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Ablikim M, Achasov MN, Ai XC, Albayrak O, Albrecht M, Ambrose DJ, Amoroso A, An FF, An Q, Bai JZ, Ferroli RB, Ban Y, Bennett DW, Bennett JV, Bertani M, Bettoni D, Bian JM, Bianchi F, Boger E, Boyko I, Briere RA, Cai H, Cai X, Cakir O, Calcaterra A, Cao GF, Cetin SA, Chang JF, Chelkov G, Chen G, Chen HS, Chen HY, Chen JC, Chen ML, Chen SJ, Chen X, Chen XR, Chen YB, Cheng HP, Chu XK, Cibinetto G, Dai HL, Dai JP, Dbeyssi A, Dedovich D, Deng ZY, Denig A, Denysenko I, Destefanis M, De Mori F, Ding Y, Dong C, Dong J, Dong LY, Dong MY, Du SX, Duan PF, Eren EE, Fan JZ, Fang J, Fang SS, Fang X, Fang Y, Fava L, Feldbauer F, Felici G, Feng CQ, Fioravanti E, Fritsch M, Fu CD, Gao Q, Gao XY, Gao Y, Gao Z, Garzia I, Geng C, Goetzen K, Gong WX, Gradl W, Greco M, Gu MH, Gu YT, Guan YH, Guo AQ, Guo LB, Guo Y, Guo YP, Haddadi Z, Hafner A, Han S, Han YL, Hao XQ, Harris FA, He KL, He ZY, Held T, Heng YK, Hou ZL, Hu C, Hu HM, Hu JF, Hu T, Hu Y, Huang GM, Huang GS, Huang HP, Huang JS, Huang XT, Huang Y, Hussain T, Ji Q, Ji QP, Ji XB, Ji XL, Jiang LL, Jiang LW, Jiang XS, Jiang XY, Jiao JB, Jiao Z, Jin DP, Jin S, Johansson T, Julin A, Kalantar-Nayestanaki N, Kang XL, Kang XS, Kavatsyuk M, Ke BC, Kiese P, Kliemt R, Kloss B, Kolcu OB, Kopf B, Kornicer M, Kühn W, Kupsc A, Lange JS, Lara M, Larin P, Leng C, Li C, Li CH, Li C, Li DM, Li F, Li G, Li HB, Li JC, Li J, Li K, Li K, Li L, Li PR, Li T, Li WD, Li WG, Li XL, Li XM, Li XN, Li XQ, Li ZB, Liang H, Liang YF, Liang YT, Liao GR, Lin DX, Liu BJ, Liu CX, Liu FH, Liu F, Liu F, Liu HB, Liu HH, Liu HH, Liu HM, Liu J, Liu JB, Liu JP, Liu JY, Liu K, Liu KY, Liu LD, Liu PL, Liu Q, Liu SB, Liu X, Liu XX, Liu YB, Liu ZA, Liu Z, Liu Z, Loehner H, Lou XC, Lu HJ, Lu JG, Lu RQ, Lu Y, Lu YP, Luo CL, Luo MX, Luo T, Luo XL, Lv M, Lyu XR, Ma FC, Ma HL, Ma LL, Ma QM, Ma T, Ma XN, Ma XY, Maas FE, Maggiora M, Mao YJ, Mao ZP, Marcello S, Messchendorp JG, Min J, Min TJ, Mitchell RE, Mo XH, Mo YJ, Morales CM, Moriya K, Muchnoi NY, Muramatsu H, Nefedov Y, Nerling F, Nikolaev IB, Ning Z, Nisar S, Niu SL, Niu XY, Olsen SL, Ouyang Q, Pacetti S, Patteri P, Pelizaeus M, Peng HP, Peters K, Pettersson J, Ping JL, Ping RG, Poling R, Prasad V, Pu YN, Qi M, Qian S, Qiao CF, Qin LQ, Qin N, Qin XS, Qin Y, Qin ZH, Qiu JF, Rashid KH, Redmer CF, Ren HL, Ripka M, Rong G, Rosner C, Ruan XD, Santoro V, Sarantsev A, Savrié M, Schoenning K, Schumann S, Shan W, Shao M, Shen CP, Shen PX, Shen XY, Sheng HY, Song WM, Song XY, Sosio S, Spataro S, Sun GX, Sun JF, Sun SS, Sun YJ, Sun YZ, Sun ZJ, Sun ZT, Tang CJ, Tang X, Tapan I, Thorndike EH, Tiemens M, Ullrich M, Uman I, Varner GS, Wang B, Wang BL, Wang D, Wang DY, Wang K, Wang LL, Wang LS, Wang M, Wang P, Wang PL, Wang SG, Wang W, Wang XF, Wang YD, Wang YF, Wang YQ, Wang Z, Wang ZG, Wang ZH, Wang ZY, Weber T, Wei DH, Wei JB, Weidenkaff P, Wen SP, Wiedner U, Wolke M, Wu LH, Wu Z, Xia LG, Xia Y, Xiao D, Xiao ZJ, Xie YG, Xiu QL, Xu GF, Xu L, Xu QJ, Xu QN, Xu XP, Yan L, Yan WB, Yan WC, Yan YH, Yang HJ, Yang HX, Yang L, Yang Y, Yang YX, Ye H, Ye M, Ye MH, Yin JH, Yu BX, Yu CX, Yu HW, Yu JS, Yuan CZ, Yuan WL, Yuan Y, Yuncu A, Zafar AA, Zallo A, Zeng Y, Zhang BX, Zhang BY, Zhang C, Zhang CC, Zhang DH, Zhang HH, Zhang HY, Zhang JJ, Zhang JL, Zhang JQ, Zhang JW, Zhang JY, Zhang JZ, Zhang K, Zhang L, Zhang SH, Zhang XY, Zhang Y, Zhang YN, Zhang YH, Zhang YT, Zhang Y, Zhang ZH, Zhang ZP, Zhang ZY, Zhao G, Zhao JW, Zhao JY, Zhao JZ, Zhao L, Zhao L, Zhao MG, Zhao Q, Zhao QW, Zhao SJ, Zhao TC, Zhao YB, Zhao ZG, Zhemchugov A, Zheng B, Zheng JP, Zheng WJ, Zheng YH, Zhong B, Zhou L, Zhou L, Zhou X, Zhou XK, Zhou XR, Zhou XY, Zhu K, Zhu KJ, Zhu S, Zhu XL, Zhu YC, Zhu YS, Zhu ZA, Zhuang J, Zotti L, Zou BS, Zou JH. Observation of Z_{c}(3900)^{0} in e^{+}e^{-}→π^{0}π^{0}J/ψ. Phys Rev Lett 2015; 115:112003. [PMID: 26406823 DOI: 10.1103/physrevlett.115.112003] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2015] [Indexed: 06/05/2023]
Abstract
Using a data sample collected with the BESIII detector operating at the BEPCII storage ring, we observe a new neutral state Z_{c}(3900)^{0} with a significance of 10.4σ. The mass and width are measured to be 3894.8±2.3±3.2 MeV/c^{2} and 29.6±8.2±8.2 MeV, respectively, where the first error is statistical and the second systematic. The Born cross section for e^{+}e^{-}→π^{0}π^{0}J/ψ and the fraction of it attributable to π^{0}Z_{c}(3900)^{0}→π^{0}π^{0}J/ψ in the range E_{c.m.}=4.19-4.42 GeV are also determined. We interpret this state as the neutral partner of the four-quark candidate Z_{c}(3900)^{±}.
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Affiliation(s)
- M Ablikim
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M N Achasov
- G.I. Budker Institute of Nuclear Physics SB RAS (BINP), Novosibirsk 630090, Russia
| | - X C Ai
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - O Albayrak
- Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
| | - M Albrecht
- Bochum Ruhr-University, D-44780 Bochum, Germany
| | - D J Ambrose
- University of Rochester, Rochester, New York 14627, USA
| | - A Amoroso
- University of Turin, I-10125, Turin, Italy
- INFN, I-10125, Turin, Italy
| | - F F An
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Q An
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - J Z Bai
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | | | - Y Ban
- Peking University, Beijing 100871, People's Republic of China
| | - D W Bennett
- Indiana University, Bloomington, Indiana 47405, USA
| | - J V Bennett
- Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
| | - M Bertani
- INFN Laboratori Nazionali di Frascati, I-00044, Frascati, Italy
| | - D Bettoni
- INFN Sezione di Ferrara, I-44122, Ferrara, Italy
| | - J M Bian
- University of Minnesota, Minneapolis, Minnesota 55455, USA
| | - F Bianchi
- University of Turin, I-10125, Turin, Italy
- INFN, I-10125, Turin, Italy
| | - E Boger
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - I Boyko
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - R A Briere
- Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
| | - H Cai
- Wuhan University, Wuhan 430072, People's Republic of China
| | - X Cai
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - O Cakir
- Istanbul Aydin University, 34295 Sefakoy, Istanbul, Turkey
| | - A Calcaterra
- INFN Laboratori Nazionali di Frascati, I-00044, Frascati, Italy
| | - G F Cao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S A Cetin
- Dogus University, 34722 Istanbul, Turkey
| | - J F Chang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - G Chelkov
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - G Chen
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - H S Chen
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - H Y Chen
- Beihang University, Beijing 100191, People's Republic of China
| | - J C Chen
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M L Chen
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S J Chen
- Nanjing University, Nanjing 210093, People's Republic of China
| | - X Chen
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X R Chen
- Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Y B Chen
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - H P Cheng
- Huangshan College, Huangshan 245000, People's Republic of China
| | - X K Chu
- Peking University, Beijing 100871, People's Republic of China
| | - G Cibinetto
- INFN Sezione di Ferrara, I-44122, Ferrara, Italy
| | - H L Dai
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J P Dai
- Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
| | - A Dbeyssi
- Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - D Dedovich
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - Z Y Deng
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - A Denig
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - I Denysenko
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - M Destefanis
- University of Turin, I-10125, Turin, Italy
- INFN, I-10125, Turin, Italy
| | - F De Mori
- University of Turin, I-10125, Turin, Italy
- INFN, I-10125, Turin, Italy
| | - Y Ding
- Liaoning University, Shenyang 110036, People's Republic of China
| | - C Dong
- Nankai University, Tianjin 300071, People's Republic of China
| | - J Dong
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L Y Dong
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M Y Dong
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S X Du
- Zhengzhou University, Zhengzhou 450001, People's Republic of China
| | - P F Duan
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - E E Eren
- Dogus University, 34722 Istanbul, Turkey
| | - J Z Fan
- Tsinghua University, Beijing 100084, People's Republic of China
| | - J Fang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S S Fang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X Fang
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Y Fang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L Fava
- University of Eastern Piedmont, I-15121, Alessandria, Italy
- INFN, I-10125, Turin, Italy
| | - F Feldbauer
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - G Felici
- INFN Laboratori Nazionali di Frascati, I-00044, Frascati, Italy
| | - C Q Feng
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - E Fioravanti
- INFN Sezione di Ferrara, I-44122, Ferrara, Italy
| | - M Fritsch
- Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - C D Fu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Q Gao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X Y Gao
- Beihang University, Beijing 100191, People's Republic of China
| | - Y Gao
- Tsinghua University, Beijing 100084, People's Republic of China
| | - Z Gao
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - I Garzia
- INFN Sezione di Ferrara, I-44122, Ferrara, Italy
| | - C Geng
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - K Goetzen
- GSI Helmholtzcentre for Heavy Ion Research GmbH, D-64291 Darmstadt, Germany
| | - W X Gong
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - W Gradl
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - M Greco
- University of Turin, I-10125, Turin, Italy
- INFN, I-10125, Turin, Italy
| | - M H Gu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y T Gu
- GuangXi University, Nanning 530004, People's Republic of China
| | - Y H Guan
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - A Q Guo
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L B Guo
- Nanjing Normal University, Nanjing 210023, People's Republic of China
| | - Y Guo
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y P Guo
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - Z Haddadi
- KVI-CART, University of Groningen, NL-9747 AA Groningen, Netherlands
| | - A Hafner
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - S Han
- Wuhan University, Wuhan 430072, People's Republic of China
| | - Y L Han
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X Q Hao
- Henan Normal University, Xinxiang 453007, People's Republic of China
| | - F A Harris
- University of Hawaii, Honolulu, Hawaii 96822, USA
| | - K L He
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z Y He
- Nankai University, Tianjin 300071, People's Republic of China
| | - T Held
- Bochum Ruhr-University, D-44780 Bochum, Germany
| | - Y K Heng
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z L Hou
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - C Hu
- Nanjing Normal University, Nanjing 210023, People's Republic of China
| | - H M Hu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J F Hu
- University of Turin, I-10125, Turin, Italy
- INFN, I-10125, Turin, Italy
| | - T Hu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y Hu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - G M Huang
- Central China Normal University, Wuhan 430079, People's Republic of China
| | - G S Huang
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - H P Huang
- Wuhan University, Wuhan 430072, People's Republic of China
| | - J S Huang
- Henan Normal University, Xinxiang 453007, People's Republic of China
| | - X T Huang
- Shandong University, Jinan 250100, People's Republic of China
| | - Y Huang
- Nanjing University, Nanjing 210093, People's Republic of China
| | - T Hussain
- University of the Punjab, Lahore-54590, Pakistan
| | - Q Ji
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Q P Ji
- Nankai University, Tianjin 300071, People's Republic of China
| | - X B Ji
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X L Ji
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L L Jiang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L W Jiang
- Wuhan University, Wuhan 430072, People's Republic of China
| | - X S Jiang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X Y Jiang
- Nankai University, Tianjin 300071, People's Republic of China
| | - J B Jiao
- Shandong University, Jinan 250100, People's Republic of China
| | - Z Jiao
- Huangshan College, Huangshan 245000, People's Republic of China
| | - D P Jin
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S Jin
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - T Johansson
- Uppsala University, Box 516, SE-75120 Uppsala, Sweden
| | - A Julin
- University of Minnesota, Minneapolis, Minnesota 55455, USA
| | | | - X L Kang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X S Kang
- Nankai University, Tianjin 300071, People's Republic of China
| | - M Kavatsyuk
- KVI-CART, University of Groningen, NL-9747 AA Groningen, Netherlands
| | - B C Ke
- Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
| | - P Kiese
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - R Kliemt
- Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - B Kloss
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - O B Kolcu
- Dogus University, 34722 Istanbul, Turkey
| | - B Kopf
- Bochum Ruhr-University, D-44780 Bochum, Germany
| | - M Kornicer
- University of Hawaii, Honolulu, Hawaii 96822, USA
| | - W Kühn
- Justus Liebig University Giessen, II. Physikalisches Institut, Heinrich-Buff-Ring 16, D-35392 Giessen, Germany
| | - A Kupsc
- Uppsala University, Box 516, SE-75120 Uppsala, Sweden
| | - J S Lange
- Justus Liebig University Giessen, II. Physikalisches Institut, Heinrich-Buff-Ring 16, D-35392 Giessen, Germany
| | - M Lara
- Indiana University, Bloomington, Indiana 47405, USA
| | - P Larin
- Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - C Leng
- INFN, I-10125, Turin, Italy
| | - C Li
- Uppsala University, Box 516, SE-75120 Uppsala, Sweden
| | - C H Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Cheng Li
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - D M Li
- Zhengzhou University, Zhengzhou 450001, People's Republic of China
| | - F Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - G Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - H B Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J C Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Jin Li
- Seoul National University, Seoul 151-747, Korea
| | - K Li
- Shandong University, Jinan 250100, People's Republic of China
| | - K Li
- Hangzhou Normal University, Hangzhou 310036, People's Republic of China
| | - Lei Li
- Beijing Institute of Petrochemical Technology, Beijing 102617, People's Republic of China
| | - P R Li
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - T Li
- Shandong University, Jinan 250100, People's Republic of China
| | - W D Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - W G Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X L Li
- Shandong University, Jinan 250100, People's Republic of China
| | - X M Li
- GuangXi University, Nanning 530004, People's Republic of China
| | - X N Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X Q Li
- Nankai University, Tianjin 300071, People's Republic of China
| | - Z B Li
- Sun Yat-Sen University, Guangzhou 510275, People's Republic of China
| | - H Liang
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Y F Liang
- Sichuan University, Chengdu 610064, People's Republic of China
| | - Y T Liang
- Justus Liebig University Giessen, II. Physikalisches Institut, Heinrich-Buff-Ring 16, D-35392 Giessen, Germany
| | - G R Liao
- Guangxi Normal University, Guilin 541004, People's Republic of China
| | - D X Lin
- Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - B J Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - C X Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - F H Liu
- Shanxi University, Taiyuan 030006, People's Republic of China
| | - Fang Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Feng Liu
- Central China Normal University, Wuhan 430079, People's Republic of China
| | - H B Liu
- GuangXi University, Nanning 530004, People's Republic of China
| | - H H Liu
- Henan University of Science and Technology, Luoyang 471003, People's Republic of China
| | - H H Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - H M Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J B Liu
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - J P Liu
- Wuhan University, Wuhan 430072, People's Republic of China
| | - J Y Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - K Liu
- Tsinghua University, Beijing 100084, People's Republic of China
| | - K Y Liu
- Liaoning University, Shenyang 110036, People's Republic of China
| | - L D Liu
- Peking University, Beijing 100871, People's Republic of China
| | - P L Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Q Liu
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - S B Liu
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - X Liu
- Lanzhou University, Lanzhou 730000, People's Republic of China
| | - X X Liu
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Y B Liu
- Nankai University, Tianjin 300071, People's Republic of China
| | - Z A Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Zhiqiang Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Zhiqing Liu
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - H Loehner
- KVI-CART, University of Groningen, NL-9747 AA Groningen, Netherlands
| | - X C Lou
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - H J Lu
- Huangshan College, Huangshan 245000, People's Republic of China
| | - J G Lu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - R Q Lu
- Hunan University, Changsha 410082, People's Republic of China
| | - Y Lu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y P Lu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - C L Luo
- Nanjing Normal University, Nanjing 210023, People's Republic of China
| | - M X Luo
- Zhejiang University, Hangzhou 310027, People's Republic of China
| | - T Luo
- University of Hawaii, Honolulu, Hawaii 96822, USA
| | - X L Luo
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M Lv
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X R Lyu
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - F C Ma
- Liaoning University, Shenyang 110036, People's Republic of China
| | - H L Ma
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L L Ma
- Shandong University, Jinan 250100, People's Republic of China
| | - Q M Ma
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - T Ma
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X N Ma
- Nankai University, Tianjin 300071, People's Republic of China
| | - X Y Ma
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - F E Maas
- Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - M Maggiora
- University of Turin, I-10125, Turin, Italy
- INFN, I-10125, Turin, Italy
| | - Y J Mao
- Peking University, Beijing 100871, People's Republic of China
| | - Z P Mao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S Marcello
- University of Turin, I-10125, Turin, Italy
- INFN, I-10125, Turin, Italy
| | - J G Messchendorp
- KVI-CART, University of Groningen, NL-9747 AA Groningen, Netherlands
| | - J Min
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - T J Min
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - R E Mitchell
- Indiana University, Bloomington, Indiana 47405, USA
| | - X H Mo
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y J Mo
- Central China Normal University, Wuhan 430079, People's Republic of China
| | - C Morales Morales
- Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - K Moriya
- Indiana University, Bloomington, Indiana 47405, USA
| | - N Yu Muchnoi
- G.I. Budker Institute of Nuclear Physics SB RAS (BINP), Novosibirsk 630090, Russia
| | - H Muramatsu
- University of Minnesota, Minneapolis, Minnesota 55455, USA
| | - Y Nefedov
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - F Nerling
- Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - I B Nikolaev
- G.I. Budker Institute of Nuclear Physics SB RAS (BINP), Novosibirsk 630090, Russia
| | - Z Ning
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S Nisar
- COMSATS Institute of Information Technology, Lahore, Defence Road, Off Raiwind Road, 54000 Lahore, Pakistan
| | - S L Niu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X Y Niu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
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- Seoul National University, Seoul 151-747, Korea
| | - Q Ouyang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S Pacetti
- INFN and University of Perugia, I-06100, Perugia, Italy
| | - P Patteri
- INFN Laboratori Nazionali di Frascati, I-00044, Frascati, Italy
| | - M Pelizaeus
- Bochum Ruhr-University, D-44780 Bochum, Germany
| | - H P Peng
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - K Peters
- GSI Helmholtzcentre for Heavy Ion Research GmbH, D-64291 Darmstadt, Germany
| | - J Pettersson
- Uppsala University, Box 516, SE-75120 Uppsala, Sweden
| | - J L Ping
- Nanjing Normal University, Nanjing 210023, People's Republic of China
| | - R G Ping
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - R Poling
- University of Minnesota, Minneapolis, Minnesota 55455, USA
| | - V Prasad
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y N Pu
- Hunan University, Changsha 410082, People's Republic of China
| | - M Qi
- Nanjing University, Nanjing 210093, People's Republic of China
| | - S Qian
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - C F Qiao
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - L Q Qin
- Shandong University, Jinan 250100, People's Republic of China
| | - N Qin
- Wuhan University, Wuhan 430072, People's Republic of China
| | - X S Qin
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y Qin
- Peking University, Beijing 100871, People's Republic of China
| | - Z H Qin
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J F Qiu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - K H Rashid
- University of the Punjab, Lahore-54590, Pakistan
| | - C F Redmer
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - H L Ren
- Hunan University, Changsha 410082, People's Republic of China
| | - M Ripka
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - G Rong
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Ch Rosner
- Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - X D Ruan
- GuangXi University, Nanning 530004, People's Republic of China
| | - V Santoro
- INFN Sezione di Ferrara, I-44122, Ferrara, Italy
| | - A Sarantsev
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - M Savrié
- University of Ferrara, I-44122, Ferrara, Italy
| | - K Schoenning
- Uppsala University, Box 516, SE-75120 Uppsala, Sweden
| | - S Schumann
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - W Shan
- Peking University, Beijing 100871, People's Republic of China
| | - M Shao
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - C P Shen
- Beihang University, Beijing 100191, People's Republic of China
| | - P X Shen
- Nankai University, Tianjin 300071, People's Republic of China
| | - X Y Shen
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - H Y Sheng
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - W M Song
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X Y Song
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S Sosio
- University of Turin, I-10125, Turin, Italy
- INFN, I-10125, Turin, Italy
| | - S Spataro
- University of Turin, I-10125, Turin, Italy
- INFN, I-10125, Turin, Italy
| | - G X Sun
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J F Sun
- Henan Normal University, Xinxiang 453007, People's Republic of China
| | - S S Sun
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y J Sun
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Y Z Sun
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z J Sun
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z T Sun
- Indiana University, Bloomington, Indiana 47405, USA
| | - C J Tang
- Sichuan University, Chengdu 610064, People's Republic of China
| | - X Tang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - I Tapan
- Uludag University, 16059 Bursa, Turkey
| | - E H Thorndike
- University of Rochester, Rochester, New York 14627, USA
| | - M Tiemens
- KVI-CART, University of Groningen, NL-9747 AA Groningen, Netherlands
| | - M Ullrich
- Justus Liebig University Giessen, II. Physikalisches Institut, Heinrich-Buff-Ring 16, D-35392 Giessen, Germany
| | - I Uman
- Dogus University, 34722 Istanbul, Turkey
| | - G S Varner
- University of Hawaii, Honolulu, Hawaii 96822, USA
| | - B Wang
- Nankai University, Tianjin 300071, People's Republic of China
| | - B L Wang
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - D Wang
- Peking University, Beijing 100871, People's Republic of China
| | - D Y Wang
- Peking University, Beijing 100871, People's Republic of China
| | - K Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L L Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L S Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M Wang
- Shandong University, Jinan 250100, People's Republic of China
| | - P Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - P L Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S G Wang
- Peking University, Beijing 100871, People's Republic of China
| | - W Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X F Wang
- Tsinghua University, Beijing 100084, People's Republic of China
| | - Y D Wang
- Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - Y F Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y Q Wang
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - Z Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z G Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
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- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Z Y Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - T Weber
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - D H Wei
- Guangxi Normal University, Guilin 541004, People's Republic of China
| | - J B Wei
- Peking University, Beijing 100871, People's Republic of China
| | - P Weidenkaff
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - S P Wen
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - U Wiedner
- Bochum Ruhr-University, D-44780 Bochum, Germany
| | - M Wolke
- Uppsala University, Box 516, SE-75120 Uppsala, Sweden
| | - L H Wu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z Wu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L G Xia
- Tsinghua University, Beijing 100084, People's Republic of China
| | - Y Xia
- Hunan University, Changsha 410082, People's Republic of China
| | - D Xiao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z J Xiao
- Nanjing Normal University, Nanjing 210023, People's Republic of China
| | - Y G Xie
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Q L Xiu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - G F Xu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L Xu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Q J Xu
- Hangzhou Normal University, Hangzhou 310036, People's Republic of China
| | - Q N Xu
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - X P Xu
- Soochow University, Suzhou 215006, People's Republic of China
| | - L Yan
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - W B Yan
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - W C Yan
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Y H Yan
- Hunan University, Changsha 410082, People's Republic of China
| | - H J Yang
- Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
| | - H X Yang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L Yang
- Wuhan University, Wuhan 430072, People's Republic of China
| | - Y Yang
- Central China Normal University, Wuhan 430079, People's Republic of China
| | - Y X Yang
- Guangxi Normal University, Guilin 541004, People's Republic of China
| | - H Ye
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M Ye
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M H Ye
- China Center of Advanced Science and Technology, Beijing 100190, People's Republic of China
| | - J H Yin
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - B X Yu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - C X Yu
- Nankai University, Tianjin 300071, People's Republic of China
| | - H W Yu
- Peking University, Beijing 100871, People's Republic of China
| | - J S Yu
- Lanzhou University, Lanzhou 730000, People's Republic of China
| | - C Z Yuan
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - W L Yuan
- Nanjing University, Nanjing 210093, People's Republic of China
| | - Y Yuan
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - A Yuncu
- Dogus University, 34722 Istanbul, Turkey
| | - A A Zafar
- University of the Punjab, Lahore-54590, Pakistan
| | - A Zallo
- INFN Laboratori Nazionali di Frascati, I-00044, Frascati, Italy
| | - Y Zeng
- Hunan University, Changsha 410082, People's Republic of China
| | - B X Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - B Y Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - C Zhang
- Nanjing University, Nanjing 210093, People's Republic of China
| | - C C Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - D H Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - H H Zhang
- Sun Yat-Sen University, Guangzhou 510275, People's Republic of China
| | - H Y Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J J Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J L Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J Q Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J W Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J Y Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J Z Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - K Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S H Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X Y Zhang
- Shandong University, Jinan 250100, People's Republic of China
| | - Y Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y N Zhang
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Y H Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y T Zhang
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Yu Zhang
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Z H Zhang
- Central China Normal University, Wuhan 430079, People's Republic of China
| | - Z P Zhang
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Z Y Zhang
- Wuhan University, Wuhan 430072, People's Republic of China
| | - G Zhao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J W Zhao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J Y Zhao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J Z Zhao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Lei Zhao
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Ling Zhao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M G Zhao
- Nankai University, Tianjin 300071, People's Republic of China
| | - Q Zhao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Q W Zhao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S J Zhao
- Zhengzhou University, Zhengzhou 450001, People's Republic of China
| | - T C Zhao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y B Zhao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z G Zhao
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - A Zhemchugov
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - B Zheng
- University of South China, Hengyang 421001, People's Republic of China
| | - J P Zheng
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - W J Zheng
- Shandong University, Jinan 250100, People's Republic of China
| | - Y H Zheng
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - B Zhong
- Nanjing Normal University, Nanjing 210023, People's Republic of China
| | - L Zhou
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Li Zhou
- Nankai University, Tianjin 300071, People's Republic of China
| | - X Zhou
- Wuhan University, Wuhan 430072, People's Republic of China
| | - X K Zhou
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - X R Zhou
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - X Y Zhou
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - K Zhu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - K J Zhu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S Zhu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X L Zhu
- Tsinghua University, Beijing 100084, People's Republic of China
| | - Y C Zhu
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Y S Zhu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z A Zhu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J Zhuang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L Zotti
- University of Turin, I-10125, Turin, Italy
- INFN, I-10125, Turin, Italy
| | - B S Zou
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J H Zou
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
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Ablikim M, Achasov MN, Ai XC, Albayrak O, Albrecht M, Ambrose DJ, Amoroso A, An FF, An Q, Bai JZ, Ferroli RB, Ban Y, Bennett DW, Bennett JV, Bertani M, Bettoni D, Bian JM, Bianchi F, Boger E, Boyko I, Briere RA, Cai H, Cai X, Cakir O, Calcaterra A, Cao GF, Cetin SA, Chang JF, Chelkov G, Chen G, Chen HS, Chen HY, Chen JC, Chen ML, Chen SJ, Chen X, Chen XR, Chen YB, Cheng HP, Chu XK, Cibinetto G, Dai HL, Dai JP, Dbeyssi A, Dedovich D, Deng ZY, Denig A, Denysenko I, Destefanis M, De Mori F, Ding Y, Dong C, Dong J, Dong LY, Dong MY, Du SX, Duan PF, Eren EE, Fan JZ, Fang J, Fang SS, Fang X, Fang Y, Fava L, Feldbauer F, Felici G, Feng CQ, Fioravanti E, Fritsch M, Fu CD, Gao Q, Gao XY, Gao Y, Gao Z, Garzia I, Geng C, Goetzen K, Gong WX, Gradl W, Greco M, Gu MH, Gu YT, Guan YH, Guo AQ, Guo LB, Guo Y, Guo YP, Haddadi Z, Hafner A, Han S, Han YL, Hao XQ, Harris FA, He KL, He ZY, Held T, Heng YK, Hou ZL, Hu C, Hu HM, Hu JF, Hu T, Hu Y, Huang GM, Huang GS, Huang HP, Huang JS, Huang XT, Huang Y, Hussain T, Ji Q, Ji QP, Ji XB, Ji XL, Jiang LL, Jiang LW, Jiang XS, Jiang XY, Jiao JB, Jiao Z, Jin DP, Jin S, Johansson T, Julin A, Kalantar-Nayestanaki N, Kang XL, Kang XS, Kavatsyuk M, Ke BC, Kiese P, Kliemt R, Kloss B, Kolcu OB, Kopf B, Kornicer M, Kühn W, Kupsc A, Lange JS, Lara M, Larin P, Leng C, Li C, Li CH, Li C, Li DM, Li F, Li G, Li HB, Li JC, Li J, Li K, Li K, Li L, Li PR, Li T, Li WD, Li WG, Li XL, Li XM, Li XN, Li XQ, Li ZB, Liang H, Liang YF, Liang YT, Liao GR, Lin DX, Liu BJ, Liu CX, Liu FH, Liu F, Liu F, Liu HB, Liu HH, Liu HH, Liu HM, Liu J, Liu JB, Liu JP, Liu JY, Liu K, Liu K, Liu KY, Liu LD, Liu PL, Liu Q, Liu SB, Liu X, Liu XX, Liu YB, Liu ZA, Liu Z, Liu Z, Loehner H, Lou XC, Lu HJ, Lu JG, Lu RQ, Lu Y, Lu YP, Luo CL, Luo MX, Luo T, Luo XL, Lv M, Lyu XR, Ma FC, Ma HL, Ma LL, Ma QM, Ma T, Ma XN, Ma XY, Maas FE, Maggiora M, Mao YJ, Mao ZP, Marcello S, Messchendorp JG, Min J, Min TJ, Mitchell RE, Mo XH, Mo YJ, Morales CM, Moriya K, Muchnoi NY, Muramatsu H, Nefedov Y, Nerling F, Nikolaev IB, Ning Z, Nisar S, Niu SL, Niu XY, Olsen SL, Ouyang Q, Pacetti S, Patteri P, Pelizaeus M, Peng HP, Peters K, Pettersson J, Ping JL, Ping RG, Poling R, Prasad V, Pu YN, Qi M, Qian S, Qiao CF, Qin LQ, Qin N, Qin XS, Qin Y, Qin ZH, Qiu JF, Rashid KH, Redmer CF, Ren HL, Ripka M, Rong G, Rosner C, Ruan XD, Santoro V, Sarantsev A, Savrié M, Schoenning K, Schumann S, Shan W, Shao M, Shen CP, Shen PX, Shen XY, Sheng HY, Song WM, Song XY, Sosio S, Spataro S, Sun GX, Sun JF, Sun SS, Sun YJ, Sun YZ, Sun ZJ, Sun ZT, Tang CJ, Tang X, Tapan I, Thorndike EH, Tiemens M, Ullrich M, Uman I, Varner GS, Wang B, Wang BL, Wang D, Wang DY, Wang K, Wang LL, Wang LS, Wang M, Wang P, Wang PL, Wang SG, Wang W, Wang XF, Wang YD, Wang YF, Wang YQ, Wang Z, Wang ZG, Wang ZH, Wang ZY, Weber T, Wei DH, Wei JB, Weidenkaff P, Wen SP, Wiedner U, Wolke M, Wu LH, Wu Z, Xia LG, Xia Y, Xiao D, Xiao ZJ, Xie YG, Xiu QL, Xu GF, Xu L, Xu QJ, Xu QN, Xu XP, Yan L, Yan WB, Yan WC, Yan YH, Yang HJ, Yang HX, Yang L, Yang Y, Yang YX, Ye H, Ye M, Ye MH, Yin JH, Yu BX, Yu CX, Yu HW, Yu JS, Yuan CZ, Yuan WL, Yuan Y, Yuncu A, Zafar AA, Zallo A, Zeng Y, Zhang BX, Zhang BY, Zhang C, Zhang CC, Zhang DH, Zhang HH, Zhang HY, Zhang JJ, Zhang JL, Zhang JQ, Zhang JW, Zhang JY, Zhang JZ, Zhang K, Zhang L, Zhang SH, Zhang XY, Zhang Y, Zhang YN, Zhang YH, Zhang YT, Zhang Y, Zhang ZH, Zhang ZP, Zhang ZY, Zhao G, Zhao JW, Zhao JY, Zhao JZ, Zhao L, Zhao L, Zhao MG, Zhao Q, Zhao QW, Zhao SJ, Zhao TC, Zhao YB, Zhao ZG, Zhemchugov A, Zheng B, Zheng JP, Zheng WJ, Zheng YH, Zhong B, Zhou L, Zhou L, Zhou X, Zhou XK, Zhou XR, Zhou XY, Zhu K, Zhu KJ, Zhu S, Zhu XL, Zhu YC, Zhu YS, Zhu ZA, Zhuang J, Zotti L, Zou BS, Zou JH. Observation and Spin-Parity Determination of the X(1835) in J/ψ→γK_{S}^{0}K_{S}^{0}η. Phys Rev Lett 2015; 115:091803. [PMID: 26371642 DOI: 10.1103/physrevlett.115.091803] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2015] [Indexed: 06/05/2023]
Abstract
We report an observation of the process J/ψ→γX(1835)→γK_{S}^{0}K_{S}^{0}η at low K_{S}^{0}K_{S}^{0} mass with a statistical significance larger than 12.9σ using a data sample of 1.31×10^{9} J/ψ events collected with the BESIII detector. In this region of phase space the K_{S}^{0}K_{S}^{0} system is dominantly produced through the f_{0}(980). By performing a partial wave analysis, we determine the spin parity of the X(1835) to be J^{PC}=0^{-+}. The mass and width of the observed X(1835) are 1844±9(stat)_{-25}^{+16}(syst) MeV/c^{2} and 192_{-17}^{+20}(stat)_{-43}^{+62}(syst) MeV, respectively, which are consistent with the results obtained by BESIII in the channel J/ψ→γπ^{+}π^{-}η^{'}.
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Affiliation(s)
- M Ablikim
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M N Achasov
- G.I. Budker Institute of Nuclear Physics SB RAS (BINP), Novosibirsk 630090, Russia
| | - X C Ai
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - O Albayrak
- Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
| | - M Albrecht
- Bochum Ruhr-University, D-44780 Bochum, Germany
| | - D J Ambrose
- University of Rochester, Rochester, New York 14627, USA
| | - A Amoroso
- University of Turin, I-10125 Turin, Italy
- INFN, I-10125 Turin, Italy
| | - F F An
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Q An
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - J Z Bai
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | | | - Y Ban
- Peking University, Beijing 100871, People's Republic of China
| | - D W Bennett
- Indiana University, Bloomington, Indiana 47405, USA
| | - J V Bennett
- Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
| | - M Bertani
- INFN Laboratori Nazionali di Frascati, I-00044 Frascati, Italy
| | - D Bettoni
- INFN Sezione di Ferrara, I-44122 Ferrara, Italy
| | - J M Bian
- University of Minnesota, Minneapolis, Minnesota 55455, USA
| | - F Bianchi
- University of Turin, I-10125 Turin, Italy
- INFN, I-10125 Turin, Italy
| | - E Boger
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - I Boyko
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - R A Briere
- Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
| | - H Cai
- Wuhan University, Wuhan 430072, People's Republic of China
| | - X Cai
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - O Cakir
- Istanbul Aydin University, 34295 Sefakoy, Istanbul, Turkey
| | - A Calcaterra
- INFN Laboratori Nazionali di Frascati, I-00044 Frascati, Italy
| | - G F Cao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S A Cetin
- Dogus University, 34722 Istanbul, Turkey
| | - J F Chang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - G Chelkov
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - G Chen
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - H S Chen
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - H Y Chen
- Beihang University, Beijing 100191, People's Republic of China
| | - J C Chen
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M L Chen
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S J Chen
- Nanjing University, Nanjing 210093, People's Republic of China
| | - X Chen
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X R Chen
- Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Y B Chen
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - H P Cheng
- Huangshan College, Huangshan 245000, People's Republic of China
| | - X K Chu
- Peking University, Beijing 100871, People's Republic of China
| | - G Cibinetto
- INFN Sezione di Ferrara, I-44122 Ferrara, Italy
| | - H L Dai
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J P Dai
- Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
| | - A Dbeyssi
- Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - D Dedovich
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - Z Y Deng
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - A Denig
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - I Denysenko
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - M Destefanis
- University of Turin, I-10125 Turin, Italy
- INFN, I-10125 Turin, Italy
| | - F De Mori
- University of Turin, I-10125 Turin, Italy
- INFN, I-10125 Turin, Italy
| | - Y Ding
- Liaoning University, Shenyang 110036, People's Republic of China
| | - C Dong
- Nankai University, Tianjin 300071, People's Republic of China
| | - J Dong
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L Y Dong
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M Y Dong
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S X Du
- Zhengzhou University, Zhengzhou 450001, People's Republic of China
| | - P F Duan
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - E E Eren
- Dogus University, 34722 Istanbul, Turkey
| | - J Z Fan
- Tsinghua University, Beijing 100084, People's Republic of China
| | - J Fang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S S Fang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X Fang
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Y Fang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L Fava
- University of Eastern Piedmont, I-15121 Alessandria, Italy
- INFN, I-10125 Turin, Italy
| | - F Feldbauer
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - G Felici
- INFN Laboratori Nazionali di Frascati, I-00044 Frascati, Italy
| | - C Q Feng
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | | | - M Fritsch
- Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - C D Fu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Q Gao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X Y Gao
- Beihang University, Beijing 100191, People's Republic of China
| | - Y Gao
- Tsinghua University, Beijing 100084, People's Republic of China
| | - Z Gao
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - I Garzia
- INFN Sezione di Ferrara, I-44122 Ferrara, Italy
| | - C Geng
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - K Goetzen
- GSI Helmholtzcentre for Heavy Ion Research GmbH, D-64291 Darmstadt, Germany
| | - W X Gong
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - W Gradl
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - M Greco
- University of Turin, I-10125 Turin, Italy
- INFN, I-10125 Turin, Italy
| | - M H Gu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y T Gu
- GuangXi University, Nanning 530004, People's Republic of China
| | - Y H Guan
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - A Q Guo
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L B Guo
- Nanjing Normal University, Nanjing 210023, People's Republic of China
| | - Y Guo
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y P Guo
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - Z Haddadi
- KVI-CART, University of Groningen, NL-9747 AA Groningen, Netherlands
| | - A Hafner
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - S Han
- Wuhan University, Wuhan 430072, People's Republic of China
| | - Y L Han
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X Q Hao
- Henan Normal University, Xinxiang 453007, People's Republic of China
| | - F A Harris
- University of Hawaii, Honolulu, Hawaii 96822, USA
| | - K L He
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z Y He
- Nankai University, Tianjin 300071, People's Republic of China
| | - T Held
- Bochum Ruhr-University, D-44780 Bochum, Germany
| | - Y K Heng
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z L Hou
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - C Hu
- Nanjing Normal University, Nanjing 210023, People's Republic of China
| | - H M Hu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J F Hu
- University of Turin, I-10125 Turin, Italy
- INFN, I-10125 Turin, Italy
| | - T Hu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y Hu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - G M Huang
- Central China Normal University, Wuhan 430079, People's Republic of China
| | - G S Huang
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - H P Huang
- Wuhan University, Wuhan 430072, People's Republic of China
| | - J S Huang
- Henan Normal University, Xinxiang 453007, People's Republic of China
| | - X T Huang
- Shandong University, Jinan 250100, People's Republic of China
| | - Y Huang
- Nanjing University, Nanjing 210093, People's Republic of China
| | - T Hussain
- University of the Punjab, Lahore 54590, Pakistan
| | - Q Ji
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Q P Ji
- Nankai University, Tianjin 300071, People's Republic of China
| | - X B Ji
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X L Ji
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L L Jiang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L W Jiang
- Wuhan University, Wuhan 430072, People's Republic of China
| | - X S Jiang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X Y Jiang
- Nankai University, Tianjin 300071, People's Republic of China
| | - J B Jiao
- Shandong University, Jinan 250100, People's Republic of China
| | - Z Jiao
- Huangshan College, Huangshan 245000, People's Republic of China
| | - D P Jin
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S Jin
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - T Johansson
- Uppsala University, Box 516, SE-75120 Uppsala, Sweden
| | - A Julin
- University of Minnesota, Minneapolis, Minnesota 55455, USA
| | | | - X L Kang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X S Kang
- Nankai University, Tianjin 300071, People's Republic of China
| | - M Kavatsyuk
- KVI-CART, University of Groningen, NL-9747 AA Groningen, Netherlands
| | - B C Ke
- Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
| | - P Kiese
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - R Kliemt
- Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - B Kloss
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - O B Kolcu
- Dogus University, 34722 Istanbul, Turkey
| | - B Kopf
- Bochum Ruhr-University, D-44780 Bochum, Germany
| | - M Kornicer
- University of Hawaii, Honolulu, Hawaii 96822, USA
| | - W Kühn
- Justus Liebig University Giessen, II. Physikalisches Institut, Heinrich-Buff-Ring 16, D-35392 Giessen, Germany
| | - A Kupsc
- Uppsala University, Box 516, SE-75120 Uppsala, Sweden
| | - J S Lange
- Justus Liebig University Giessen, II. Physikalisches Institut, Heinrich-Buff-Ring 16, D-35392 Giessen, Germany
| | - M Lara
- Indiana University, Bloomington, Indiana 47405, USA
| | - P Larin
- Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - C Leng
- INFN, I-10125 Turin, Italy
| | - C Li
- Uppsala University, Box 516, SE-75120 Uppsala, Sweden
| | - C H Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Cheng Li
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - D M Li
- Zhengzhou University, Zhengzhou 450001, People's Republic of China
| | - F Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - G Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - H B Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J C Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Jin Li
- Seoul National University, Seoul 151-747, Korea
| | - K Li
- Hangzhou Normal University, Hangzhou 310036, People's Republic of China
| | - K Li
- Shandong University, Jinan 250100, People's Republic of China
| | - Lei Li
- Beijing Institute of Petrochemical Technology, Beijing 102617, People's Republic of China
| | - P R Li
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - T Li
- Shandong University, Jinan 250100, People's Republic of China
| | - W D Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - W G Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X L Li
- Shandong University, Jinan 250100, People's Republic of China
| | - X M Li
- GuangXi University, Nanning 530004, People's Republic of China
| | - X N Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X Q Li
- Nankai University, Tianjin 300071, People's Republic of China
| | - Z B Li
- Sun Yat-Sen University, Guangzhou 510275, People's Republic of China
| | - H Liang
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Y F Liang
- Sichuan University, Chengdu 610064, People's Republic of China
| | - Y T Liang
- Justus Liebig University Giessen, II. Physikalisches Institut, Heinrich-Buff-Ring 16, D-35392 Giessen, Germany
| | - G R Liao
- Guangxi Normal University, Guilin 541004, People's Republic of China
| | - D X Lin
- Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - B J Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - C X Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - F H Liu
- Shanxi University, Taiyuan 030006, People's Republic of China
| | - Fang Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Feng Liu
- Central China Normal University, Wuhan 430079, People's Republic of China
| | - H B Liu
- GuangXi University, Nanning 530004, People's Republic of China
| | - H H Liu
- Henan University of Science and Technology, Luoyang 471003, People's Republic of China
| | - H H Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - H M Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J B Liu
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - J P Liu
- Wuhan University, Wuhan 430072, People's Republic of China
| | - J Y Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - K Liu
- Peking University, Beijing 100871, People's Republic of China
| | - K Liu
- Tsinghua University, Beijing 100084, People's Republic of China
| | - K Y Liu
- Liaoning University, Shenyang 110036, People's Republic of China
| | - L D Liu
- Peking University, Beijing 100871, People's Republic of China
| | - P L Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Q Liu
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - S B Liu
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - X Liu
- Lanzhou University, Lanzhou 730000, People's Republic of China
| | - X X Liu
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Y B Liu
- Nankai University, Tianjin 300071, People's Republic of China
| | - Z A Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Zhiqiang Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Zhiqing Liu
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - H Loehner
- KVI-CART, University of Groningen, NL-9747 AA Groningen, Netherlands
| | - X C Lou
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - H J Lu
- Huangshan College, Huangshan 245000, People's Republic of China
| | - J G Lu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - R Q Lu
- Hunan University, Changsha 410082, People's Republic of China
| | - Y Lu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y P Lu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - C L Luo
- Nanjing Normal University, Nanjing 210023, People's Republic of China
| | - M X Luo
- Zhejiang University, Hangzhou 310027, People's Republic of China
| | - T Luo
- University of Hawaii, Honolulu, Hawaii 96822, USA
| | - X L Luo
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M Lv
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X R Lyu
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - F C Ma
- Liaoning University, Shenyang 110036, People's Republic of China
| | - H L Ma
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L L Ma
- Shandong University, Jinan 250100, People's Republic of China
| | - Q M Ma
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - T Ma
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X N Ma
- Nankai University, Tianjin 300071, People's Republic of China
| | - X Y Ma
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - F E Maas
- Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - M Maggiora
- University of Turin, I-10125 Turin, Italy
- INFN, I-10125 Turin, Italy
| | - Y J Mao
- Peking University, Beijing 100871, People's Republic of China
| | - Z P Mao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S Marcello
- University of Turin, I-10125 Turin, Italy
- INFN, I-10125 Turin, Italy
| | - J G Messchendorp
- KVI-CART, University of Groningen, NL-9747 AA Groningen, Netherlands
| | - J Min
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - T J Min
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - R E Mitchell
- Indiana University, Bloomington, Indiana 47405, USA
| | - X H Mo
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y J Mo
- Central China Normal University, Wuhan 430079, People's Republic of China
| | - C Morales Morales
- Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - K Moriya
- Indiana University, Bloomington, Indiana 47405, USA
| | - N Yu Muchnoi
- G.I. Budker Institute of Nuclear Physics SB RAS (BINP), Novosibirsk 630090, Russia
| | - H Muramatsu
- University of Minnesota, Minneapolis, Minnesota 55455, USA
| | - Y Nefedov
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - F Nerling
- Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - I B Nikolaev
- G.I. Budker Institute of Nuclear Physics SB RAS (BINP), Novosibirsk 630090, Russia
| | - Z Ning
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S Nisar
- COMSATS Institute of Information Technology, Lahore, Defence Road, Off Raiwind Road, 54000 Lahore, Pakistan
| | - S L Niu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X Y Niu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S L Olsen
- Seoul National University, Seoul 151-747, Korea
| | - Q Ouyang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S Pacetti
- INFN and University of Perugia, I-06100 Perugia, Italy
| | - P Patteri
- INFN Laboratori Nazionali di Frascati, I-00044 Frascati, Italy
| | - M Pelizaeus
- Bochum Ruhr-University, D-44780 Bochum, Germany
| | - H P Peng
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - K Peters
- GSI Helmholtzcentre for Heavy Ion Research GmbH, D-64291 Darmstadt, Germany
| | - J Pettersson
- Uppsala University, Box 516, SE-75120 Uppsala, Sweden
| | - J L Ping
- Nanjing Normal University, Nanjing 210023, People's Republic of China
| | - R G Ping
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - R Poling
- University of Minnesota, Minneapolis, Minnesota 55455, USA
| | - V Prasad
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y N Pu
- Hunan University, Changsha 410082, People's Republic of China
| | - M Qi
- Nanjing University, Nanjing 210093, People's Republic of China
| | - S Qian
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - C F Qiao
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - L Q Qin
- Shandong University, Jinan 250100, People's Republic of China
| | - N Qin
- Wuhan University, Wuhan 430072, People's Republic of China
| | - X S Qin
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y Qin
- Peking University, Beijing 100871, People's Republic of China
| | - Z H Qin
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J F Qiu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - K H Rashid
- University of the Punjab, Lahore 54590, Pakistan
| | - C F Redmer
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - H L Ren
- Hunan University, Changsha 410082, People's Republic of China
| | - M Ripka
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - G Rong
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Ch Rosner
- Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - X D Ruan
- GuangXi University, Nanning 530004, People's Republic of China
| | - V Santoro
- INFN Sezione di Ferrara, I-44122 Ferrara, Italy
| | - A Sarantsev
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - M Savrié
- University of Ferrara, I-44122 Ferrara, Italy
| | - K Schoenning
- Uppsala University, Box 516, SE-75120 Uppsala, Sweden
| | - S Schumann
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - W Shan
- Peking University, Beijing 100871, People's Republic of China
| | - M Shao
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - C P Shen
- Beihang University, Beijing 100191, People's Republic of China
| | - P X Shen
- Nankai University, Tianjin 300071, People's Republic of China
| | - X Y Shen
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - H Y Sheng
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - W M Song
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X Y Song
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S Sosio
- University of Turin, I-10125 Turin, Italy
- INFN, I-10125 Turin, Italy
| | - S Spataro
- University of Turin, I-10125 Turin, Italy
- INFN, I-10125 Turin, Italy
| | - G X Sun
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J F Sun
- Henan Normal University, Xinxiang 453007, People's Republic of China
| | - S S Sun
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y J Sun
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Y Z Sun
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z J Sun
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z T Sun
- Indiana University, Bloomington, Indiana 47405, USA
| | - C J Tang
- Sichuan University, Chengdu 610064, People's Republic of China
| | - X Tang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - I Tapan
- Uludag University, 16059 Bursa, Turkey
| | - E H Thorndike
- University of Rochester, Rochester, New York 14627, USA
| | - M Tiemens
- KVI-CART, University of Groningen, NL-9747 AA Groningen, Netherlands
| | - M Ullrich
- Justus Liebig University Giessen, II. Physikalisches Institut, Heinrich-Buff-Ring 16, D-35392 Giessen, Germany
| | - I Uman
- Dogus University, 34722 Istanbul, Turkey
| | - G S Varner
- University of Hawaii, Honolulu, Hawaii 96822, USA
| | - B Wang
- Nankai University, Tianjin 300071, People's Republic of China
| | - B L Wang
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - D Wang
- Peking University, Beijing 100871, People's Republic of China
| | - D Y Wang
- Peking University, Beijing 100871, People's Republic of China
| | - K Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L L Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L S Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M Wang
- Shandong University, Jinan 250100, People's Republic of China
| | - P Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - P L Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S G Wang
- Peking University, Beijing 100871, People's Republic of China
| | - W Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X F Wang
- Tsinghua University, Beijing 100084, People's Republic of China
| | - Y D Wang
- Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - Y F Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y Q Wang
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - Z Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z G Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z H Wang
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Z Y Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - T Weber
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - D H Wei
- Guangxi Normal University, Guilin 541004, People's Republic of China
| | - J B Wei
- Peking University, Beijing 100871, People's Republic of China
| | - P Weidenkaff
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - S P Wen
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - U Wiedner
- Bochum Ruhr-University, D-44780 Bochum, Germany
| | - M Wolke
- Uppsala University, Box 516, SE-75120 Uppsala, Sweden
| | - L H Wu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z Wu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L G Xia
- Tsinghua University, Beijing 100084, People's Republic of China
| | - Y Xia
- Hunan University, Changsha 410082, People's Republic of China
| | - D Xiao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z J Xiao
- Nanjing Normal University, Nanjing 210023, People's Republic of China
| | - Y G Xie
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Q L Xiu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - G F Xu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L Xu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Q J Xu
- Hangzhou Normal University, Hangzhou 310036, People's Republic of China
| | - Q N Xu
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - X P Xu
- Soochow University, Suzhou 215006, People's Republic of China
| | - L Yan
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - W B Yan
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - W C Yan
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Y H Yan
- Hunan University, Changsha 410082, People's Republic of China
| | - H J Yang
- Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
| | - H X Yang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L Yang
- Wuhan University, Wuhan 430072, People's Republic of China
| | - Y Yang
- Central China Normal University, Wuhan 430079, People's Republic of China
| | - Y X Yang
- Guangxi Normal University, Guilin 541004, People's Republic of China
| | - H Ye
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M Ye
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M H Ye
- China Center of Advanced Science and Technology, Beijing 100190, People's Republic of China
| | - J H Yin
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - B X Yu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - C X Yu
- Nankai University, Tianjin 300071, People's Republic of China
| | - H W Yu
- Peking University, Beijing 100871, People's Republic of China
| | - J S Yu
- Lanzhou University, Lanzhou 730000, People's Republic of China
| | - C Z Yuan
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - W L Yuan
- Nanjing University, Nanjing 210093, People's Republic of China
| | - Y Yuan
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - A Yuncu
- Dogus University, 34722 Istanbul, Turkey
| | - A A Zafar
- University of the Punjab, Lahore 54590, Pakistan
| | - A Zallo
- INFN Laboratori Nazionali di Frascati, I-00044 Frascati, Italy
| | - Y Zeng
- Hunan University, Changsha 410082, People's Republic of China
| | - B X Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - B Y Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - C Zhang
- Nanjing University, Nanjing 210093, People's Republic of China
| | - C C Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - D H Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - H H Zhang
- Sun Yat-Sen University, Guangzhou 510275, People's Republic of China
| | - H Y Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J J Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J L Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J Q Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J W Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J Y Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J Z Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - K Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S H Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X Y Zhang
- Shandong University, Jinan 250100, People's Republic of China
| | - Y Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y N Zhang
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Y H Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y T Zhang
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Yu Zhang
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Z H Zhang
- Central China Normal University, Wuhan 430079, People's Republic of China
| | - Z P Zhang
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Z Y Zhang
- Wuhan University, Wuhan 430072, People's Republic of China
| | - G Zhao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J W Zhao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J Y Zhao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J Z Zhao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Lei Zhao
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Ling Zhao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M G Zhao
- Nankai University, Tianjin 300071, People's Republic of China
| | - Q Zhao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Q W Zhao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S J Zhao
- Zhengzhou University, Zhengzhou 450001, People's Republic of China
| | - T C Zhao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y B Zhao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z G Zhao
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - A Zhemchugov
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - B Zheng
- University of South China, Hengyang 421001, People's Republic of China
| | - J P Zheng
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - W J Zheng
- Shandong University, Jinan 250100, People's Republic of China
| | - Y H Zheng
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - B Zhong
- Nanjing Normal University, Nanjing 210023, People's Republic of China
| | - L Zhou
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Li Zhou
- Nankai University, Tianjin 300071, People's Republic of China
| | - X Zhou
- Wuhan University, Wuhan 430072, People's Republic of China
| | - X K Zhou
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - X R Zhou
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - X Y Zhou
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - K Zhu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - K J Zhu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S Zhu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X L Zhu
- Tsinghua University, Beijing 100084, People's Republic of China
| | - Y C Zhu
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Y S Zhu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z A Zhu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J Zhuang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L Zotti
- University of Turin, I-10125 Turin, Italy
- INFN, I-10125 Turin, Italy
| | - B S Zou
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J H Zou
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
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Ablikim M, Achasov MN, Ai XC, Albayrak O, Albrecht M, Ambrose DJ, Amoroso A, An FF, An Q, Bai JZ, Baldini Ferroli R, Ban Y, Bennett DW, Bennett JV, Bertani M, Bettoni D, Bian JM, Bianchi F, Boger E, Bondarenko O, Boyko I, Briere RA, Cai H, Cai X, Cakir O, Calcaterra A, Cao GF, Cetin SA, Chang JF, Chelkov G, Chen G, Chen HS, Chen HY, Chen JC, Chen ML, Chen SJ, Chen X, Chen XR, Chen YB, Cheng HP, Chu XK, Cibinetto G, Cronin-Hennessy D, Dai HL, Dai JP, Dbeyssi A, Dedovich D, Deng ZY, Denig A, Denysenko I, Destefanis M, De Mori F, Ding Y, Dong C, Dong J, Dong LY, Dong MY, Du SX, Duan PF, Fan JZ, Fang J, Fang SS, Fang X, Fang Y, Fava L, Feldbauer F, Felici G, Feng CQ, Fioravanti E, Fritsch M, Fu CD, Gao Q, Gao Y, Gao Z, Garzia I, Geng C, Goetzen K, Gong WX, Gradl W, Greco M, Gu MH, Gu YT, Guan YH, Guo AQ, Guo LB, Guo Y, Guo YP, Haddadi Z, Hafner A, Han S, Han YL, Hao XQ, Harris FA, He KL, He ZY, Held T, Heng YK, Hou ZL, Hu C, Hu HM, Hu JF, Hu T, Hu Y, Huang GM, Huang GS, Huang HP, Huang JS, Huang XT, Huang Y, Hussain T, Ji Q, Ji QP, Ji XB, Ji XL, Jiang LL, Jiang LW, Jiang XS, Jiao JB, Jiao Z, Jin DP, Jin S, Johansson T, Julin A, Kalantar-Nayestanaki N, Kang XL, Kang XS, Kavatsyuk M, Ke BC, Kliemt R, Kloss B, Kolcu OB, Kopf B, Kornicer M, Kuehn W, Kupsc A, Lai W, Lange JS, Lara M, Larin P, Leng C, Li CH, Li C, Li DM, Li F, Li G, Li HB, Li JC, Li J, Li K, Li K, Li L, Li PR, Li T, Li WD, Li WG, Li XL, Li XM, Li XN, Li XQ, Li ZB, Liang H, Liang YF, Liang YT, Liao GR, Lin DX, Liu BJ, Liu CX, Liu FH, Liu F, Liu F, Liu HB, Liu HH, Liu HH, Liu HM, Liu J, Liu JP, Liu JY, Liu K, Liu KY, Liu LD, Liu PL, Liu Q, Liu SB, Liu X, Liu XX, Liu YB, Liu ZA, Liu Z, Liu Z, Loehner H, Lou XC, Lu HJ, Lu JG, Lu RQ, Lu Y, Lu YP, Luo CL, Luo MX, Luo T, Luo XL, Lv M, Lyu XR, Ma FC, Ma HL, Ma LL, Ma QM, Ma S, Ma T, Ma XN, Ma XY, Maas FE, Maggiora M, Malik QA, Mao YJ, Mao ZP, Marcello S, Messchendorp JG, Min J, Min TJ, Mitchell RE, Mo XH, Mo YJ, Morales Morales C, Moriya K, Muchnoi NY, Muramatsu H, Nefedov Y, Nerling F, Nikolaev IB, Ning Z, Nisar S, Niu SL, Niu XY, Olsen SL, Ouyang Q, Pacetti S, Patteri P, Pelizaeus M, Peng HP, Peters K, Pettersson J, Ping JL, Ping RG, Poling R, Pu YN, Qi M, Qian S, Qiao CF, Qin LQ, Qin N, Qin XS, Qin Y, Qin ZH, Qiu JF, Rashid KH, Redmer CF, Ren HL, Ripka M, Rong G, Ruan XD, Santoro V, Sarantsev A, Savrié M, Schoenning K, Schumann S, Shan W, Shao M, Shen CP, Shen PX, Shen XY, Sheng HY, Song WM, Song XY, Sosio S, Spataro S, Sun GX, Sun JF, Sun SS, Sun YJ, Sun YZ, Sun ZJ, Sun ZT, Tang CJ, Tang X, Tapan I, Thorndike EH, Tiemens M, Toth D, Ullrich M, Uman I, Varner GS, Wang B, Wang BL, Wang D, Wang DY, Wang K, Wang LL, Wang LS, Wang M, Wang P, Wang PL, Wang QJ, Wang SG, Wang W, Wang XF, Wang YD, Wang YF, Wang YQ, Wang Z, Wang ZG, Wang ZH, Wang ZY, Weber T, Wei DH, Wei JB, Weidenkaff P, Wen SP, Wiedner U, Wolke M, Wu LH, Wu Z, Xia LG, Xia Y, Xiao D, Xiao ZJ, Xie YG, Xiu QL, Xu GF, Xu L, Xu QJ, Xu QN, Xu XP, Yan L, Yan WB, Yan WC, Yan YH, Yang HX, Yang L, Yang Y, Yang YX, Ye H, Ye M, Ye MH, Yin JH, Yu BX, Yu CX, Yu HW, Yu JS, Yuan CZ, Yuan WL, Yuan Y, Yuncu A, Zafar AA, Zallo A, Zeng Y, Zhang BX, Zhang BY, Zhang C, Zhang CC, Zhang DH, Zhang HH, Zhang HY, Zhang JJ, Zhang JL, Zhang JQ, Zhang JW, Zhang JY, Zhang JZ, Zhang K, Zhang L, Zhang SH, Zhang XY, Zhang Y, Zhang YH, Zhang YT, Zhang ZH, Zhang ZP, Zhang ZY, Zhao G, Zhao JW, Zhao JY, Zhao JZ, Zhao L, Zhao L, Zhao MG, Zhao Q, Zhao QW, Zhao SJ, Zhao TC, Zhao YB, Zhao ZG, Zhemchugov A, Zheng B, Zheng JP, Zheng WJ, Zheng YH, Zhong B, Zhou L, Zhou L, Zhou X, Zhou XK, Zhou XR, Zhou XY, Zhu K, Zhu KJ, Zhu S, Zhu XL, Zhu YC, Zhu YS, Zhu ZA, Zhuang J, Zotti L, Zou BS, Zou JH. Observation of the ψ(1 3D2) State in e+e-→π+π-γχc1 at BESIII. Phys Rev Lett 2015; 115:011803. [PMID: 26182091 DOI: 10.1103/physrevlett.115.011803] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2015] [Indexed: 06/04/2023]
Abstract
We report the observation of the X(3823) state in the process e+e-→π+π-X(3823)→π+π-γχc1 with a statistical significance of 6.2σ, in data samples at center-of-mass energies sqrt[s]=4.230, 4.260, 4.360, 4.420, and 4.600 GeV collected with the BESIII detector at the BEPCII electron positron collider. The measured mass of the X(3823) state is (3821.7±1.3±0.7) MeV/c2, where the first error is statistical and the second systematic, and the width is less than 16 MeV at the 90% confidence level. The products of the Born cross sections for e+e-→π+π-X(3823) and the branching ratio B[X(3823)→γχc1,c2] are also measured. These measurements are in good agreement with the assignment of the X(3823) state as the ψ(1 3D2) charmonium state.
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Affiliation(s)
- M Ablikim
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M N Achasov
- G.I. Budker Institute of Nuclear Physics SB RAS (BINP), Novosibirsk 630090, Russia
| | - X C Ai
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - O Albayrak
- Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
| | - M Albrecht
- Bochum Ruhr-University, D-44780 Bochum, Germany
| | - D J Ambrose
- University of Rochester, Rochester, New York 14627, USA
| | - A Amoroso
- University of Turin, I-10125 Turin, Italy
- INFN, I-10125 Turin, Italy
| | - F F An
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Q An
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - J Z Bai
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | | | - Y Ban
- Peking University, Beijing 100871, People's Republic of China
| | - D W Bennett
- Indiana University, Bloomington, Indiana 47405, USA
| | - J V Bennett
- Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
| | - M Bertani
- INFN Laboratori Nazionali di Frascati, I-00044 Frascati, Italy
| | - D Bettoni
- INFN Sezione di Ferrara, I-44122 Ferrara, Italy
| | - J M Bian
- University of Minnesota, Minneapolis, Minnesota 55455, USA
| | - F Bianchi
- University of Turin, I-10125 Turin, Italy
- INFN, I-10125 Turin, Italy
| | - E Boger
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - O Bondarenko
- KVI-CART, University of Groningen, NL-9747 AA Groningen, Netherlands
| | - I Boyko
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - R A Briere
- Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
| | - H Cai
- Wuhan University, Wuhan 430072, People's Republic of China
| | - X Cai
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - O Cakir
- Istanbul Aydin University, 34295 Sefakoy, Istanbul, Turkey
| | - A Calcaterra
- INFN Laboratori Nazionali di Frascati, I-00044 Frascati, Italy
| | - G F Cao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S A Cetin
- Dogus University, 34722 Istanbul, Turkey
| | - J F Chang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - G Chelkov
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - G Chen
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - H S Chen
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - H Y Chen
- Beihang University, Beijing 100191, People's Republic of China
| | - J C Chen
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M L Chen
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S J Chen
- Nanjing University, Nanjing 210093, People's Republic of China
| | - X Chen
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X R Chen
- Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Y B Chen
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - H P Cheng
- Huangshan College, Huangshan 245000, People's Republic of China
| | - X K Chu
- Peking University, Beijing 100871, People's Republic of China
| | - G Cibinetto
- INFN Sezione di Ferrara, I-44122 Ferrara, Italy
| | | | - H L Dai
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J P Dai
- Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
| | - A Dbeyssi
- Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - D Dedovich
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - Z Y Deng
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - A Denig
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - I Denysenko
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - M Destefanis
- University of Turin, I-10125 Turin, Italy
- INFN, I-10125 Turin, Italy
| | - F De Mori
- University of Turin, I-10125 Turin, Italy
- INFN, I-10125 Turin, Italy
| | - Y Ding
- Liaoning University, Shenyang 110036, People's Republic of China
| | - C Dong
- Nankai University, Tianjin 300071, People's Republic of China
| | - J Dong
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L Y Dong
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M Y Dong
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S X Du
- Zhengzhou University, Zhengzhou 450001, People's Republic of China
| | - P F Duan
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J Z Fan
- Tsinghua University, Beijing 100084, People's Republic of China
| | - J Fang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S S Fang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X Fang
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Y Fang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L Fava
- University of Eastern Piedmont, I-15121 Alessandria, Italy
- INFN, I-10125 Turin, Italy
| | - F Feldbauer
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - G Felici
- INFN Laboratori Nazionali di Frascati, I-00044 Frascati, Italy
| | - C Q Feng
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | | | - M Fritsch
- Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - C D Fu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Q Gao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y Gao
- Tsinghua University, Beijing 100084, People's Republic of China
| | - Z Gao
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - I Garzia
- INFN Sezione di Ferrara, I-44122 Ferrara, Italy
| | - C Geng
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - K Goetzen
- GSI Helmholtzcentre for Heavy Ion Research GmbH, D-64291 Darmstadt, Germany
| | - W X Gong
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - W Gradl
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - M Greco
- University of Turin, I-10125 Turin, Italy
- INFN, I-10125 Turin, Italy
| | - M H Gu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y T Gu
- GuangXi University, Nanning 530004, People's Republic of China
| | - Y H Guan
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - A Q Guo
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L B Guo
- Nanjing Normal University, Nanjing 210023, People's Republic of China
| | - Y Guo
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y P Guo
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - Z Haddadi
- KVI-CART, University of Groningen, NL-9747 AA Groningen, Netherlands
| | - A Hafner
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - S Han
- Wuhan University, Wuhan 430072, People's Republic of China
| | - Y L Han
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X Q Hao
- Henan Normal University, Xinxiang 453007, People's Republic of China
| | - F A Harris
- University of Hawaii, Honolulu, Hawaii 96822, USA
| | - K L He
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z Y He
- Nankai University, Tianjin 300071, People's Republic of China
| | - T Held
- Bochum Ruhr-University, D-44780 Bochum, Germany
| | - Y K Heng
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z L Hou
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - C Hu
- Nanjing Normal University, Nanjing 210023, People's Republic of China
| | - H M Hu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J F Hu
- University of Turin, I-10125 Turin, Italy
- INFN, I-10125 Turin, Italy
| | - T Hu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y Hu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - G M Huang
- Central China Normal University, Wuhan 430079, People's Republic of China
| | - G S Huang
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - H P Huang
- Wuhan University, Wuhan 430072, People's Republic of China
| | - J S Huang
- Henan Normal University, Xinxiang 453007, People's Republic of China
| | - X T Huang
- Shandong University, Jinan 250100, People's Republic of China
| | - Y Huang
- Nanjing University, Nanjing 210093, People's Republic of China
| | - T Hussain
- University of the Punjab, Lahore-54590, Pakistan
| | - Q Ji
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Q P Ji
- Nankai University, Tianjin 300071, People's Republic of China
| | - X B Ji
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X L Ji
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L L Jiang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L W Jiang
- Wuhan University, Wuhan 430072, People's Republic of China
| | - X S Jiang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J B Jiao
- Shandong University, Jinan 250100, People's Republic of China
| | - Z Jiao
- Huangshan College, Huangshan 245000, People's Republic of China
| | - D P Jin
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S Jin
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - T Johansson
- Uppsala University, Box 516, SE-75120 Uppsala, Sweden
| | - A Julin
- University of Minnesota, Minneapolis, Minnesota 55455, USA
| | | | - X L Kang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X S Kang
- Nankai University, Tianjin 300071, People's Republic of China
| | - M Kavatsyuk
- KVI-CART, University of Groningen, NL-9747 AA Groningen, Netherlands
| | - B C Ke
- Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
| | - R Kliemt
- Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - B Kloss
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - O B Kolcu
- Dogus University, 34722 Istanbul, Turkey
| | - B Kopf
- Bochum Ruhr-University, D-44780 Bochum, Germany
| | - M Kornicer
- University of Hawaii, Honolulu, Hawaii 96822, USA
| | - W Kuehn
- Justus Liebig University Giessen, II. Physikalisches Institut, Heinrich-Buff-Ring 16, D-35392 Giessen, Germany
| | - A Kupsc
- Uppsala University, Box 516, SE-75120 Uppsala, Sweden
| | - W Lai
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J S Lange
- Justus Liebig University Giessen, II. Physikalisches Institut, Heinrich-Buff-Ring 16, D-35392 Giessen, Germany
| | - M Lara
- Indiana University, Bloomington, Indiana 47405, USA
| | - P Larin
- Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - C Leng
- INFN, I-10125 Turin, Italy
| | - C H Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Cheng Li
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - D M Li
- Zhengzhou University, Zhengzhou 450001, People's Republic of China
| | - F Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - G Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - H B Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J C Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Jin Li
- Seoul National University, Seoul, 151-747 Korea
| | - K Li
- Hangzhou Normal University, Hangzhou 310036, People's Republic of China
| | - K Li
- Shandong University, Jinan 250100, People's Republic of China
| | - Lei Li
- Beijing Institute of Petrochemical Technology, Beijing 102617, People's Republic of China
| | - P R Li
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - T Li
- Shandong University, Jinan 250100, People's Republic of China
| | - W D Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - W G Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X L Li
- Shandong University, Jinan 250100, People's Republic of China
| | - X M Li
- GuangXi University, Nanning 530004, People's Republic of China
| | - X N Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X Q Li
- Nankai University, Tianjin 300071, People's Republic of China
| | - Z B Li
- Sun Yat-Sen University, Guangzhou 510275, People's Republic of China
| | - H Liang
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Y F Liang
- Sichuan University, Chengdu 610064, People's Republic of China
| | - Y T Liang
- Justus Liebig University Giessen, II. Physikalisches Institut, Heinrich-Buff-Ring 16, D-35392 Giessen, Germany
| | - G R Liao
- Guangxi Normal University, Guilin 541004, People's Republic of China
| | - D X Lin
- Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - B J Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - C X Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - F H Liu
- Shanxi University, Taiyuan 030006, People's Republic of China
| | - Fang Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Feng Liu
- Central China Normal University, Wuhan 430079, People's Republic of China
| | - H B Liu
- GuangXi University, Nanning 530004, People's Republic of China
| | - H H Liu
- Henan University of Science and Technology, Luoyang 471003, People's Republic of China
| | - H H Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - H M Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J P Liu
- Wuhan University, Wuhan 430072, People's Republic of China
| | - J Y Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - K Liu
- Tsinghua University, Beijing 100084, People's Republic of China
| | - K Y Liu
- Liaoning University, Shenyang 110036, People's Republic of China
| | - L D Liu
- Peking University, Beijing 100871, People's Republic of China
| | - P L Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Q Liu
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - S B Liu
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - X Liu
- Lanzhou University, Lanzhou 730000, People's Republic of China
| | - X X Liu
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Y B Liu
- Nankai University, Tianjin 300071, People's Republic of China
| | - Z A Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Zhiqiang Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Zhiqing Liu
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - H Loehner
- KVI-CART, University of Groningen, NL-9747 AA Groningen, Netherlands
| | - X C Lou
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - H J Lu
- Huangshan College, Huangshan 245000, People's Republic of China
| | - J G Lu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - R Q Lu
- Hunan University, Changsha 410082, People's Republic of China
| | - Y Lu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y P Lu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - C L Luo
- Nanjing Normal University, Nanjing 210023, People's Republic of China
| | - M X Luo
- Zhejiang University, Hangzhou 310027, People's Republic of China
| | - T Luo
- University of Hawaii, Honolulu, Hawaii 96822, USA
| | - X L Luo
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M Lv
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X R Lyu
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - F C Ma
- Liaoning University, Shenyang 110036, People's Republic of China
| | - H L Ma
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L L Ma
- Shandong University, Jinan 250100, People's Republic of China
| | - Q M Ma
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S Ma
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - T Ma
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X N Ma
- Nankai University, Tianjin 300071, People's Republic of China
| | - X Y Ma
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - F E Maas
- Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - M Maggiora
- University of Turin, I-10125 Turin, Italy
- INFN, I-10125 Turin, Italy
| | - Q A Malik
- University of the Punjab, Lahore-54590, Pakistan
| | - Y J Mao
- Peking University, Beijing 100871, People's Republic of China
| | - Z P Mao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S Marcello
- University of Turin, I-10125 Turin, Italy
- INFN, I-10125 Turin, Italy
| | - J G Messchendorp
- KVI-CART, University of Groningen, NL-9747 AA Groningen, Netherlands
| | - J Min
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - T J Min
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - R E Mitchell
- Indiana University, Bloomington, Indiana 47405, USA
| | - X H Mo
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y J Mo
- Central China Normal University, Wuhan 430079, People's Republic of China
| | - C Morales Morales
- Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - K Moriya
- Indiana University, Bloomington, Indiana 47405, USA
| | - N Yu Muchnoi
- G.I. Budker Institute of Nuclear Physics SB RAS (BINP), Novosibirsk 630090, Russia
| | - H Muramatsu
- University of Minnesota, Minneapolis, Minnesota 55455, USA
| | - Y Nefedov
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - F Nerling
- Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - I B Nikolaev
- G.I. Budker Institute of Nuclear Physics SB RAS (BINP), Novosibirsk 630090, Russia
| | - Z Ning
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S Nisar
- COMSATS Institute of Information Technology, Lahore, Defence Road, Off Raiwind Road, 54000 Lahore, Pakistan
| | - S L Niu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X Y Niu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S L Olsen
- Seoul National University, Seoul, 151-747 Korea
| | - Q Ouyang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S Pacetti
- INFN and University of Perugia, I-06100 Perugia, Italy
| | - P Patteri
- INFN Laboratori Nazionali di Frascati, I-00044 Frascati, Italy
| | - M Pelizaeus
- Bochum Ruhr-University, D-44780 Bochum, Germany
| | - H P Peng
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - K Peters
- GSI Helmholtzcentre for Heavy Ion Research GmbH, D-64291 Darmstadt, Germany
| | - J Pettersson
- Uppsala University, Box 516, SE-75120 Uppsala, Sweden
| | - J L Ping
- Nanjing Normal University, Nanjing 210023, People's Republic of China
| | - R G Ping
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - R Poling
- University of Minnesota, Minneapolis, Minnesota 55455, USA
| | - Y N Pu
- Hunan University, Changsha 410082, People's Republic of China
| | - M Qi
- Nanjing University, Nanjing 210093, People's Republic of China
| | - S Qian
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - C F Qiao
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - L Q Qin
- Shandong University, Jinan 250100, People's Republic of China
| | - N Qin
- Wuhan University, Wuhan 430072, People's Republic of China
| | - X S Qin
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y Qin
- Peking University, Beijing 100871, People's Republic of China
| | - Z H Qin
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J F Qiu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - K H Rashid
- University of the Punjab, Lahore-54590, Pakistan
| | - C F Redmer
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - H L Ren
- Hunan University, Changsha 410082, People's Republic of China
| | - M Ripka
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - G Rong
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X D Ruan
- GuangXi University, Nanning 530004, People's Republic of China
| | - V Santoro
- INFN Sezione di Ferrara, I-44122 Ferrara, Italy
| | - A Sarantsev
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - M Savrié
- University of Ferrara, I-44122 Ferrara, Italy
| | - K Schoenning
- Uppsala University, Box 516, SE-75120 Uppsala, Sweden
| | - S Schumann
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - W Shan
- Peking University, Beijing 100871, People's Republic of China
| | - M Shao
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - C P Shen
- Beihang University, Beijing 100191, People's Republic of China
| | - P X Shen
- Nankai University, Tianjin 300071, People's Republic of China
| | - X Y Shen
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - H Y Sheng
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - W M Song
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X Y Song
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S Sosio
- University of Turin, I-10125 Turin, Italy
- INFN, I-10125 Turin, Italy
| | - S Spataro
- University of Turin, I-10125 Turin, Italy
- INFN, I-10125 Turin, Italy
| | - G X Sun
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J F Sun
- Henan Normal University, Xinxiang 453007, People's Republic of China
| | - S S Sun
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y J Sun
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Y Z Sun
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z J Sun
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z T Sun
- Indiana University, Bloomington, Indiana 47405, USA
| | - C J Tang
- Sichuan University, Chengdu 610064, People's Republic of China
| | - X Tang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - I Tapan
- Uludag University, 16059 Bursa, Turkey
| | - E H Thorndike
- University of Rochester, Rochester, New York 14627, USA
| | - M Tiemens
- KVI-CART, University of Groningen, NL-9747 AA Groningen, Netherlands
| | - D Toth
- University of Minnesota, Minneapolis, Minnesota 55455, USA
| | - M Ullrich
- Justus Liebig University Giessen, II. Physikalisches Institut, Heinrich-Buff-Ring 16, D-35392 Giessen, Germany
| | - I Uman
- Dogus University, 34722 Istanbul, Turkey
| | - G S Varner
- University of Hawaii, Honolulu, Hawaii 96822, USA
| | - B Wang
- Nankai University, Tianjin 300071, People's Republic of China
| | - B L Wang
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - D Wang
- Peking University, Beijing 100871, People's Republic of China
| | - D Y Wang
- Peking University, Beijing 100871, People's Republic of China
| | - K Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L L Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L S Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M Wang
- Shandong University, Jinan 250100, People's Republic of China
| | - P Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - P L Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Q J Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S G Wang
- Peking University, Beijing 100871, People's Republic of China
| | - W Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X F Wang
- Tsinghua University, Beijing 100084, People's Republic of China
| | - Y D Wang
- INFN Laboratori Nazionali di Frascati, I-00044 Frascati, Italy
| | - Y F Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y Q Wang
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - Z Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z G Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z H Wang
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Z Y Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - T Weber
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - D H Wei
- Guangxi Normal University, Guilin 541004, People's Republic of China
| | - J B Wei
- Peking University, Beijing 100871, People's Republic of China
| | - P Weidenkaff
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - S P Wen
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - U Wiedner
- Bochum Ruhr-University, D-44780 Bochum, Germany
| | - M Wolke
- Uppsala University, Box 516, SE-75120 Uppsala, Sweden
| | - L H Wu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z Wu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L G Xia
- Tsinghua University, Beijing 100084, People's Republic of China
| | - Y Xia
- Hunan University, Changsha 410082, People's Republic of China
| | - D Xiao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z J Xiao
- Nanjing Normal University, Nanjing 210023, People's Republic of China
| | - Y G Xie
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Q L Xiu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - G F Xu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L Xu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Q J Xu
- Hangzhou Normal University, Hangzhou 310036, People's Republic of China
| | - Q N Xu
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - X P Xu
- Soochow University, Suzhou 215006, People's Republic of China
| | - L Yan
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - W B Yan
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - W C Yan
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Y H Yan
- Hunan University, Changsha 410082, People's Republic of China
| | - H X Yang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L Yang
- Wuhan University, Wuhan 430072, People's Republic of China
| | - Y Yang
- Central China Normal University, Wuhan 430079, People's Republic of China
| | - Y X Yang
- Guangxi Normal University, Guilin 541004, People's Republic of China
| | - H Ye
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M Ye
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M H Ye
- China Center of Advanced Science and Technology, Beijing 100190, People's Republic of China
| | - J H Yin
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - B X Yu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - C X Yu
- Nankai University, Tianjin 300071, People's Republic of China
| | - H W Yu
- Peking University, Beijing 100871, People's Republic of China
| | - J S Yu
- Lanzhou University, Lanzhou 730000, People's Republic of China
| | - C Z Yuan
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - W L Yuan
- Nanjing University, Nanjing 210093, People's Republic of China
| | - Y Yuan
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - A Yuncu
- Dogus University, 34722 Istanbul, Turkey
| | - A A Zafar
- University of the Punjab, Lahore-54590, Pakistan
| | - A Zallo
- INFN Laboratori Nazionali di Frascati, I-00044 Frascati, Italy
| | - Y Zeng
- Hunan University, Changsha 410082, People's Republic of China
| | - B X Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - B Y Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - C Zhang
- Nanjing University, Nanjing 210093, People's Republic of China
| | - C C Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - D H Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - H H Zhang
- Sun Yat-Sen University, Guangzhou 510275, People's Republic of China
| | - H Y Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J J Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J L Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J Q Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J W Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J Y Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J Z Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - K Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S H Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X Y Zhang
- Shandong University, Jinan 250100, People's Republic of China
| | - Y Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y H Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y T Zhang
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Z H Zhang
- Central China Normal University, Wuhan 430079, People's Republic of China
| | - Z P Zhang
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Z Y Zhang
- Wuhan University, Wuhan 430072, People's Republic of China
| | - G Zhao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J W Zhao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J Y Zhao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J Z Zhao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Lei Zhao
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Ling Zhao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M G Zhao
- Nankai University, Tianjin 300071, People's Republic of China
| | - Q Zhao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Q W Zhao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S J Zhao
- Zhengzhou University, Zhengzhou 450001, People's Republic of China
| | - T C Zhao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y B Zhao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z G Zhao
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - A Zhemchugov
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - B Zheng
- University of South China, Hengyang 421001, People's Republic of China
| | - J P Zheng
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - W J Zheng
- Shandong University, Jinan 250100, People's Republic of China
| | - Y H Zheng
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - B Zhong
- Nanjing Normal University, Nanjing 210023, People's Republic of China
| | - L Zhou
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Li Zhou
- Nankai University, Tianjin 300071, People's Republic of China
| | - X Zhou
- Wuhan University, Wuhan 430072, People's Republic of China
| | - X K Zhou
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - X R Zhou
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - X Y Zhou
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - K Zhu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - K J Zhu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S Zhu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X L Zhu
- Tsinghua University, Beijing 100084, People's Republic of China
| | - Y C Zhu
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Y S Zhu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z A Zhu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J Zhuang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L Zotti
- University of Turin, I-10125 Turin, Italy
- INFN, I-10125 Turin, Italy
| | - B S Zou
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J H Zou
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
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Ablikim M, Achasov MN, Ai XC, Albayrak O, Albrecht M, Ambrose DJ, Amoroso A, An FF, An Q, Bai JZ, Ferroli RB, Ban Y, Bennett DW, Bennett JV, Bertani M, Bettoni D, Bian JM, Bianchi F, Boger E, Bondarenko O, Boyko I, Briere RA, Cai H, Cai X, Cakir O, Calcaterra A, Cao GF, Cetin SA, Chang JF, Chelkov G, Chen G, Chen HS, Chen HY, Chen JC, Chen ML, Chen SJ, Chen X, Chen XR, Chen YB, Cheng HP, Chu XK, Chu YP, Cibinetto G, Cronin-Hennessy D, Dai HL, Dai JP, Dedovich D, Deng ZY, Denig A, Denysenko I, Destefanis M, De Mori F, Ding Y, Dong C, Dong J, Dong LY, Dong MY, Du SX, Duan PF, Fan JZ, Fang J, Fang SS, Fang X, Fang Y, Fava L, Feldbauer F, Felici G, Feng CQ, Fioravanti E, Fu CD, Gao Q, Gao Y, Garzia I, Goetzen K, Gong WX, Gradl W, Greco M, Gu MH, Gu YT, Guan YH, Guo AQ, Guo LB, Guo T, Guo Y, Guo YP, Haddadi Z, Hafner A, Han S, Han YL, Harris FA, He KL, He ZY, Held T, Heng YK, Hou ZL, Hu C, Hu HM, Hu JF, Hu T, Hu Y, Huang GM, Huang GS, Huang HP, Huang JS, Huang XT, Huang Y, Hussain T, Ji Q, Ji QP, Ji XB, Ji XL, Jiang LL, Jiang LW, Jiang XS, Jiao JB, Jiao Z, Jin DP, Jin S, Johansson T, Julin A, Kalantar-Nayestanaki N, Kang XL, Kang XS, Kavatsyuk M, Ke BC, Kliemt R, Kloss B, Kolcu OB, Kopf B, Kornicer M, Kuehn W, Kupsc A, Lai W, Lange JS, Lara M, Larin P, Li C, Li CH, Li DM, Li F, Li G, Li HB, Li JC, Li J, Li K, Li K, Li PR, Li T, Li WD, Li WG, Li XL, Li XM, Li XN, Li XQ, Li ZB, Liang H, Liang YF, Liang YT, Liao GR, Lin DX, Liu BJ, Liu CL, Liu CX, Liu FH, Liu F, Liu F, Liu HB, Liu HH, Liu HH, Liu HM, Liu J, Liu JP, Liu JY, Liu K, Liu KY, Liu LD, Liu Q, Liu SB, Liu X, Liu XX, Liu YB, Liu ZA, Liu Z, Liu Z, Loehner H, Lou XC, Lu HJ, Lu JG, Lu RQ, Lu Y, Lu YP, Luo CL, Luo MX, Luo T, Luo XL, Lv M, Lyu XR, Ma FC, Ma HL, Ma LL, Ma QM, Ma S, Ma T, Ma XN, Ma XY, Maas FE, Maggiora M, Malik QA, Mao YJ, Mao ZP, Marcello S, Messchendorp JG, Min J, Min TJ, Mitchell RE, Mo XH, Mo YJ, Moeini H, Morales CM, Moriya K, Muchnoi NY, Muramatsu H, Nefedov Y, Nerling F, Nikolaev IB, Ning Z, Nisar S, Niu SL, Niu XY, Olsen SL, Ouyang Q, Pacetti S, Patteri P, Pelizaeus M, Peng HP, Peters K, Ping JL, Ping RG, Poling R, Pu YN, Qi M, Qian S, Qiao CF, Qin LQ, Qin N, Qin XS, Qin Y, Qin ZH, Qiu JF, Rashid KH, Redmer CF, Ren HL, Ripka M, Rong G, Ruan XD, Santoro V, Sarantsev A, Savrié M, Schoenning K, Schumann S, Shan W, Shao M, Shen CP, Shen PX, Shen XY, Sheng HY, Shepherd MR, Song WM, Song XY, Sosio S, Spataro S, Spruck B, Sun GX, Sun JF, Sun SS, Sun YJ, Sun YZ, Sun ZJ, Sun ZT, Tang CJ, Tang X, Tapan I, Thorndike EH, Tiemens M, Toth D, Ullrich M, Uman I, Varner GS, Wang B, Wang BL, Wang D, Wang DY, Wang K, Wang LL, Wang LS, Wang M, Wang P, Wang PL, Wang QJ, Wang SG, Wang W, Wang XF, Wang YD, Wang YF, Wang YQ, Wang Z, Wang ZG, Wang ZH, Wang ZY, Wei DH, Wei JB, Weidenkaff P, Wen SP, Wiedner U, Wolke M, Wu LH, Wu Z, Xia LG, Xia Y, Xiao D, Xiao ZJ, Xie YG, Xiu QL, Xu GF, Xu L, Xu QJ, Xu QN, Xu XP, Yan L, Yan WB, Yan WC, Yan YH, Yang HX, Yang L, Yang Y, Yang YX, Ye H, Ye M, Ye MH, Yin JH, Yu BX, Yu CX, Yu HW, Yu JS, Yuan CZ, Yuan WL, Yuan Y, Yuncu A, Zafar AA, Zallo A, Zeng Y, Zhang BX, Zhang BY, Zhang C, Zhang CC, Zhang DH, Zhang HH, Zhang HY, Zhang JJ, Zhang JL, Zhang JQ, Zhang JW, Zhang JY, Zhang JZ, Zhang K, Zhang L, Zhang SH, Zhang XJ, Zhang XY, Zhang Y, Zhang YH, Zhang ZH, Zhang ZP, Zhang ZY, Zhao G, Zhao JW, Zhao JY, Zhao JZ, Zhao L, Zhao L, Zhao MG, Zhao Q, Zhao QW, Zhao SJ, Zhao TC, Zhao YB, Zhao ZG, Zhemchugov A, Zheng B, Zheng JP, Zheng WJ, Zheng YH, Zhong B, Zhou L, Zhou L, Zhou X, Zhou XK, Zhou XR, Zhou XY, Zhu K, Zhu KJ, Zhu S, Zhu XL, Zhu YC, Zhu YS, Zhu ZA, Zhuang J, Zou BS, Zou JH. Study of e(+)e(-)→ωχ(cJ) at center of mass energies from 4.21 to 4.42 GeV. Phys Rev Lett 2015; 114:092003. [PMID: 25793804 DOI: 10.1103/physrevlett.114.092003] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2014] [Indexed: 06/04/2023]
Abstract
Based on data samples collected with the BESIII detector at the BEPCII collider at nine center of mass energies from 4.21 to 4.42 GeV, we search for the production of e^{+}e^{-}→ωχ_{cJ} (J=0, 1, 2). The process e^{+}e^{-}→ωχ_{c0} is observed for the first time, and the Born cross sections at sqrt[s]=4.23 and 4.26 GeV are measured to be (55.4±6.0±5.9) and (23.7±5.3±3.5) pb, respectively, where the first uncertainties are statistical and the second are systematic. The ωχ_{c0} signals at the other seven energies and the e^{+}e^{-}→ωχ_{c1} and ωχ_{c2} signals are not significant, and the upper limits on the cross sections are determined. By examining the ωχ_{c0} cross section as a function of center of mass energy, we find that it is inconsistent with the line shape of the Y(4260) observed in e^{+}e^{-}→π^{+}π^{-}J/ψ. Assuming the ωχ_{c0} signals come from a single resonance, we extract the mass and width of the resonance to be (4230±8±6) MeV/c^{2} and (38±12±2) MeV, respectively, and the statistical significance is more than 9σ.
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Affiliation(s)
- M Ablikim
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M N Achasov
- G. I. Budker Institute of Nuclear Physics SB RAS (BINP), Novosibirsk 630090, Russia
| | - X C Ai
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - O Albayrak
- Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
| | - M Albrecht
- Bochum Ruhr-University, D-44780 Bochum, Germany
| | - D J Ambrose
- University of Rochester, Rochester, New York 14627, USA
| | - A Amoroso
- University of Turin, I-10125 Turin, Italy
- INFN, I-10125 Turin, Italy
| | - F F An
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Q An
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - J Z Bai
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | | | - Y Ban
- Peking University, Beijing 100871, People's Republic of China
| | - D W Bennett
- Indiana University, Bloomington, Indiana 47405, USA
| | - J V Bennett
- Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
| | - M Bertani
- INFN Laboratori Nazionali di Frascati, I-00044, Frascati, Italy
| | - D Bettoni
- INFN Sezione di Ferrara, I-44122 Ferrara, Italy
| | - J M Bian
- University of Minnesota, Minneapolis, Minnesota 55455, USA
| | - F Bianchi
- University of Turin, I-10125 Turin, Italy
- INFN, I-10125 Turin, Italy
| | - E Boger
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow Region, Russia
| | - O Bondarenko
- KVI-CART, University of Groningen, NL-9747 AA Groningen, The Netherlands
| | - I Boyko
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow Region, Russia
| | - R A Briere
- Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
| | - H Cai
- Wuhan University, Wuhan 430072, People's Republic of China
| | - X Cai
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - O Cakir
- Ankara University, Dogol Caddesi, 06100 Tandogan, Ankara, Turkey
| | - A Calcaterra
- INFN Laboratori Nazionali di Frascati, I-00044, Frascati, Italy
| | - G F Cao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S A Cetin
- Dogus University, 34722 Istanbul, Turkey
| | - J F Chang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - G Chelkov
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow Region, Russia
| | - G Chen
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - H S Chen
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - H Y Chen
- Beihang University, Beijing 100191, People's Republic of China
| | - J C Chen
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M L Chen
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S J Chen
- Nanjing University, Nanjing 210093, People's Republic of China
| | - X Chen
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X R Chen
- Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Y B Chen
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - H P Cheng
- Huangshan College, Huangshan 245000, People's Republic of China
| | - X K Chu
- Peking University, Beijing 100871, People's Republic of China
| | - Y P Chu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - G Cibinetto
- INFN Sezione di Ferrara, I-44122 Ferrara, Italy
| | | | - H L Dai
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J P Dai
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - D Dedovich
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow Region, Russia
| | - Z Y Deng
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - A Denig
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - I Denysenko
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow Region, Russia
| | - M Destefanis
- University of Turin, I-10125 Turin, Italy
- INFN, I-10125 Turin, Italy
| | - F De Mori
- University of Turin, I-10125 Turin, Italy
- INFN, I-10125 Turin, Italy
| | - Y Ding
- Liaoning University, Shenyang 110036, People's Republic of China
| | - C Dong
- Nankai University, Tianjin 300071, People's Republic of China
| | - J Dong
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L Y Dong
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M Y Dong
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S X Du
- Zhengzhou University, Zhengzhou 450001, People's Republic of China
| | - P F Duan
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J Z Fan
- Tsinghua University, Beijing 100084, People's Republic of China
| | - J Fang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S S Fang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X Fang
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Y Fang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L Fava
- University of Eastern Piedmont, I-15121 Alessandria, Italy
- INFN, I-10125 Turin, Italy
| | - F Feldbauer
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - G Felici
- INFN Laboratori Nazionali di Frascati, I-00044, Frascati, Italy
| | - C Q Feng
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | | | - C D Fu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Q Gao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y Gao
- Tsinghua University, Beijing 100084, People's Republic of China
| | - I Garzia
- INFN Sezione di Ferrara, I-44122 Ferrara, Italy
| | - K Goetzen
- GSI Helmholtzcentre for Heavy Ion Research GmbH, D-64291 Darmstadt, Germany
| | - W X Gong
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - W Gradl
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - M Greco
- University of Turin, I-10125 Turin, Italy
- INFN, I-10125 Turin, Italy
| | - M H Gu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y T Gu
- GuangXi University, Nanning 530004, People's Republic of China
| | - Y H Guan
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - A Q Guo
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L B Guo
- Nanjing Normal University, Nanjing 210023, People's Republic of China
| | - T Guo
- Nanjing Normal University, Nanjing 210023, People's Republic of China
| | - Y Guo
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y P Guo
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - Z Haddadi
- KVI-CART, University of Groningen, NL-9747 AA Groningen, The Netherlands
| | - A Hafner
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - S Han
- Wuhan University, Wuhan 430072, People's Republic of China
| | - Y L Han
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - F A Harris
- University of Hawaii, Honolulu, Hawaii 96822, USA
| | - K L He
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z Y He
- Nankai University, Tianjin 300071, People's Republic of China
| | - T Held
- Bochum Ruhr-University, D-44780 Bochum, Germany
| | - Y K Heng
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z L Hou
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - C Hu
- Nanjing Normal University, Nanjing 210023, People's Republic of China
| | - H M Hu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J F Hu
- University of Turin, I-10125 Turin, Italy
| | - T Hu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y Hu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - G M Huang
- Central China Normal University, Wuhan 430079, People's Republic of China
| | - G S Huang
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - H P Huang
- Wuhan University, Wuhan 430072, People's Republic of China
| | - J S Huang
- Henan Normal University, Xinxiang 453007, People's Republic of China
| | - X T Huang
- Shandong University, Jinan 250100, People's Republic of China
| | - Y Huang
- Nanjing University, Nanjing 210093, People's Republic of China
| | - T Hussain
- University of the Punjab, Lahore 54590, Pakistan
| | - Q Ji
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Q P Ji
- Nankai University, Tianjin 300071, People's Republic of China
| | - X B Ji
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X L Ji
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L L Jiang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L W Jiang
- Wuhan University, Wuhan 430072, People's Republic of China
| | - X S Jiang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J B Jiao
- Shandong University, Jinan 250100, People's Republic of China
| | - Z Jiao
- Huangshan College, Huangshan 245000, People's Republic of China
| | - D P Jin
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S Jin
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - T Johansson
- Uppsala University, Box 516, SE-75120 Uppsala, Sweden
| | - A Julin
- University of Minnesota, Minneapolis, Minnesota 55455, USA
| | | | - X L Kang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X S Kang
- Nankai University, Tianjin 300071, People's Republic of China
| | - M Kavatsyuk
- KVI-CART, University of Groningen, NL-9747 AA Groningen, The Netherlands
| | - B C Ke
- Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
| | - R Kliemt
- Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - B Kloss
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - O B Kolcu
- Dogus University, 34722 Istanbul, Turkey
| | - B Kopf
- Bochum Ruhr-University, D-44780 Bochum, Germany
| | - M Kornicer
- University of Hawaii, Honolulu, Hawaii 96822, USA
| | - W Kuehn
- Justus Liebig University Giessen, II. Physikalisches Institut, Heinrich-Buff-Ring 16, D-35392 Giessen, Germany
| | - A Kupsc
- Uppsala University, Box 516, SE-75120 Uppsala, Sweden
| | - W Lai
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J S Lange
- Justus Liebig University Giessen, II. Physikalisches Institut, Heinrich-Buff-Ring 16, D-35392 Giessen, Germany
| | - M Lara
- Indiana University, Bloomington, Indiana 47405, USA
| | - P Larin
- Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - Cheng Li
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - C H Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - D M Li
- Zhengzhou University, Zhengzhou 450001, People's Republic of China
| | - F Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - G Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - H B Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J C Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Jin Li
- Seoul National University, Seoul 151-747, Korea
| | - K Li
- Hangzhou Normal University, Hangzhou 310036, People's Republic of China
| | - K Li
- Shandong University, Jinan 250100, People's Republic of China
| | - P R Li
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - T Li
- Shandong University, Jinan 250100, People's Republic of China
| | - W D Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - W G Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X L Li
- Shandong University, Jinan 250100, People's Republic of China
| | - X M Li
- GuangXi University, Nanning 530004, People's Republic of China
| | - X N Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X Q Li
- Nankai University, Tianjin 300071, People's Republic of China
| | - Z B Li
- Sun Yat-Sen University, Guangzhou 510275, People's Republic of China
| | - H Liang
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Y F Liang
- Sichuan University, Chengdu 610064, People's Republic of China
| | - Y T Liang
- Justus Liebig University Giessen, II. Physikalisches Institut, Heinrich-Buff-Ring 16, D-35392 Giessen, Germany
| | - G R Liao
- Guangxi Normal University, Guilin 541004, People's Republic of China
| | - D X Lin
- Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - B J Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - C L Liu
- Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
| | - C X Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - F H Liu
- Shanxi University, Taiyuan 030006, People's Republic of China
| | - Fang Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Feng Liu
- Central China Normal University, Wuhan 430079, People's Republic of China
| | - H B Liu
- GuangXi University, Nanning 530004, People's Republic of China
| | - H H Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - H H Liu
- Henan University of Science and Technology, Luoyang 471003, People's Republic of China
| | - H M Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J P Liu
- Wuhan University, Wuhan 430072, People's Republic of China
| | - J Y Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - K Liu
- Tsinghua University, Beijing 100084, People's Republic of China
| | - K Y Liu
- Liaoning University, Shenyang 110036, People's Republic of China
| | - L D Liu
- Peking University, Beijing 100871, People's Republic of China
| | - Q Liu
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - S B Liu
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - X Liu
- Lanzhou University, Lanzhou 730000, People's Republic of China
| | - X X Liu
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Y B Liu
- Nankai University, Tianjin 300071, People's Republic of China
| | - Z A Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Zhiqiang Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Zhiqing Liu
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - H Loehner
- KVI-CART, University of Groningen, NL-9747 AA Groningen, The Netherlands
| | - X C Lou
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - H J Lu
- Huangshan College, Huangshan 245000, People's Republic of China
| | - J G Lu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - R Q Lu
- Hunan University, Changsha 410082, People's Republic of China
| | - Y Lu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y P Lu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - C L Luo
- Nanjing Normal University, Nanjing 210023, People's Republic of China
| | - M X Luo
- Zhejiang University, Hangzhou 310027, People's Republic of China
| | - T Luo
- University of Hawaii, Honolulu, Hawaii 96822, USA
| | - X L Luo
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M Lv
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X R Lyu
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - F C Ma
- Liaoning University, Shenyang 110036, People's Republic of China
| | - H L Ma
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L L Ma
- Shandong University, Jinan 250100, People's Republic of China
| | - Q M Ma
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S Ma
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - T Ma
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X N Ma
- Nankai University, Tianjin 300071, People's Republic of China
| | - X Y Ma
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - F E Maas
- Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - M Maggiora
- University of Turin, I-10125 Turin, Italy
- INFN, I-10125 Turin, Italy
| | - Q A Malik
- University of the Punjab, Lahore 54590, Pakistan
| | - Y J Mao
- Peking University, Beijing 100871, People's Republic of China
| | - Z P Mao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S Marcello
- University of Turin, I-10125 Turin, Italy
- INFN, I-10125 Turin, Italy
| | - J G Messchendorp
- KVI-CART, University of Groningen, NL-9747 AA Groningen, The Netherlands
| | - J Min
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - T J Min
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - R E Mitchell
- Indiana University, Bloomington, Indiana 47405, USA
| | - X H Mo
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y J Mo
- Central China Normal University, Wuhan 430079, People's Republic of China
| | - H Moeini
- KVI-CART, University of Groningen, NL-9747 AA Groningen, The Netherlands
| | - C Morales Morales
- Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - K Moriya
- Indiana University, Bloomington, Indiana 47405, USA
| | - N Yu Muchnoi
- G. I. Budker Institute of Nuclear Physics SB RAS (BINP), Novosibirsk 630090, Russia
| | - H Muramatsu
- University of Minnesota, Minneapolis, Minnesota 55455, USA
| | - Y Nefedov
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow Region, Russia
| | - F Nerling
- Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - I B Nikolaev
- G. I. Budker Institute of Nuclear Physics SB RAS (BINP), Novosibirsk 630090, Russia
| | - Z Ning
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S Nisar
- COMSATS Institute of Information Technology, Lahore, Defence Road, Off Raiwind Road, 54000 Lahore, Pakistan
| | - S L Niu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X Y Niu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S L Olsen
- Seoul National University, Seoul 151-747, Korea
| | - Q Ouyang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S Pacetti
- INFN and University of Perugia, I-06100 Perugia, Italy
| | - P Patteri
- INFN Laboratori Nazionali di Frascati, I-00044, Frascati, Italy
| | - M Pelizaeus
- Bochum Ruhr-University, D-44780 Bochum, Germany
| | - H P Peng
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - K Peters
- GSI Helmholtzcentre for Heavy Ion Research GmbH, D-64291 Darmstadt, Germany
| | - J L Ping
- Nanjing Normal University, Nanjing 210023, People's Republic of China
| | - R G Ping
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - R Poling
- University of Minnesota, Minneapolis, Minnesota 55455, USA
| | - Y N Pu
- Hunan University, Changsha 410082, People's Republic of China
| | - M Qi
- Nanjing University, Nanjing 210093, People's Republic of China
| | - S Qian
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - C F Qiao
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - L Q Qin
- Shandong University, Jinan 250100, People's Republic of China
| | - N Qin
- Wuhan University, Wuhan 430072, People's Republic of China
| | - X S Qin
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y Qin
- Peking University, Beijing 100871, People's Republic of China
| | - Z H Qin
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J F Qiu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - K H Rashid
- University of the Punjab, Lahore 54590, Pakistan
| | - C F Redmer
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - H L Ren
- Hunan University, Changsha 410082, People's Republic of China
| | - M Ripka
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - G Rong
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X D Ruan
- GuangXi University, Nanning 530004, People's Republic of China
| | - V Santoro
- INFN Sezione di Ferrara, I-44122 Ferrara, Italy
| | - A Sarantsev
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow Region, Russia
| | - M Savrié
- University of Ferrara, I-44122 Ferrara, Italy
| | - K Schoenning
- Uppsala University, Box 516, SE-75120 Uppsala, Sweden
| | - S Schumann
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - W Shan
- Peking University, Beijing 100871, People's Republic of China
| | - M Shao
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - C P Shen
- Beihang University, Beijing 100191, People's Republic of China
| | - P X Shen
- Nankai University, Tianjin 300071, People's Republic of China
| | - X Y Shen
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - H Y Sheng
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M R Shepherd
- Indiana University, Bloomington, Indiana 47405, USA
| | - W M Song
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X Y Song
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S Sosio
- University of Turin, I-10125 Turin, Italy
- INFN, I-10125 Turin, Italy
| | - S Spataro
- University of Turin, I-10125 Turin, Italy
- INFN, I-10125 Turin, Italy
| | - B Spruck
- Justus Liebig University Giessen, II. Physikalisches Institut, Heinrich-Buff-Ring 16, D-35392 Giessen, Germany
| | - G X Sun
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J F Sun
- Henan Normal University, Xinxiang 453007, People's Republic of China
| | - S S Sun
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y J Sun
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Y Z Sun
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z J Sun
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z T Sun
- Indiana University, Bloomington, Indiana 47405, USA
| | - C J Tang
- Sichuan University, Chengdu 610064, People's Republic of China
| | - X Tang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - I Tapan
- Uludag University, 16059 Bursa, Turkey
| | - E H Thorndike
- University of Rochester, Rochester, New York 14627, USA
| | - M Tiemens
- KVI-CART, University of Groningen, NL-9747 AA Groningen, The Netherlands
| | - D Toth
- University of Minnesota, Minneapolis, Minnesota 55455, USA
| | - M Ullrich
- Justus Liebig University Giessen, II. Physikalisches Institut, Heinrich-Buff-Ring 16, D-35392 Giessen, Germany
| | - I Uman
- Dogus University, 34722 Istanbul, Turkey
| | - G S Varner
- University of Hawaii, Honolulu, Hawaii 96822, USA
| | - B Wang
- Nankai University, Tianjin 300071, People's Republic of China
| | - B L Wang
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - D Wang
- Peking University, Beijing 100871, People's Republic of China
| | - D Y Wang
- Peking University, Beijing 100871, People's Republic of China
| | - K Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L L Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L S Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M Wang
- Shandong University, Jinan 250100, People's Republic of China
| | - P Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - P L Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Q J Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S G Wang
- Peking University, Beijing 100871, People's Republic of China
| | - W Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X F Wang
- Tsinghua University, Beijing 100084, People's Republic of China
| | - Y D Wang
- INFN Laboratori Nazionali di Frascati, I-00044, Frascati, Italy
| | - Y F Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y Q Wang
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - Z Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z G Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z H Wang
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Z Y Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - D H Wei
- Guangxi Normal University, Guilin 541004, People's Republic of China
| | - J B Wei
- Peking University, Beijing 100871, People's Republic of China
| | - P Weidenkaff
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - S P Wen
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - U Wiedner
- Bochum Ruhr-University, D-44780 Bochum, Germany
| | - M Wolke
- Uppsala University, Box 516, SE-75120 Uppsala, Sweden
| | - L H Wu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z Wu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L G Xia
- Tsinghua University, Beijing 100084, People's Republic of China
| | - Y Xia
- Hunan University, Changsha 410082, People's Republic of China
| | - D Xiao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z J Xiao
- Nanjing Normal University, Nanjing 210023, People's Republic of China
| | - Y G Xie
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Q L Xiu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - G F Xu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L Xu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Q J Xu
- Hangzhou Normal University, Hangzhou 310036, People's Republic of China
| | - Q N Xu
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - X P Xu
- Soochow University, Suzhou 215006, People's Republic of China
| | - L Yan
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - W B Yan
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - W C Yan
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Y H Yan
- Hunan University, Changsha 410082, People's Republic of China
| | - H X Yang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L Yang
- Wuhan University, Wuhan 430072, People's Republic of China
| | - Y Yang
- Central China Normal University, Wuhan 430079, People's Republic of China
| | - Y X Yang
- Guangxi Normal University, Guilin 541004, People's Republic of China
| | - H Ye
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M Ye
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M H Ye
- China Center of Advanced Science and Technology, Beijing 100190, People's Republic of China
| | - J H Yin
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - B X Yu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - C X Yu
- Nankai University, Tianjin 300071, People's Republic of China
| | - H W Yu
- Peking University, Beijing 100871, People's Republic of China
| | - J S Yu
- Lanzhou University, Lanzhou 730000, People's Republic of China
| | - C Z Yuan
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - W L Yuan
- Nanjing University, Nanjing 210093, People's Republic of China
| | - Y Yuan
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - A Yuncu
- Dogus University, 34722 Istanbul, Turkey
| | - A A Zafar
- University of the Punjab, Lahore 54590, Pakistan
| | - A Zallo
- INFN Laboratori Nazionali di Frascati, I-00044, Frascati, Italy
| | - Y Zeng
- Hunan University, Changsha 410082, People's Republic of China
| | - B X Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - B Y Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - C Zhang
- Nanjing University, Nanjing 210093, People's Republic of China
| | - C C Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - D H Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - H H Zhang
- Sun Yat-Sen University, Guangzhou 510275, People's Republic of China
| | - H Y Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J J Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J L Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J Q Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J W Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J Y Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J Z Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - K Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S H Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X J Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X Y Zhang
- Shandong University, Jinan 250100, People's Republic of China
| | - Y Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y H Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z H Zhang
- Central China Normal University, Wuhan 430079, People's Republic of China
| | - Z P Zhang
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Z Y Zhang
- Wuhan University, Wuhan 430072, People's Republic of China
| | - G Zhao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J W Zhao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J Y Zhao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J Z Zhao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Lei Zhao
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Ling Zhao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M G Zhao
- Nankai University, Tianjin 300071, People's Republic of China
| | - Q Zhao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Q W Zhao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S J Zhao
- Zhengzhou University, Zhengzhou 450001, People's Republic of China
| | - T C Zhao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y B Zhao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z G Zhao
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - A Zhemchugov
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow Region, Russia
| | - B Zheng
- University of South China, Hengyang 421001, People's Republic of China
| | - J P Zheng
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - W J Zheng
- Shandong University, Jinan 250100, People's Republic of China
| | - Y H Zheng
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - B Zhong
- Nanjing Normal University, Nanjing 210023, People's Republic of China
| | - L Zhou
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Li Zhou
- Nankai University, Tianjin 300071, People's Republic of China
| | - X Zhou
- Wuhan University, Wuhan 430072, People's Republic of China
| | - X K Zhou
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - X R Zhou
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - X Y Zhou
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - K Zhu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - K J Zhu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S Zhu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X L Zhu
- Tsinghua University, Beijing 100084, People's Republic of China
| | - Y C Zhu
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Y S Zhu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z A Zhu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J Zhuang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - B S Zou
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J H Zou
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
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Ablikim M, Achasov MN, Ai XC, Albayrak O, Albrecht M, Ambrose DJ, Amoroso A, An FF, An Q, Bai JZ, Baldini Ferroli R, Ban Y, Bennett DW, Bennett JV, Bertani M, Bettoni D, Bian JM, Bianchi F, Boger E, Bondarenko O, Boyko I, Briere RA, Cai H, Cai X, Cakir O, Calcaterra A, Cao GF, Cetin SA, Chang JF, Chelkov G, Chen G, Chen HS, Chen HY, Chen JC, Chen ML, Chen SJ, Chen X, Chen XR, Chen YB, Cheng HP, Chu XK, Chu YP, Cibinetto G, Cronin-Hennessy D, Dai HL, Dai JP, Dedovich D, Deng ZY, Denig A, Denysenko I, Destefanis M, De Mori F, Ding Y, Dong C, Dong J, Dong LY, Dong MY, Du SX, Duan PF, Fan JZ, Fang J, Fang SS, Fang X, Fang Y, Fava L, Feldbauer F, Felici G, Feng CQ, Fioravanti E, Fu CD, Gao Q, Gao Y, Garzia I, Goetzen K, Gong WX, Gradl W, Greco M, Gu MH, Gu YT, Guan YH, Guo AQ, Guo LB, Guo T, Guo Y, Guo YP, Haddadi Z, Hafner A, Han S, Han YL, Harris FA, He KL, He ZY, Held T, Heng YK, Hou ZL, Hu C, Hu HM, Hu JF, Hu T, Hu Y, Huang GM, Huang GS, Huang HP, Huang JS, Huang XT, Huang Y, Hussain T, Ji Q, Ji QP, Ji XB, Ji XL, Jiang LL, Jiang LW, Jiang XS, Jiao JB, Jiao Z, Jin DP, Jin S, Johansson T, Julin A, Kalantar-Nayestanaki N, Kang XL, Kang XS, Kavatsyuk M, Ke BC, Kliemt R, Kloss B, Kolcu OB, Kopf B, Kornicer M, Kuehn W, Kupsc A, Lai W, Lange JS, Lara M, Larin P, Leyhe M, Li C, Li DM, Li F, Li G, Li HB, Li JC, Li J, Li K, Li K, Li QJ, Li T, Li WD, Li WG, Li XL, Li XM, Li XN, Li XQ, Li ZB, Liang H, Liang YF, Liang YT, Liao GR, Lin DX, Liu BJ, Liu CL, Liu CX, Liu FH, Liu F, Liu F, Liu HB, Liu HH, Liu HH, Liu HM, Liu J, Liu JP, Liu JY, Liu K, Liu KY, Liu LD, Liu Q, Liu SB, Liu X, Liu XX, Liu YB, Liu ZA, Liu Z, Liu Z, Loehner H, Lou XC, Lu HJ, Lu JG, Lu RQ, Lu Y, Lu YP, Luo CL, Luo MX, Luo T, Luo XL, Lv M, Lyu XR, Ma FC, Ma HL, Ma QM, Ma S, Ma T, Ma XN, Ma XY, Maas FE, Maggiora M, Malik QA, Mao YJ, Mao ZP, Marcello S, Messchendorp JG, Min J, Min TJ, Mitchell RE, Mo XH, Mo YJ, Moeini H, Morales Morales C, Moriya K, Muchnoi NY, Muramatsu H, Nefedov Y, Nerling F, Nikolaev IB, Ning Z, Nisar S, Niu SL, Niu XY, Olsen SL, Ouyang Q, Pacetti S, Patteri P, Pelizaeus M, Peng HP, Peters K, Ping JL, Ping RG, Poling R, Pu YN, Qi M, Qian S, Qiao CF, Qin LQ, Qin N, Qin XS, Qin Y, Qin ZH, Qiu JF, Rashid KH, Redmer CF, Ren HL, Ripka M, Rong G, Ruan XD, Santoro V, Sarantsev A, Savrié M, Schoenning K, Schumann S, Shan W, Shao M, Shen CP, Shen PX, Shen XY, Sheng HY, Shepherd MR, Song WM, Song XY, Sosio S, Spataro S, Spruck B, Sun GX, Sun JF, Sun SS, Sun YJ, Sun YZ, Sun ZJ, Sun ZT, Tang CJ, Tang X, Tapan I, Thorndike EH, Tiemens M, Toth D, Ullrich M, Uman I, Varner GS, Wang B, Wang BL, Wang D, Wang DY, Wang K, Wang LL, Wang LS, Wang M, Wang P, Wang PL, Wang QJ, Wang SG, Wang W, Wang XF, Wang YD, Wang YF, Wang YQ, Wang Z, Wang ZG, Wang ZH, Wang ZY, Wei DH, Wei JB, Weidenkaff P, Wen SP, Wiedner U, Wolke M, Wu LH, Wu Z, Xia LG, Xia Y, Xiao D, Xiao ZJ, Xie YG, Xiu QL, Xu GF, Xu L, Xu QJ, Xu QN, Xu XP, Xue Z, Yan L, Yan WB, Yan WC, Yan YH, Yang HX, Yang L, Yang Y, Yang YX, Ye H, Ye M, Ye MH, Yin JH, Yu BX, Yu CX, Yu HW, Yu JS, Yuan CZ, Yuan WL, Yuan Y, Yuncu A, Zafar AA, Zallo A, Zeng Y, Zhang BX, Zhang BY, Zhang C, Zhang CC, Zhang DH, Zhang HH, Zhang HT, Zhang HY, Zhang JJ, Zhang JL, Zhang JQ, Zhang JW, Zhang JY, Zhang JZ, Zhang K, Zhang L, Zhang SH, Zhang XJ, Zhang XY, Zhang Y, Zhang YH, Zhang ZH, Zhang ZP, Zhang ZY, Zhao G, Zhao JW, Zhao JY, Zhao JZ, Zhao L, Zhao L, Zhao MG, Zhao Q, Zhao QW, Zhao SJ, Zhao TC, Zhao YB, Zhao ZG, Zhemchugov A, Zheng B, Zheng JP, Zheng YH, Zhong B, Zhou L, Zhou L, Zhou X, Zhou XK, Zhou XR, Zhou XY, Zhu K, Zhu KJ, Zhu S, Zhu XL, Zhu YC, Zhu YS, Zhu ZA, Zhuang J, Zou BS, Zou JH. Observation of e(+)e(-)→π(0)π(0)hc and a neutral charmoniumlike structure Zc(4020)(0). Phys Rev Lett 2014; 113:212002. [PMID: 25479489 DOI: 10.1103/physrevlett.113.212002] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2014] [Indexed: 06/04/2023]
Abstract
Using data collected with the BESIII detector operating at the Beijing Electron Positron Collider at center-of-mass energies of sqrt[s]=4.23, 4.26, and 4.36 GeV, we observe e(+)e(-)→π(0)π(0)hc for the first time. The Born cross sections are measured and found to be about half of those of e(+)e(-)→π(+)π(-)hc within less than 2σ. In the π(0)hc mass spectrum, a structure at 4.02 GeV/c(2) is found. It is most likely to be the neutral isospin partner of the Zc(4020)(±) observed in the process of e(+)e(-)→π(+)π(-)hc being found. A fit to the π(0)hc invariant mass spectrum, with the width of the Zc(4020)(0) fixed to that of its charged isospin partner and possible interferences with non-Zc(4020)(0) amplitudes neglected, gives a mass of (4023.9±2.2±3.8) MeV/c(2) for the Zc(4020)(0), where the first error is statistical and the second systematic.
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Affiliation(s)
- M Ablikim
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M N Achasov
- G.I. Budker Institute of Nuclear Physics SB RAS (BINP), Novosibirsk 630090, Russia
| | - X C Ai
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - O Albayrak
- Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
| | - M Albrecht
- Bochum Ruhr-University, D-44780 Bochum, Germany
| | - D J Ambrose
- University of Rochester, Rochester, New York 14627, USA
| | - A Amoroso
- University of Turin, I-10125, Turin, Italy and INFN, I-10125, Turin, Italy
| | - F F An
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Q An
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - J Z Bai
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | | | - Y Ban
- Peking University, Beijing 100871, People's Republic of China
| | - D W Bennett
- Indiana University, Bloomington, Indiana 47405, USA
| | - J V Bennett
- Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
| | - M Bertani
- INFN Laboratori Nazionali di Frascati, I-00044, Frascati, Italy
| | - D Bettoni
- INFN Sezione di Ferrara, I-44122, Ferrara, Italy
| | - J M Bian
- University of Minnesota, Minneapolis, Minnesota 55455, USA
| | - F Bianchi
- University of Turin, I-10125, Turin, Italy and INFN, I-10125, Turin, Italy
| | - E Boger
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - O Bondarenko
- KVI-CART, University of Groningen, NL-9747 AA Groningen, Netherlands
| | - I Boyko
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - R A Briere
- Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
| | - H Cai
- Wuhan University, Wuhan 430072, People's Republic of China
| | - X Cai
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - O Cakir
- Ankara University, Dogol Caddesi, 06100 Tandogan, Ankara, Turkey
| | - A Calcaterra
- INFN Laboratori Nazionali di Frascati, I-00044, Frascati, Italy
| | - G F Cao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S A Cetin
- Dogus University, 34722 Istanbul, Turkey
| | - J F Chang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - G Chelkov
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - G Chen
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - H S Chen
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - H Y Chen
- Beihang University, Beijing 100191, People's Republic of China
| | - J C Chen
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M L Chen
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S J Chen
- Nanjing University, Nanjing 210093, People's Republic of China
| | - X Chen
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X R Chen
- Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Y B Chen
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - H P Cheng
- Huangshan College, Huangshan 245000, People's Republic of China
| | - X K Chu
- Peking University, Beijing 100871, People's Republic of China
| | - Y P Chu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - G Cibinetto
- INFN Sezione di Ferrara, I-44122, Ferrara, Italy
| | | | - H L Dai
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J P Dai
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - D Dedovich
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - Z Y Deng
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - A Denig
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - I Denysenko
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - M Destefanis
- University of Turin, I-10125, Turin, Italy and INFN, I-10125, Turin, Italy
| | - F De Mori
- University of Turin, I-10125, Turin, Italy and INFN, I-10125, Turin, Italy
| | - Y Ding
- Liaoning University, Shenyang 110036, People's Republic of China
| | - C Dong
- Nankai University, Tianjin 300071, People's Republic of China
| | - J Dong
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L Y Dong
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M Y Dong
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S X Du
- Zhengzhou University, Zhengzhou 450001, People's Republic of China
| | - P F Duan
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J Z Fan
- Tsinghua University, Beijing 100084, People's Republic of China
| | - J Fang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S S Fang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X Fang
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Y Fang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L Fava
- University of Eastern Piedmont, I-15121, Alessandria, Italy and INFN, I-10125, Turin, Italy
| | - F Feldbauer
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - G Felici
- INFN Laboratori Nazionali di Frascati, I-00044, Frascati, Italy
| | - C Q Feng
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - E Fioravanti
- INFN Sezione di Ferrara, I-44122, Ferrara, Italy
| | - C D Fu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Q Gao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y Gao
- Tsinghua University, Beijing 100084, People's Republic of China
| | - I Garzia
- INFN Sezione di Ferrara, I-44122, Ferrara, Italy
| | - K Goetzen
- GSI Helmholtzcentre for Heavy Ion Research GmbH, D-64291 Darmstadt, Germany
| | - W X Gong
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - W Gradl
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - M Greco
- University of Turin, I-10125, Turin, Italy and INFN, I-10125, Turin, Italy
| | - M H Gu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y T Gu
- GuangXi University, Nanning 530004, People's Republic of China
| | - Y H Guan
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - A Q Guo
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L B Guo
- Nanjing Normal University, Nanjing 210023, People's Republic of China
| | - T Guo
- Nanjing Normal University, Nanjing 210023, People's Republic of China
| | - Y Guo
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y P Guo
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - Z Haddadi
- KVI-CART, University of Groningen, NL-9747 AA Groningen, Netherlands
| | - A Hafner
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - S Han
- Wuhan University, Wuhan 430072, People's Republic of China
| | - Y L Han
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - F A Harris
- University of Hawaii, Honolulu, Hawaii 96822, USA
| | - K L He
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z Y He
- Nankai University, Tianjin 300071, People's Republic of China
| | - T Held
- Bochum Ruhr-University, D-44780 Bochum, Germany
| | - Y K Heng
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z L Hou
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - C Hu
- Nanjing Normal University, Nanjing 210023, People's Republic of China
| | - H M Hu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J F Hu
- University of Turin, I-10125, Turin, Italy
| | - T Hu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y Hu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - G M Huang
- Central China Normal University, Wuhan 430079, People's Republic of China
| | - G S Huang
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - H P Huang
- Wuhan University, Wuhan 430072, People's Republic of China
| | - J S Huang
- Henan Normal University, Xinxiang 453007, People's Republic of China
| | - X T Huang
- Shandong University, Jinan 250100, People's Republic of China
| | - Y Huang
- Nanjing University, Nanjing 210093, People's Republic of China
| | - T Hussain
- University of the Punjab, Lahore-54590, Pakistan
| | - Q Ji
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Q P Ji
- Nankai University, Tianjin 300071, People's Republic of China
| | - X B Ji
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X L Ji
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L L Jiang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L W Jiang
- Wuhan University, Wuhan 430072, People's Republic of China
| | - X S Jiang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J B Jiao
- Shandong University, Jinan 250100, People's Republic of China
| | - Z Jiao
- Huangshan College, Huangshan 245000, People's Republic of China
| | - D P Jin
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S Jin
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - T Johansson
- Uppsala University, Box 516, SE-75120 Uppsala, Sweden
| | - A Julin
- University of Minnesota, Minneapolis, Minnesota 55455, USA
| | | | - X L Kang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X S Kang
- Nankai University, Tianjin 300071, People's Republic of China
| | - M Kavatsyuk
- KVI-CART, University of Groningen, NL-9747 AA Groningen, Netherlands
| | - B C Ke
- Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
| | - R Kliemt
- Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - B Kloss
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - O B Kolcu
- Dogus University, 34722 Istanbul, Turkey
| | - B Kopf
- Bochum Ruhr-University, D-44780 Bochum, Germany
| | - M Kornicer
- University of Hawaii, Honolulu, Hawaii 96822, USA
| | - W Kuehn
- Justus Liebig University Giessen, II. Physikalisches Institut, Heinrich-Buff-Ring 16, D-35392 Giessen, Germany
| | - A Kupsc
- Uppsala University, Box 516, SE-75120 Uppsala, Sweden
| | - W Lai
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J S Lange
- Justus Liebig University Giessen, II. Physikalisches Institut, Heinrich-Buff-Ring 16, D-35392 Giessen, Germany
| | - M Lara
- Indiana University, Bloomington, Indiana 47405, USA
| | - P Larin
- Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - M Leyhe
- Bochum Ruhr-University, D-44780 Bochum, Germany
| | - Cheng Li
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - D M Li
- Zhengzhou University, Zhengzhou 450001, People's Republic of China
| | - F Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - G Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - H B Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J C Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Jin Li
- Seoul National University, Seoul, 151-747 Korea
| | - K Li
- Hangzhou Normal University, Hangzhou 310036, People's Republic of China
| | - K Li
- Shandong University, Jinan 250100, People's Republic of China
| | - Q J Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - T Li
- Shandong University, Jinan 250100, People's Republic of China
| | - W D Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - W G Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X L Li
- Shandong University, Jinan 250100, People's Republic of China
| | - X M Li
- GuangXi University, Nanning 530004, People's Republic of China
| | - X N Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X Q Li
- Nankai University, Tianjin 300071, People's Republic of China
| | - Z B Li
- Sun Yat-Sen University, Guangzhou 510275, People's Republic of China
| | - H Liang
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Y F Liang
- Sichuan University, Chengdu 610064, People's Republic of China
| | - Y T Liang
- Justus Liebig University Giessen, II. Physikalisches Institut, Heinrich-Buff-Ring 16, D-35392 Giessen, Germany
| | - G R Liao
- Guangxi Normal University, Guilin 541004, People's Republic of China
| | - D X Lin
- Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - B J Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - C L Liu
- Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
| | - C X Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - F H Liu
- Shanxi University, Taiyuan 030006, People's Republic of China
| | - Fang Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Feng Liu
- Central China Normal University, Wuhan 430079, People's Republic of China
| | - H B Liu
- GuangXi University, Nanning 530004, People's Republic of China
| | - H H Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - H H Liu
- Henan University of Science and Technology, Luoyang 471003, People's Republic of China
| | - H M Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J P Liu
- Wuhan University, Wuhan 430072, People's Republic of China
| | - J Y Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - K Liu
- Tsinghua University, Beijing 100084, People's Republic of China
| | - K Y Liu
- Liaoning University, Shenyang 110036, People's Republic of China
| | - L D Liu
- Peking University, Beijing 100871, People's Republic of China
| | - Q Liu
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - S B Liu
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - X Liu
- Lanzhou University, Lanzhou 730000, People's Republic of China
| | - X X Liu
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Y B Liu
- Nankai University, Tianjin 300071, People's Republic of China
| | - Z A Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Zhiqiang Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Zhiqing Liu
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - H Loehner
- KVI-CART, University of Groningen, NL-9747 AA Groningen, Netherlands
| | - X C Lou
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - H J Lu
- Huangshan College, Huangshan 245000, People's Republic of China
| | - J G Lu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - R Q Lu
- Hunan University, Changsha 410082, People's Republic of China
| | - Y Lu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y P Lu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - C L Luo
- Nanjing Normal University, Nanjing 210023, People's Republic of China
| | - M X Luo
- Zhejiang University, Hangzhou 310027, People's Republic of China
| | - T Luo
- University of Hawaii, Honolulu, Hawaii 96822, USA
| | - X L Luo
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M Lv
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X R Lyu
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - F C Ma
- Liaoning University, Shenyang 110036, People's Republic of China
| | - H L Ma
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Q M Ma
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S Ma
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - T Ma
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X N Ma
- Nankai University, Tianjin 300071, People's Republic of China
| | - X Y Ma
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - F E Maas
- Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - M Maggiora
- University of Turin, I-10125, Turin, Italy and INFN, I-10125, Turin, Italy
| | - Q A Malik
- University of the Punjab, Lahore-54590, Pakistan
| | - Y J Mao
- Peking University, Beijing 100871, People's Republic of China
| | - Z P Mao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S Marcello
- University of Turin, I-10125, Turin, Italy and INFN, I-10125, Turin, Italy
| | - J G Messchendorp
- KVI-CART, University of Groningen, NL-9747 AA Groningen, Netherlands
| | - J Min
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - T J Min
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - R E Mitchell
- Indiana University, Bloomington, Indiana 47405, USA
| | - X H Mo
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y J Mo
- Central China Normal University, Wuhan 430079, People's Republic of China
| | - H Moeini
- KVI-CART, University of Groningen, NL-9747 AA Groningen, Netherlands
| | - C Morales Morales
- Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - K Moriya
- Indiana University, Bloomington, Indiana 47405, USA
| | - N Yu Muchnoi
- G.I. Budker Institute of Nuclear Physics SB RAS (BINP), Novosibirsk 630090, Russia
| | - H Muramatsu
- University of Minnesota, Minneapolis, Minnesota 55455, USA
| | - Y Nefedov
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - F Nerling
- Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - I B Nikolaev
- G.I. Budker Institute of Nuclear Physics SB RAS (BINP), Novosibirsk 630090, Russia
| | - Z Ning
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S Nisar
- COMSATS Institute of Information Technology, Lahore, Defence Road, Off Raiwind Road, 54000 Lahore, Pakistan
| | - S L Niu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X Y Niu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S L Olsen
- Seoul National University, Seoul, 151-747 Korea
| | - Q Ouyang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S Pacetti
- INFN and University of Perugia, I-06100, Perugia, Italy
| | - P Patteri
- INFN Laboratori Nazionali di Frascati, I-00044, Frascati, Italy
| | - M Pelizaeus
- Bochum Ruhr-University, D-44780 Bochum, Germany
| | - H P Peng
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - K Peters
- GSI Helmholtzcentre for Heavy Ion Research GmbH, D-64291 Darmstadt, Germany
| | - J L Ping
- Nanjing Normal University, Nanjing 210023, People's Republic of China
| | - R G Ping
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - R Poling
- University of Minnesota, Minneapolis, Minnesota 55455, USA
| | - Y N Pu
- Hunan University, Changsha 410082, People's Republic of China
| | - M Qi
- Nanjing University, Nanjing 210093, People's Republic of China
| | - S Qian
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - C F Qiao
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - L Q Qin
- Shandong University, Jinan 250100, People's Republic of China
| | - N Qin
- Wuhan University, Wuhan 430072, People's Republic of China
| | - X S Qin
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y Qin
- Peking University, Beijing 100871, People's Republic of China
| | - Z H Qin
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J F Qiu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - K H Rashid
- University of the Punjab, Lahore-54590, Pakistan
| | - C F Redmer
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - H L Ren
- Hunan University, Changsha 410082, People's Republic of China
| | - M Ripka
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - G Rong
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X D Ruan
- GuangXi University, Nanning 530004, People's Republic of China
| | - V Santoro
- INFN Sezione di Ferrara, I-44122, Ferrara, Italy
| | - A Sarantsev
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - M Savrié
- University of Ferrara, I-44122, Ferrara, Italy
| | - K Schoenning
- Uppsala University, Box 516, SE-75120 Uppsala, Sweden
| | - S Schumann
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - W Shan
- Peking University, Beijing 100871, People's Republic of China
| | - M Shao
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - C P Shen
- Beihang University, Beijing 100191, People's Republic of China
| | - P X Shen
- Nankai University, Tianjin 300071, People's Republic of China
| | - X Y Shen
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - H Y Sheng
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M R Shepherd
- Indiana University, Bloomington, Indiana 47405, USA
| | - W M Song
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X Y Song
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S Sosio
- University of Turin, I-10125, Turin, Italy and INFN, I-10125, Turin, Italy
| | - S Spataro
- University of Turin, I-10125, Turin, Italy and INFN, I-10125, Turin, Italy
| | - B Spruck
- Justus Liebig University Giessen, II. Physikalisches Institut, Heinrich-Buff-Ring 16, D-35392 Giessen, Germany
| | - G X Sun
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J F Sun
- Henan Normal University, Xinxiang 453007, People's Republic of China
| | - S S Sun
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y J Sun
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Y Z Sun
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z J Sun
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z T Sun
- Indiana University, Bloomington, Indiana 47405, USA
| | - C J Tang
- Sichuan University, Chengdu 610064, People's Republic of China
| | - X Tang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - I Tapan
- Uludag University, 16059 Bursa, Turkey
| | - E H Thorndike
- University of Rochester, Rochester, New York 14627, USA
| | - M Tiemens
- KVI-CART, University of Groningen, NL-9747 AA Groningen, Netherlands
| | - D Toth
- University of Minnesota, Minneapolis, Minnesota 55455, USA
| | - M Ullrich
- Justus Liebig University Giessen, II. Physikalisches Institut, Heinrich-Buff-Ring 16, D-35392 Giessen, Germany
| | - I Uman
- Dogus University, 34722 Istanbul, Turkey
| | - G S Varner
- University of Hawaii, Honolulu, Hawaii 96822, USA
| | - B Wang
- Nankai University, Tianjin 300071, People's Republic of China
| | - B L Wang
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - D Wang
- Peking University, Beijing 100871, People's Republic of China
| | - D Y Wang
- Peking University, Beijing 100871, People's Republic of China
| | - K Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L L Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L S Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M Wang
- Shandong University, Jinan 250100, People's Republic of China
| | - P Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - P L Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Q J Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S G Wang
- Peking University, Beijing 100871, People's Republic of China
| | - W Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X F Wang
- Tsinghua University, Beijing 100084, People's Republic of China
| | - Y D Wang
- INFN Laboratori Nazionali di Frascati, I-00044, Frascati, Italy
| | - Y F Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y Q Wang
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - Z Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z G Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z H Wang
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Z Y Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - D H Wei
- Guangxi Normal University, Guilin 541004, People's Republic of China
| | - J B Wei
- Peking University, Beijing 100871, People's Republic of China
| | - P Weidenkaff
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - S P Wen
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - U Wiedner
- Bochum Ruhr-University, D-44780 Bochum, Germany
| | - M Wolke
- Uppsala University, Box 516, SE-75120 Uppsala, Sweden
| | - L H Wu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z Wu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L G Xia
- Tsinghua University, Beijing 100084, People's Republic of China
| | - Y Xia
- Hunan University, Changsha 410082, People's Republic of China
| | - D Xiao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z J Xiao
- Nanjing Normal University, Nanjing 210023, People's Republic of China
| | - Y G Xie
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Q L Xiu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - G F Xu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L Xu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Q J Xu
- Hangzhou Normal University, Hangzhou 310036, People's Republic of China
| | - Q N Xu
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
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- Soochow University, Suzhou 215006, People's Republic of China
| | - Z Xue
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L Yan
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - W B Yan
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - W C Yan
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Y H Yan
- Hunan University, Changsha 410082, People's Republic of China
| | - H X Yang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L Yang
- Wuhan University, Wuhan 430072, People's Republic of China
| | - Y Yang
- Central China Normal University, Wuhan 430079, People's Republic of China
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- Guangxi Normal University, Guilin 541004, People's Republic of China
| | - H Ye
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M Ye
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M H Ye
- China Center of Advanced Science and Technology, Beijing 100190, People's Republic of China
| | - J H Yin
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - B X Yu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - C X Yu
- Nankai University, Tianjin 300071, People's Republic of China
| | - H W Yu
- Peking University, Beijing 100871, People's Republic of China
| | - J S Yu
- Lanzhou University, Lanzhou 730000, People's Republic of China
| | - C Z Yuan
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - W L Yuan
- Nanjing University, Nanjing 210093, People's Republic of China
| | - Y Yuan
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - A Yuncu
- Dogus University, 34722 Istanbul, Turkey
| | - A A Zafar
- University of the Punjab, Lahore-54590, Pakistan
| | - A Zallo
- INFN Laboratori Nazionali di Frascati, I-00044, Frascati, Italy
| | - Y Zeng
- Hunan University, Changsha 410082, People's Republic of China
| | - B X Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - B Y Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - C Zhang
- Nanjing University, Nanjing 210093, People's Republic of China
| | - C C Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - D H Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - H H Zhang
- Sun Yat-Sen University, Guangzhou 510275, People's Republic of China
| | - H T Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - H Y Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J J Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J L Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J Q Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J W Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J Y Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J Z Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - K Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S H Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X J Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X Y Zhang
- Shandong University, Jinan 250100, People's Republic of China
| | - Y Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y H Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z H Zhang
- Central China Normal University, Wuhan 430079, People's Republic of China
| | - Z P Zhang
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Z Y Zhang
- Wuhan University, Wuhan 430072, People's Republic of China
| | - G Zhao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J W Zhao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J Y Zhao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J Z Zhao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Lei Zhao
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Ling Zhao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M G Zhao
- Nankai University, Tianjin 300071, People's Republic of China
| | - Q Zhao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Q W Zhao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S J Zhao
- Zhengzhou University, Zhengzhou 450001, People's Republic of China
| | - T C Zhao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y B Zhao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z G Zhao
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - A Zhemchugov
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - B Zheng
- University of South China, Hengyang 421001, People's Republic of China
| | - J P Zheng
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y H Zheng
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - B Zhong
- Nanjing Normal University, Nanjing 210023, People's Republic of China
| | - L Zhou
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Li Zhou
- Nankai University, Tianjin 300071, People's Republic of China
| | - X Zhou
- Wuhan University, Wuhan 430072, People's Republic of China
| | - X K Zhou
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - X R Zhou
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - X Y Zhou
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - K Zhu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - K J Zhu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S Zhu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X L Zhu
- Tsinghua University, Beijing 100084, People's Republic of China
| | - Y C Zhu
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Y S Zhu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z A Zhu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J Zhuang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - B S Zou
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J H Zou
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
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Zhu YC, Cairney J, Li YC, Chen WY, Chen FC, Wu SK. High risk for obesity in children with a subtype of developmental coordination disorder. Res Dev Disabil 2014; 35:1727-1733. [PMID: 24685095 DOI: 10.1016/j.ridd.2014.02.020] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2013] [Revised: 02/20/2014] [Accepted: 02/27/2014] [Indexed: 06/03/2023]
Abstract
The purpose of this study was to compare the prevalence of overweight and obesity in typically developing (TD) children, children with developmental coordination disorder (DCD) and balance problems (DCD-BP), and children with DCD without balance problems (DCD-NBP). Two thousand and fifty-seven children (1095 boys, 962 girls) ages 9-12 years were recruited from 18 elementary schools in Taiwan. The Movement Assessment Battery for Children was used to assess motor coordination ability. International cut-off points for body mass index were used to classify participants into the following groups: normal-weight, overweight or obese. Compared with TD children, children in the DCD-BP group were more than twice as likely to be obese (OR=2.28; 95% CI=1.41-3.68). DCD-BP children were also more likely to be obese compared to DCD-NBP children (OR=1.79; 95% CI=1.02-3.16). Boys in the DCD-BP group were more likely to be obese when compared to DCD-BP girls (OR=3.12; 95% CI=1.28-7.57). Similarly, DCD-NBP boys were more likely to be obese when compared to DCD-NBP girls (OR=2.67; 95% CI=1.21-5.89). Children with both DCD and BP were significantly more likely to be obese when compared to TD and DCD-NBP children. From an intervention perspective, the inclusion of regular physical activity, including activities that encourage development of both balance and energy expenditure, may be required to prevent obesity in this population.
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Affiliation(s)
- Yi-Ching Zhu
- Graduate Institute of Clinical Medical Science, China Medical University, Taichung City 404, Taiwan
| | - John Cairney
- CanChild Centre for Childhood Disability Research, Departments of Family Medicine, Psychiatry & Behavioural Neurosciences & Kinesiology, McMaster University, Hamilton, ON, Canada
| | - Yao-Chuen Li
- CanChild Centre for Childhood Disability Research, Departments of Family Medicine, Psychiatry & Behavioural Neurosciences & Kinesiology, McMaster University, Hamilton, ON, Canada
| | - Wei-Ying Chen
- School of Psychology, The University of Sydney, Sydney, NSW 2006, Australia
| | - Fu-Chen Chen
- Department of Recreation Sport & Health Promotion, National Pingtung University of Science & Technology, Taiwan
| | - Sheng K Wu
- Institute of Sport Performance, National Taiwan University of Physical Education & Sport, Taichung City 404, Taiwan.
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107
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Ablikim M, Achasov MN, Ai XC, Albayrak O, Albrecht M, Ambrose DJ, An FF, An Q, Bai JZ, Baldini Ferroli R, Ban Y, Bennett JV, Bertani M, Bian JM, Boger E, Bondarenko O, Boyko I, Braun S, Briere RA, Cai H, Cai X, Cakir O, Calcaterra A, Cao GF, Cetin SA, Chang JF, Chelkov G, Chen G, Chen HS, Chen JC, Chen ML, Chen SJ, Chen X, Chen XR, Chen YB, Cheng HP, Chu XK, Chu YP, Cronin-Hennessy D, Dai HL, Dai JP, Dedovich D, Deng ZY, Denig A, Denysenko I, Destefanis M, Ding WM, Ding Y, Dong C, Dong J, Dong LY, Dong MY, Du SX, Fan JZ, Fang J, Fang SS, Fang Y, Fava L, Feng CQ, Fu CD, Fuks O, Gao Q, Gao Y, Geng C, Goetzen K, Gong WX, Gradl W, Greco M, Gu MH, Gu YT, Guan YH, Guo AQ, Guo LB, Guo T, Guo YP, Han YL, Harris FA, He KL, He M, He ZY, Held T, Heng YK, Hou ZL, Hu C, Hu HM, Hu JF, Hu T, Huang GM, Huang GS, Huang HP, Huang JS, Huang L, Huang XT, Huang Y, Hussain T, Ji CS, Ji Q, Ji QP, Ji XB, Ji XL, Jiang LL, Jiang LW, Jiang XS, Jiao JB, Jiao Z, Jin DP, Jin S, Johansson T, Kalantar-Nayestanaki N, Kang XL, Kang XS, Kavatsyuk M, Kloss B, Kopf B, Kornicer M, Kuehn W, Kupsc A, Lai W, Lange JS, Lara M, Larin P, Leyhe M, Li CH, Li C, Li C, Li D, Li DM, Li F, Li G, Li HB, Li HJ, Li JC, Li K, Li K, Li L, Li PR, Li QJ, Li T, Li WD, Li WG, Li XL, Li XN, Li XQ, Li ZB, Liang H, Liang YF, Liang YT, Lin DX, Liu BJ, Liu CL, Liu CX, Liu FH, Liu F, Liu F, Liu HB, Liu HH, Liu HM, Liu J, Liu JP, Liu K, Liu KY, Liu PL, Liu Q, Liu SB, Liu X, Liu YB, Liu ZA, Liu Z, Liu Z, Loehner H, Lou XC, Lu GR, Lu HJ, Lu HL, Lu JG, Lu XR, Lu Y, Lu YP, Luo CL, Luo MX, Luo T, Luo XL, Lv M, Ma FC, Ma HL, Ma QM, Ma S, Ma T, Ma XY, Maas FE, Maggiora M, Malik QA, Mao YJ, Mao ZP, Messchendorp JG, Min J, Min TJ, Mitchell RE, Mo XH, Mo YJ, Moeini H, Morales Morales C, Moriya K, Muchnoi NY, Muramatsu H, Nefedov Y, Nikolaev IB, Ning Z, Nisar S, Niu XY, Olsen SL, Ouyang Q, Pacetti S, Pelizaeus M, Peng HP, Peters K, Ping JL, Ping RG, Poling R, Q N, Qi M, Qian S, Qiao CF, Qin LQ, Qin XS, Qin Y, Qin ZH, Qiu JF, Rashid KH, Redmer CF, Ripka M, Rong G, Ruan XD, Sarantsev A, Schoenning K, Schumann S, Shan W, Shao M, Shen CP, Shen XY, Sheng HY, Shepherd MR, Song WM, Song XY, Spataro S, Spruck B, Sun GX, Sun JF, Sun SS, Sun YJ, Sun YZ, Sun ZJ, Sun ZT, Tang CJ, Tang X, Tapan I, Thorndike EH, Toth D, Ullrich M, Uman I, Varner GS, Wang B, Wang D, Wang DY, Wang K, Wang LL, Wang LS, Wang M, Wang P, Wang PL, Wang QJ, Wang SG, Wang W, Wang XF, Wang YD, Wang YF, Wang YQ, Wang Z, Wang ZG, Wang ZH, Wang ZY, Wei DH, Wei JB, Weidenkaff P, Wen SP, Werner M, Wiedner U, Wolke M, Wu LH, Wu N, Wu Z, Xia LG, Xia Y, Xiao D, Xiao ZJ, Xie YG, Xiu QL, Xu GF, Xu L, Xu QJ, Xu QN, Xu XP, Xue Z, Yan L, Yan WB, Yan WC, Yan YH, Yang HX, Yang L, Yang Y, Yang YX, Ye H, Ye M, Ye MH, Yu BX, Yu CX, Yu HW, Yu JS, Yu SP, Yuan CZ, Yuan WL, Yuan Y, Zafar AA, Zallo A, Zang SL, Zeng Y, Zhang BX, Zhang BY, Zhang C, Zhang CB, Zhang CC, Zhang DH, Zhang HH, Zhang HY, Zhang JJ, Zhang JQ, Zhang JW, Zhang JY, Zhang JZ, Zhang SH, Zhang XJ, Zhang XY, Zhang Y, Zhang YH, Zhang ZH, Zhang ZP, Zhang ZY, Zhao G, Zhao JW, Zhao L, Zhao L, Zhao MG, Zhao Q, Zhao QW, Zhao SJ, Zhao TC, Zhao XH, Zhao YB, Zhao ZG, Zhemchugov A, Zheng B, Zheng JP, Zheng YH, Zhong B, Zhou L, Zhou L, Zhou X, Zhou XK, Zhou XR, Zhou XY, Zhu K, Zhu KJ, Zhu XL, Zhu YC, Zhu YS, Zhu ZA, Zhuang J, Zou BS, Zou JH. Observation of η'→π+ π π+ π- and η'→π+π- π0 π0. Phys Rev Lett 2014; 112:251801. [PMID: 25014804 DOI: 10.1103/physrevlett.112.251801] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2014] [Indexed: 06/03/2023]
Abstract
Using a sample of 1.3 × 10(9) J/ψ events collected with the BESIII detector, we report the first observation of η(')→π(+)π(-)π(+)π(-) and η(')→π(+)π(-)π(0)π(0). The measured branching fractions are B(η(')→π(+)π(-)π(+)π(-)) = [8.53 ± 0.69(stat.) ± 0.64(syst.)]×10(-5) and B(η(')→π(+)π(-)π(0) π(0)) = [1.82 ± 0.35(stat.) ± 0.18(syst.)] × 10(-4), which are consistent with theoretical predictions based on a combination of chiral perturbation theory and vector-meson dominance.
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Affiliation(s)
- M Ablikim
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M N Achasov
- G.I. Budker Institute of Nuclear Physics SB RAS (BINP), Novosibirsk 630090, Russia
| | - X C Ai
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - O Albayrak
- Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
| | - M Albrecht
- Bochum Ruhr-University, D-44780 Bochum, Germany
| | - D J Ambrose
- University of Rochester, Rochester, New York 14627, USA
| | - F F An
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Q An
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - J Z Bai
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | | | - Y Ban
- Peking University, Beijing 100871, People's Republic of China
| | - J V Bennett
- Indiana University, Bloomington, Indiana 47405, USA
| | - M Bertani
- INFN Laboratori Nazionali di Frascati, I-00044 Frascati, Italy
| | - J M Bian
- University of Minnesota, Minneapolis, Minnesota 55455, USA
| | - E Boger
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - O Bondarenko
- KVI, University of Groningen, NL-9747 AA Groningen, Netherlands
| | - I Boyko
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - S Braun
- Universitaet Giessen, D-35392 Giessen, Germany
| | - R A Briere
- Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
| | - H Cai
- Wuhan University, Wuhan 430072, People's Republic of China
| | - X Cai
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - O Cakir
- Ankara University, Dogol Caddesi, 06100 Tandogan, Ankara, Turkey
| | - A Calcaterra
- INFN Laboratori Nazionali di Frascati, I-00044 Frascati, Italy
| | - G F Cao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S A Cetin
- Dogus University, 34722 Istanbul, Turkey
| | - J F Chang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - G Chelkov
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - G Chen
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - H S Chen
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J C Chen
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M L Chen
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S J Chen
- Nanjing University, Nanjing 210093, People's Republic of China
| | - X Chen
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X R Chen
- Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Y B Chen
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - H P Cheng
- Huangshan College, Huangshan 245000, People's Republic of China
| | - X K Chu
- Peking University, Beijing 100871, People's Republic of China
| | - Y P Chu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | | | - H L Dai
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J P Dai
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - D Dedovich
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - Z Y Deng
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - A Denig
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - I Denysenko
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - M Destefanis
- University of Turin, I-10125 Turin, Italy and INFN, I-10125 Turin, Italy
| | - W M Ding
- Shandong University, Jinan 250100, People's Republic of China
| | - Y Ding
- Liaoning University, Shenyang 110036, People's Republic of China
| | - C Dong
- Nankai University, Tianjin 300071, People's Republic of China
| | - J Dong
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L Y Dong
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M Y Dong
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S X Du
- Zhengzhou University, Zhengzhou 450001, People's Republic of China
| | - J Z Fan
- Tsinghua University, Beijing 100084, People's Republic of China
| | - J Fang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S S Fang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y Fang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L Fava
- University of Eastern Piedmont, I-15121 Alessandria, Italy and INFN, I-10125 Turin, Italy
| | - C Q Feng
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - C D Fu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - O Fuks
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - Q Gao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y Gao
- Tsinghua University, Beijing 100084, People's Republic of China
| | - C Geng
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - K Goetzen
- GSI Helmholtzcentre for Heavy Ion Research GmbH, D-64291 Darmstadt, Germany
| | - W X Gong
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - W Gradl
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - M Greco
- University of Turin, I-10125 Turin, Italy and INFN, I-10125 Turin, Italy
| | - M H Gu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y T Gu
- GuangXi University, Nanning 530004, People's Republic of China
| | - Y H Guan
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - A Q Guo
- Nankai University, Tianjin 300071, People's Republic of China
| | - L B Guo
- Nanjing Normal University, Nanjing 210023, People's Republic of China
| | - T Guo
- Nanjing Normal University, Nanjing 210023, People's Republic of China
| | - Y P Guo
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - Y L Han
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - F A Harris
- University of Hawaii, Honolulu, Hawaii 96822, USA
| | - K L He
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M He
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z Y He
- Nankai University, Tianjin 300071, People's Republic of China
| | - T Held
- Bochum Ruhr-University, D-44780 Bochum, Germany
| | - Y K Heng
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z L Hou
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - C Hu
- Nanjing Normal University, Nanjing 210023, People's Republic of China
| | - H M Hu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J F Hu
- Universitaet Giessen, D-35392 Giessen, Germany
| | - T Hu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - G M Huang
- Central China Normal University, Wuhan 430079, People's Republic of China
| | - G S Huang
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - H P Huang
- Wuhan University, Wuhan 430072, People's Republic of China
| | - J S Huang
- Henan Normal University, Xinxiang 453007, People's Republic of China
| | - L Huang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X T Huang
- Shandong University, Jinan 250100, People's Republic of China
| | - Y Huang
- Nanjing University, Nanjing 210093, People's Republic of China
| | - T Hussain
- University of the Punjab, Lahore 54590, Pakistan
| | - C S Ji
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Q Ji
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Q P Ji
- Nankai University, Tianjin 300071, People's Republic of China
| | - X B Ji
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X L Ji
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L L Jiang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L W Jiang
- Wuhan University, Wuhan 430072, People's Republic of China
| | - X S Jiang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J B Jiao
- Shandong University, Jinan 250100, People's Republic of China
| | - Z Jiao
- Huangshan College, Huangshan 245000, People's Republic of China
| | - D P Jin
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S Jin
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - T Johansson
- Uppsala University, Box 516, SE-75120 Uppsala, Sweden
| | | | - X L Kang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X S Kang
- Nankai University, Tianjin 300071, People's Republic of China
| | - M Kavatsyuk
- KVI, University of Groningen, NL-9747 AA Groningen, Netherlands
| | - B Kloss
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - B Kopf
- Bochum Ruhr-University, D-44780 Bochum, Germany
| | - M Kornicer
- University of Hawaii, Honolulu, Hawaii 96822, USA
| | - W Kuehn
- Universitaet Giessen, D-35392 Giessen, Germany
| | - A Kupsc
- Uppsala University, Box 516, SE-75120 Uppsala, Sweden
| | - W Lai
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J S Lange
- Universitaet Giessen, D-35392 Giessen, Germany
| | - M Lara
- Indiana University, Bloomington, Indiana 47405, USA
| | - P Larin
- Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - M Leyhe
- Bochum Ruhr-University, D-44780 Bochum, Germany
| | - C H Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Cheng Li
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Cui Li
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - D Li
- Hunan University, Changsha 410082, People's Republic of China
| | - D M Li
- Zhengzhou University, Zhengzhou 450001, People's Republic of China
| | - F Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - G Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - H B Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - H J Li
- Henan Normal University, Xinxiang 453007, People's Republic of China
| | - J C Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - K Li
- Hangzhou Normal University, Hangzhou 310036, People's Republic of China
| | - K Li
- Shandong University, Jinan 250100, People's Republic of China
| | - Lei Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - P R Li
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Q J Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - T Li
- Shandong University, Jinan 250100, People's Republic of China
| | - W D Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - W G Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X L Li
- Shandong University, Jinan 250100, People's Republic of China
| | - X N Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X Q Li
- Nankai University, Tianjin 300071, People's Republic of China
| | - Z B Li
- Sun Yat-Sen University, Guangzhou 510275, People's Republic of China
| | - H Liang
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Y F Liang
- Sichuan University, Chengdu 610064, People's Republic of China
| | - Y T Liang
- Universitaet Giessen, D-35392 Giessen, Germany
| | - D X Lin
- Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - B J Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - C L Liu
- Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
| | - C X Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - F H Liu
- Shanxi University, Taiyuan 030006, People's Republic of China
| | - Fang Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Feng Liu
- Central China Normal University, Wuhan 430079, People's Republic of China
| | - H B Liu
- GuangXi University, Nanning 530004, People's Republic of China
| | - H H Liu
- Henan University of Science and Technology, Luoyang 471003, People's Republic of China
| | - H M Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J P Liu
- Wuhan University, Wuhan 430072, People's Republic of China
| | - K Liu
- Tsinghua University, Beijing 100084, People's Republic of China
| | - K Y Liu
- Liaoning University, Shenyang 110036, People's Republic of China
| | - P L Liu
- Shandong University, Jinan 250100, People's Republic of China
| | - Q Liu
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - S B Liu
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - X Liu
- Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Y B Liu
- Nankai University, Tianjin 300071, People's Republic of China
| | - Z A Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Zhiqiang Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Zhiqing Liu
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - H Loehner
- KVI, University of Groningen, NL-9747 AA Groningen, Netherlands
| | - X C Lou
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - G R Lu
- Henan Normal University, Xinxiang 453007, People's Republic of China
| | - H J Lu
- Huangshan College, Huangshan 245000, People's Republic of China
| | - H L Lu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J G Lu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X R Lu
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Y Lu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y P Lu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - C L Luo
- Nanjing Normal University, Nanjing 210023, People's Republic of China
| | - M X Luo
- Zhejiang University, Hangzhou 310027, People's Republic of China
| | - T Luo
- University of Hawaii, Honolulu, Hawaii 96822, USA
| | - X L Luo
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M Lv
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - F C Ma
- Liaoning University, Shenyang 110036, People's Republic of China
| | - H L Ma
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Q M Ma
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S Ma
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - T Ma
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X Y Ma
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - F E Maas
- Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - M Maggiora
- University of Turin, I-10125 Turin, Italy and INFN, I-10125 Turin, Italy
| | - Q A Malik
- University of the Punjab, Lahore 54590, Pakistan
| | - Y J Mao
- Peking University, Beijing 100871, People's Republic of China
| | - Z P Mao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | | | - J Min
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - T J Min
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - R E Mitchell
- Indiana University, Bloomington, Indiana 47405, USA
| | - X H Mo
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y J Mo
- Central China Normal University, Wuhan 430079, People's Republic of China
| | - H Moeini
- KVI, University of Groningen, NL-9747 AA Groningen, Netherlands
| | - C Morales Morales
- Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - K Moriya
- Indiana University, Bloomington, Indiana 47405, USA
| | - N Yu Muchnoi
- G.I. Budker Institute of Nuclear Physics SB RAS (BINP), Novosibirsk 630090, Russia
| | - H Muramatsu
- University of Minnesota, Minneapolis, Minnesota 55455, USA
| | - Y Nefedov
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - I B Nikolaev
- G.I. Budker Institute of Nuclear Physics SB RAS (BINP), Novosibirsk 630090, Russia
| | - Z Ning
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S Nisar
- COMSATS Institute of Information Technology, Lahore, Defence Road, Off Raiwind Road, Lahore 54000, Pakistan
| | - X Y Niu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S L Olsen
- Seoul National University, Seoul 151-747, Korea
| | - Q Ouyang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S Pacetti
- INFN and University of Perugia, I-06100 Perugia, Italy
| | - M Pelizaeus
- Bochum Ruhr-University, D-44780 Bochum, Germany
| | - H P Peng
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - K Peters
- GSI Helmholtzcentre for Heavy Ion Research GmbH, D-64291 Darmstadt, Germany
| | - J L Ping
- Nanjing Normal University, Nanjing 210023, People's Republic of China
| | - R G Ping
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - R Poling
- University of Minnesota, Minneapolis, Minnesota 55455, USA
| | - N Q
- Wuhan University, Wuhan 430072, People's Republic of China
| | - M Qi
- Nanjing University, Nanjing 210093, People's Republic of China
| | - S Qian
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - C F Qiao
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - L Q Qin
- Shandong University, Jinan 250100, People's Republic of China
| | - X S Qin
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y Qin
- Peking University, Beijing 100871, People's Republic of China
| | - Z H Qin
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J F Qiu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - K H Rashid
- University of the Punjab, Lahore 54590, Pakistan
| | - C F Redmer
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - M Ripka
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - G Rong
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X D Ruan
- GuangXi University, Nanning 530004, People's Republic of China
| | - A Sarantsev
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - K Schoenning
- Uppsala University, Box 516, SE-75120 Uppsala, Sweden
| | - S Schumann
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - W Shan
- Peking University, Beijing 100871, People's Republic of China
| | - M Shao
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - C P Shen
- Beihang University, Beijing 100191, People's Republic of China
| | - X Y Shen
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - H Y Sheng
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M R Shepherd
- Indiana University, Bloomington, Indiana 47405, USA
| | - W M Song
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X Y Song
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S Spataro
- University of Turin, I-10125 Turin, Italy and INFN, I-10125 Turin, Italy
| | - B Spruck
- Universitaet Giessen, D-35392 Giessen, Germany
| | - G X Sun
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J F Sun
- Henan Normal University, Xinxiang 453007, People's Republic of China
| | - S S Sun
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y J Sun
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Y Z Sun
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z J Sun
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z T Sun
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - C J Tang
- Sichuan University, Chengdu 610064, People's Republic of China
| | - X Tang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - I Tapan
- Uludag University, 16059 Bursa, Turkey
| | - E H Thorndike
- University of Rochester, Rochester, New York 14627, USA
| | - D Toth
- University of Minnesota, Minneapolis, Minnesota 55455, USA
| | - M Ullrich
- Universitaet Giessen, D-35392 Giessen, Germany
| | - I Uman
- Dogus University, 34722 Istanbul, Turkey
| | - G S Varner
- University of Hawaii, Honolulu, Hawaii 96822, USA
| | - B Wang
- Nankai University, Tianjin 300071, People's Republic of China
| | - D Wang
- Peking University, Beijing 100871, People's Republic of China
| | - D Y Wang
- Peking University, Beijing 100871, People's Republic of China
| | - K Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L L Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L S Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M Wang
- Shandong University, Jinan 250100, People's Republic of China
| | - P Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - P L Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Q J Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S G Wang
- Peking University, Beijing 100871, People's Republic of China
| | - W Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X F Wang
- Tsinghua University, Beijing 100084, People's Republic of China
| | - Y D Wang
- INFN Laboratori Nazionali di Frascati, I-00044 Frascati, Italy
| | - Y F Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y Q Wang
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - Z Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z G Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z H Wang
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Z Y Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - D H Wei
- Guangxi Normal University, Guilin 541004, People's Republic of China
| | - J B Wei
- Peking University, Beijing 100871, People's Republic of China
| | - P Weidenkaff
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - S P Wen
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M Werner
- Universitaet Giessen, D-35392 Giessen, Germany
| | - U Wiedner
- Bochum Ruhr-University, D-44780 Bochum, Germany
| | - M Wolke
- Uppsala University, Box 516, SE-75120 Uppsala, Sweden
| | - L H Wu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - N Wu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z Wu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L G Xia
- Tsinghua University, Beijing 100084, People's Republic of China
| | - Y Xia
- Hunan University, Changsha 410082, People's Republic of China
| | - D Xiao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z J Xiao
- Nanjing Normal University, Nanjing 210023, People's Republic of China
| | - Y G Xie
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Q L Xiu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - G F Xu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L Xu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Q J Xu
- Hangzhou Normal University, Hangzhou 310036, People's Republic of China
| | - Q N Xu
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - X P Xu
- Soochow University, Suzhou 215006, People's Republic of China
| | - Z Xue
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L Yan
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - W B Yan
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - W C Yan
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Y H Yan
- Hunan University, Changsha 410082, People's Republic of China
| | - H X Yang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L Yang
- Wuhan University, Wuhan 430072, People's Republic of China
| | - Y Yang
- Central China Normal University, Wuhan 430079, People's Republic of China
| | - Y X Yang
- Guangxi Normal University, Guilin 541004, People's Republic of China
| | - H Ye
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M Ye
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M H Ye
- China Center of Advanced Science and Technology, Beijing 100190, People's Republic of China
| | - B X Yu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - C X Yu
- Nankai University, Tianjin 300071, People's Republic of China
| | - H W Yu
- Peking University, Beijing 100871, People's Republic of China
| | - J S Yu
- Lanzhou University, Lanzhou 730000, People's Republic of China
| | - S P Yu
- Shandong University, Jinan 250100, People's Republic of China
| | - C Z Yuan
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - W L Yuan
- Nanjing University, Nanjing 210093, People's Republic of China
| | - Y Yuan
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - A A Zafar
- University of the Punjab, Lahore 54590, Pakistan
| | - A Zallo
- INFN Laboratori Nazionali di Frascati, I-00044 Frascati, Italy
| | - S L Zang
- Nanjing University, Nanjing 210093, People's Republic of China
| | - Y Zeng
- Hunan University, Changsha 410082, People's Republic of China
| | - B X Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - B Y Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - C Zhang
- Nanjing University, Nanjing 210093, People's Republic of China
| | - C B Zhang
- Hunan University, Changsha 410082, People's Republic of China
| | - C C Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - D H Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - H H Zhang
- Sun Yat-Sen University, Guangzhou 510275, People's Republic of China
| | - H Y Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J J Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J Q Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J W Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J Y Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J Z Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S H Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X J Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X Y Zhang
- Shandong University, Jinan 250100, People's Republic of China
| | - Y Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y H Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z H Zhang
- Central China Normal University, Wuhan 430079, People's Republic of China
| | - Z P Zhang
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Z Y Zhang
- Wuhan University, Wuhan 430072, People's Republic of China
| | - G Zhao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J W Zhao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Lei Zhao
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Ling Zhao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M G Zhao
- Nankai University, Tianjin 300071, People's Republic of China
| | - Q Zhao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Q W Zhao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S J Zhao
- Zhengzhou University, Zhengzhou 450001, People's Republic of China
| | - T C Zhao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X H Zhao
- Nanjing University, Nanjing 210093, People's Republic of China
| | - Y B Zhao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z G Zhao
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - A Zhemchugov
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - B Zheng
- University of South China, Hengyang 421001, People's Republic of China
| | - J P Zheng
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y H Zheng
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - B Zhong
- Nanjing Normal University, Nanjing 210023, People's Republic of China
| | - L Zhou
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Li Zhou
- Nankai University, Tianjin 300071, People's Republic of China
| | - X Zhou
- Wuhan University, Wuhan 430072, People's Republic of China
| | - X K Zhou
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - X R Zhou
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - X Y Zhou
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - K Zhu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - K J Zhu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X L Zhu
- Tsinghua University, Beijing 100084, People's Republic of China
| | - Y C Zhu
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Y S Zhu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z A Zhu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J Zhuang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - B S Zou
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J H Zou
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
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Ablikim M, Achasov MN, Albayrak O, Ambrose DJ, An FF, An Q, Bai JZ, Baldini Ferroli R, Ban Y, Becker J, Bennett JV, Bertani M, Bian JM, Boger E, Bondarenko O, Boyko I, Braun S, Briere RA, Bytev V, Cai H, Cai X, Cakir O, Calcaterra A, Cao GF, Cetin SA, Chang JF, Chelkov G, Chen G, Chen HS, Chen JC, Chen ML, Chen SJ, Chen XR, Chen YB, Cheng HP, Chu YP, Cronin-Hennessy D, Dai HL, Dai JP, Dedovich D, Deng ZY, Denig A, Denysenko I, Destefanis M, Ding WM, Ding Y, Dong LY, Dong MY, Du SX, Fang J, Fang SS, Fava L, Feng CQ, Friedel P, Fu CD, Fu JL, Fuks O, Gao Y, Geng C, Goetzen K, Gong WX, Gradl W, Greco M, Gu MH, Gu YT, Guan YH, Guo AQ, Guo LB, Guo T, Guo YP, Han YL, Harris FA, He KL, He M, He ZY, Held T, Heng YK, Hou ZL, Hu C, Hu HM, Hu JF, Hu T, Huang GM, Huang GS, Huang JS, Huang L, Huang XT, Huang Y, Hussain T, Ji CS, Ji Q, Ji QP, Ji XB, Ji XL, Jiang LL, Jiang XS, Jiao JB, Jiao Z, Jin DP, Jin S, Jing FF, Kalantar-Nayestanaki N, Kavatsyuk M, Kloss B, Kopf B, Kornicer M, Kuehn W, Lai W, Lange JS, Lara M, Larin P, Leyhe M, Li CH, Li C, Li C, Li DM, Li F, Li G, Li HB, Li JC, Li K, Li L, Li PR, Li QJ, Li WD, Li WG, Li XL, Li XN, Li XQ, Li XR, Li ZB, Liang H, Liang YF, Liang YT, Liao GR, Liao XT, Lin DX, Liu BJ, Liu CL, Liu CX, Liu FH, Liu F, Liu F, Liu H, Liu HB, Liu HH, Liu HM, Liu HW, Liu JP, Liu K, Liu KY, Liu LD, Liu PL, Liu Q, Liu SB, Liu X, Liu YB, Liu ZA, Liu Z, Liu Z, Loehner H, Lou XC, Lu GR, Lu HJ, Lu JG, Lu XR, Lu YP, Luo CL, Luo MX, Luo T, Luo XL, Lv M, Ma FC, Ma HL, Ma QM, Ma S, Ma T, Ma XY, Maas FE, Maggiora M, Malik QA, Mao YJ, Mao ZP, Messchendorp JG, Min J, Min TJ, Mitchell RE, Mo XH, Moeini H, Morales Morales C, Moriya K, Muchnoi NY, Muramatsu H, Nefedov Y, Nikolaev IB, Ning Z, Olsen SL, Ouyang Q, Pacetti S, Park JW, Pelizaeus M, Peng HP, Peters K, Ping JL, Ping RG, Poling R, Prencipe E, Qi M, Qian S, Qiao CF, Qin LQ, Qin XS, Qin Y, Qin ZH, Qiu JF, Rashid KH, Redmer CF, Rong G, Ruan XD, Sarantsev A, Shao M, Shen CP, Shen XY, Sheng HY, Shepherd MR, Song WM, Song XY, Spataro S, Spruck B, Sun DH, Sun GX, Sun JF, Sun SS, Sun YJ, Sun YZ, Sun ZJ, Sun ZT, Tang CJ, Tang X, Tapan I, Thorndike EH, Toth D, Ullrich M, Uman I, Varner GS, Wang B, Wang D, Wang DY, Wang K, Wang LL, Wang LS, Wang M, Wang P, Wang PL, Wang QJ, Wang SG, Wang XF, Wang XL, Wang YD, Wang YF, Wang YQ, Wang Z, Wang ZG, Wang ZY, Wei DH, Wei JB, Weidenkaff P, Wen QG, Wen SP, Werner M, Wiedner U, Wu LH, Wu N, Wu SX, Wu W, Wu Z, Xia LG, Xia YX, Xiao ZJ, Xie YG, Xiu QL, Xu GF, Xu QJ, Xu QN, Xu XP, Xu ZR, Xue Z, Yan L, Yan WB, Yan YH, Yang HX, Yang Y, Yang YX, Ye H, Ye M, Ye MH, Yu BX, Yu CX, Yu HW, Yu JS, Yu SP, Yuan CZ, Yuan Y, Zafar AA, Zallo A, Zang SL, Zeng Y, Zhang BX, Zhang BY, Zhang C, Zhang CC, Zhang DH, Zhang HH, Zhang HY, Zhang L, Zhang JQ, Zhang JW, Zhang JY, Zhang JZ, Zhang R, Zhang SH, Zhang XJ, Zhang XY, Zhang Y, Zhang YH, Zhang ZH, Zhang ZP, Zhang ZY, Zhao G, Zhao HS, Zhao JW, Zhao L, Zhao L, Zhao MG, Zhao Q, Zhao SJ, Zhao TC, Zhao XH, Zhao YB, Zhao ZG, Zhemchugov A, Zheng B, Zheng JP, Zheng YH, Zhong B, Zhou L, Zhou X, Zhou XK, Zhou XR, Zhu C, Zhu K, Zhu KJ, Zhu SH, Zhu XL, Zhu YC, Zhu YS, Zhu ZA, Zhuang J, Zou BS, Zou JH. Observation of a charged charmoniumlike structure in e+ e- → (D* D*)± π∓ at √s = 4.26 GeV. Phys Rev Lett 2014; 112:132001. [PMID: 24745407 DOI: 10.1103/physrevlett.112.132001] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2013] [Indexed: 06/03/2023]
Abstract
We study the process e+ e- →(D* D*)± π∓ at a center-of-mass energy of 4.26 GeV using a 827 pb(-1) data sample obtained with the BESIII detector at the Beijing Electron Positron Collider. Based on a partial reconstruction technique, the Born cross section is measured to be (137±9±15) pb. We observe a structure near the (D* D*)± threshold in the π∓ recoil mass spectrum, which we denote as the Zc±(4025). The measured mass and width of the structure are (4026.3±2.6±3.7) MeV/c2 and (24.8±5.6±7.7) MeV, respectively. Its production ratio σ(e+ e- → Zc±(4025)π∓ → (D* D*)± π∓)/σ(e+ e- → (D* D*)± π∓) is determined to be 0.65±0.09±0.06. The first uncertainties are statistical and the second are systematic.
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Affiliation(s)
- M Ablikim
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M N Achasov
- G. I. Budker Institute of Nuclear Physics SB RAS (BINP), Novosibirsk 630090, Russia
| | - O Albayrak
- Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
| | - D J Ambrose
- University of Rochester, Rochester, New York 14627, USA
| | - F F An
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Q An
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - J Z Bai
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | | | - Y Ban
- Peking University, Beijing 100871, People's Republic of China
| | - J Becker
- Bochum Ruhr-University, D-44780 Bochum, Germany
| | - J V Bennett
- Indiana University, Bloomington, Indiana 47405, USA
| | - M Bertani
- INFN Laboratori Nazionali di Frascati, I-00044, Frascati, Italy
| | - J M Bian
- University of Minnesota, Minneapolis, Minnesota 55455, USA
| | - E Boger
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - O Bondarenko
- KVI, University of Groningen, NL-9747 AA Groningen, The Netherlands
| | - I Boyko
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - S Braun
- Universitaet Giessen, D-35392 Giessen, Germany
| | - R A Briere
- Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
| | - V Bytev
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - H Cai
- Wuhan University, Wuhan 430072, People's Republic of China
| | - X Cai
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - O Cakir
- Ankara University, Dogol Caddesi, 06100 Tandogan, Ankara, Turkey
| | - A Calcaterra
- INFN Laboratori Nazionali di Frascati, I-00044, Frascati, Italy
| | - G F Cao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S A Cetin
- Dogus University, 34722 Istanbul, Turkey
| | - J F Chang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - G Chelkov
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - G Chen
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - H S Chen
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J C Chen
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M L Chen
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S J Chen
- Nanjing University, Nanjing 210093, People's Republic of China
| | - X R Chen
- Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Y B Chen
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - H P Cheng
- Huangshan College, Huangshan 245000, People's Republic of China
| | - Y P Chu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | | | - H L Dai
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J P Dai
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - D Dedovich
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - Z Y Deng
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - A Denig
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - I Denysenko
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - M Destefanis
- University of Turin, I-10125 Turin, Italy and INFN, I-10125 Turin, Italy
| | - W M Ding
- Shandong University, Jinan 250100, People's Republic of China
| | - Y Ding
- Liaoning University, Shenyang 110036, People's Republic of China
| | - L Y Dong
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M Y Dong
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S X Du
- Zhengzhou University, Zhengzhou 450001, People's Republic of China
| | - J Fang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S S Fang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L Fava
- University of Eastern Piedmont, I-15121 Alessandria, Italy and INFN, I-10125 Turin, Italy
| | - C Q Feng
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - P Friedel
- Bochum Ruhr-University, D-44780 Bochum, Germany
| | - C D Fu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J L Fu
- Nanjing University, Nanjing 210093, People's Republic of China
| | - O Fuks
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - Y Gao
- Tsinghua University, Beijing 100084, People's Republic of China
| | - C Geng
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - K Goetzen
- GSI Helmholtzcentre for Heavy Ion Research GmbH, D-64291 Darmstadt, Germany
| | - W X Gong
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - W Gradl
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - M Greco
- University of Turin, I-10125 Turin, Italy and INFN, I-10125 Turin, Italy
| | - M H Gu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y T Gu
- GuangXi University, Nanning 530004, People's Republic of China
| | - Y H Guan
- Institute of High Energy Physics, Beijing 100049, People's Republic of China and University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - A Q Guo
- Nankai University, Tianjin 300071, People's Republic of China
| | - L B Guo
- Nanjing Normal University, Nanjing 210023, People's Republic of China
| | - T Guo
- Nanjing Normal University, Nanjing 210023, People's Republic of China
| | - Y P Guo
- Nankai University, Tianjin 300071, People's Republic of China
| | - Y L Han
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - F A Harris
- University of Hawaii, Honolulu, Hawaii 96822, USA
| | - K L He
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M He
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z Y He
- Nankai University, Tianjin 300071, People's Republic of China
| | - T Held
- Bochum Ruhr-University, D-44780 Bochum, Germany
| | - Y K Heng
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z L Hou
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - C Hu
- Nanjing Normal University, Nanjing 210023, People's Republic of China
| | - H M Hu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J F Hu
- Universitaet Giessen, D-35392 Giessen, Germany
| | - T Hu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - G M Huang
- Central China Normal University, Wuhan 430079, People's Republic of China
| | - G S Huang
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - J S Huang
- Henan Normal University, Xinxiang 453007, People's Republic of China
| | - L Huang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X T Huang
- Shandong University, Jinan 250100, People's Republic of China
| | - Y Huang
- Nanjing University, Nanjing 210093, People's Republic of China
| | - T Hussain
- University of the Punjab, Lahore-54590, Pakistan
| | - C S Ji
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Q Ji
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Q P Ji
- Nankai University, Tianjin 300071, People's Republic of China
| | - X B Ji
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X L Ji
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L L Jiang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X S Jiang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J B Jiao
- Shandong University, Jinan 250100, People's Republic of China
| | - Z Jiao
- Huangshan College, Huangshan 245000, People's Republic of China
| | - D P Jin
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S Jin
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - F F Jing
- Tsinghua University, Beijing 100084, People's Republic of China
| | | | - M Kavatsyuk
- KVI, University of Groningen, NL-9747 AA Groningen, The Netherlands
| | - B Kloss
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - B Kopf
- Bochum Ruhr-University, D-44780 Bochum, Germany
| | - M Kornicer
- University of Hawaii, Honolulu, Hawaii 96822, USA
| | - W Kuehn
- Universitaet Giessen, D-35392 Giessen, Germany
| | - W Lai
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J S Lange
- Universitaet Giessen, D-35392 Giessen, Germany
| | - M Lara
- Indiana University, Bloomington, Indiana 47405, USA
| | - P Larin
- Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - M Leyhe
- Bochum Ruhr-University, D-44780 Bochum, Germany
| | - C H Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Cheng Li
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Cui Li
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - D M Li
- Zhengzhou University, Zhengzhou 450001, People's Republic of China
| | - F Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - G Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - H B Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J C Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - K Li
- Hangzhou Normal University, Hangzhou 310036, People's Republic of China
| | - Lei Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - P R Li
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Q J Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - W D Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - W G Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X L Li
- Shandong University, Jinan 250100, People's Republic of China
| | - X N Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X Q Li
- Nankai University, Tianjin 300071, People's Republic of China
| | - X R Li
- Seoul National University, Seoul 151-747, Korea
| | - Z B Li
- Sun Yat-Sen University, Guangzhou 510275, People's Republic of China
| | - H Liang
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Y F Liang
- Sichuan University, Chengdu 610064, People's Republic of China
| | - Y T Liang
- Universitaet Giessen, D-35392 Giessen, Germany
| | - G R Liao
- Tsinghua University, Beijing 100084, People's Republic of China
| | - X T Liao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - D X Lin
- Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - B J Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - C L Liu
- Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
| | - C X Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - F H Liu
- Shanxi University, Taiyuan 030006, People's Republic of China
| | - Fang Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Feng Liu
- Central China Normal University, Wuhan 430079, People's Republic of China
| | - H Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - H B Liu
- GuangXi University, Nanning 530004, People's Republic of China
| | - H H Liu
- Henan University of Science and Technology, Luoyang 471003, People's Republic of China
| | - H M Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - H W Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J P Liu
- Wuhan University, Wuhan 430072, People's Republic of China
| | - K Liu
- Tsinghua University, Beijing 100084, People's Republic of China
| | - K Y Liu
- Liaoning University, Shenyang 110036, People's Republic of China
| | - L D Liu
- Peking University, Beijing 100871, People's Republic of China
| | - P L Liu
- Shandong University, Jinan 250100, People's Republic of China
| | - Q Liu
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - S B Liu
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - X Liu
- Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Y B Liu
- Nankai University, Tianjin 300071, People's Republic of China
| | - Z A Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Zhiqiang Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Zhiqing Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - H Loehner
- KVI, University of Groningen, NL-9747 AA Groningen, The Netherlands
| | - X C Lou
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - G R Lu
- Henan Normal University, Xinxiang 453007, People's Republic of China
| | - H J Lu
- Huangshan College, Huangshan 245000, People's Republic of China
| | - J G Lu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X R Lu
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Y P Lu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - C L Luo
- Nanjing Normal University, Nanjing 210023, People's Republic of China
| | - M X Luo
- Zhejiang University, Hangzhou 310027, People's Republic of China
| | - T Luo
- University of Hawaii, Honolulu, Hawaii 96822, USA
| | - X L Luo
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M Lv
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - F C Ma
- Liaoning University, Shenyang 110036, People's Republic of China
| | - H L Ma
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Q M Ma
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S Ma
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - T Ma
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X Y Ma
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - F E Maas
- Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - M Maggiora
- University of Turin, I-10125 Turin, Italy and INFN, I-10125 Turin, Italy
| | - Q A Malik
- University of the Punjab, Lahore-54590, Pakistan
| | - Y J Mao
- Peking University, Beijing 100871, People's Republic of China
| | - Z P Mao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J G Messchendorp
- KVI, University of Groningen, NL-9747 AA Groningen, The Netherlands
| | - J Min
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - T J Min
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - R E Mitchell
- Indiana University, Bloomington, Indiana 47405, USA
| | - X H Mo
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - H Moeini
- KVI, University of Groningen, NL-9747 AA Groningen, The Netherlands
| | - C Morales Morales
- Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - K Moriya
- Indiana University, Bloomington, Indiana 47405, USA
| | - N Yu Muchnoi
- G. I. Budker Institute of Nuclear Physics SB RAS (BINP), Novosibirsk 630090, Russia
| | - H Muramatsu
- University of Rochester, Rochester, New York 14627, USA
| | - Y Nefedov
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - I B Nikolaev
- G. I. Budker Institute of Nuclear Physics SB RAS (BINP), Novosibirsk 630090, Russia
| | - Z Ning
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S L Olsen
- Seoul National University, Seoul 151-747, Korea
| | - Q Ouyang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S Pacetti
- INFN and University of Perugia, I-06100, Perugia, Italy
| | - J W Park
- University of Hawaii, Honolulu, Hawaii 96822, USA
| | - M Pelizaeus
- Bochum Ruhr-University, D-44780 Bochum, Germany
| | - H P Peng
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - K Peters
- GSI Helmholtzcentre for Heavy Ion Research GmbH, D-64291 Darmstadt, Germany
| | - J L Ping
- Nanjing Normal University, Nanjing 210023, People's Republic of China
| | - R G Ping
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - R Poling
- University of Minnesota, Minneapolis, Minnesota 55455, USA
| | - E Prencipe
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - M Qi
- Nanjing University, Nanjing 210093, People's Republic of China
| | - S Qian
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - C F Qiao
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - L Q Qin
- Shandong University, Jinan 250100, People's Republic of China
| | - X S Qin
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y Qin
- Peking University, Beijing 100871, People's Republic of China
| | - Z H Qin
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J F Qiu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - K H Rashid
- University of the Punjab, Lahore-54590, Pakistan
| | - C F Redmer
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - G Rong
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X D Ruan
- GuangXi University, Nanning 530004, People's Republic of China
| | - A Sarantsev
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - M Shao
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - C P Shen
- Beihang University, Beijing 100191, People's Republic of China
| | - X Y Shen
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - H Y Sheng
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M R Shepherd
- Indiana University, Bloomington, Indiana 47405, USA
| | - W M Song
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X Y Song
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S Spataro
- University of Turin, I-10125 Turin, Italy and INFN, I-10125 Turin, Italy
| | - B Spruck
- Universitaet Giessen, D-35392 Giessen, Germany
| | - D H Sun
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - G X Sun
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J F Sun
- Henan Normal University, Xinxiang 453007, People's Republic of China
| | - S S Sun
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y J Sun
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Y Z Sun
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z J Sun
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z T Sun
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - C J Tang
- Sichuan University, Chengdu 610064, People's Republic of China
| | - X Tang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - I Tapan
- Uludag University, 16059 Bursa, Turkey
| | - E H Thorndike
- University of Rochester, Rochester, New York 14627, USA
| | - D Toth
- University of Minnesota, Minneapolis, Minnesota 55455, USA
| | - M Ullrich
- Universitaet Giessen, D-35392 Giessen, Germany
| | - I Uman
- Dogus University, 34722 Istanbul, Turkey
| | - G S Varner
- University of Hawaii, Honolulu, Hawaii 96822, USA
| | - B Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - D Wang
- Peking University, Beijing 100871, People's Republic of China
| | - D Y Wang
- Peking University, Beijing 100871, People's Republic of China
| | - K Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L L Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L S Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M Wang
- Shandong University, Jinan 250100, People's Republic of China
| | - P Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - P L Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Q J Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S G Wang
- Peking University, Beijing 100871, People's Republic of China
| | - X F Wang
- Tsinghua University, Beijing 100084, People's Republic of China
| | - X L Wang
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Y D Wang
- INFN Laboratori Nazionali di Frascati, I-00044, Frascati, Italy
| | - Y F Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y Q Wang
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - Z Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z G Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z Y Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - D H Wei
- Guangxi Normal University, Guilin 541004, People's Republic of China
| | - J B Wei
- Peking University, Beijing 100871, People's Republic of China
| | - P Weidenkaff
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - Q G Wen
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - S P Wen
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M Werner
- Universitaet Giessen, D-35392 Giessen, Germany
| | - U Wiedner
- Bochum Ruhr-University, D-44780 Bochum, Germany
| | - L H Wu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - N Wu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S X Wu
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - W Wu
- Nankai University, Tianjin 300071, People's Republic of China
| | - Z Wu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L G Xia
- Tsinghua University, Beijing 100084, People's Republic of China
| | - Y X Xia
- Hunan University, Changsha 410082, People's Republic of China
| | - Z J Xiao
- Nanjing Normal University, Nanjing 210023, People's Republic of China
| | - Y G Xie
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Q L Xiu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - G F Xu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Q J Xu
- Hangzhou Normal University, Hangzhou 310036, People's Republic of China
| | - Q N Xu
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - X P Xu
- Soochow University, Suzhou 215006, People's Republic of China
| | - Z R Xu
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Z Xue
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L Yan
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - W B Yan
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Y H Yan
- Hunan University, Changsha 410082, People's Republic of China
| | - H X Yang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y Yang
- Central China Normal University, Wuhan 430079, People's Republic of China
| | - Y X Yang
- Guangxi Normal University, Guilin 541004, People's Republic of China
| | - H Ye
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M Ye
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M H Ye
- China Center of Advanced Science and Technology, Beijing 100190, People's Republic of China
| | - B X Yu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - C X Yu
- Nankai University, Tianjin 300071, People's Republic of China
| | - H W Yu
- Peking University, Beijing 100871, People's Republic of China
| | - J S Yu
- Lanzhou University, Lanzhou 730000, People's Republic of China
| | - S P Yu
- Shandong University, Jinan 250100, People's Republic of China
| | - C Z Yuan
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y Yuan
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - A A Zafar
- University of the Punjab, Lahore-54590, Pakistan
| | - A Zallo
- INFN Laboratori Nazionali di Frascati, I-00044, Frascati, Italy
| | - S L Zang
- Nanjing University, Nanjing 210093, People's Republic of China
| | - Y Zeng
- Hunan University, Changsha 410082, People's Republic of China
| | - B X Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - B Y Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - C Zhang
- Nanjing University, Nanjing 210093, People's Republic of China
| | - C C Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - D H Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - H H Zhang
- Sun Yat-Sen University, Guangzhou 510275, People's Republic of China
| | - H Y Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J Q Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J W Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J Y Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J Z Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - R Zhang
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - S H Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X J Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X Y Zhang
- Shandong University, Jinan 250100, People's Republic of China
| | - Y Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y H Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z H Zhang
- Central China Normal University, Wuhan 430079, People's Republic of China
| | - Z P Zhang
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Z Y Zhang
- Wuhan University, Wuhan 430072, People's Republic of China
| | - G Zhao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - H S Zhao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J W Zhao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Lei Zhao
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Ling Zhao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M G Zhao
- Nankai University, Tianjin 300071, People's Republic of China
| | - Q Zhao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S J Zhao
- Zhengzhou University, Zhengzhou 450001, People's Republic of China
| | - T C Zhao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X H Zhao
- Nanjing University, Nanjing 210093, People's Republic of China
| | - Y B Zhao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z G Zhao
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - A Zhemchugov
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - B Zheng
- University of South China, Hengyang 421001, People's Republic of China
| | - J P Zheng
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y H Zheng
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - B Zhong
- Nanjing Normal University, Nanjing 210023, People's Republic of China
| | - L Zhou
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X Zhou
- Wuhan University, Wuhan 430072, People's Republic of China
| | - X K Zhou
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - X R Zhou
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - C Zhu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - K Zhu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - K J Zhu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S H Zhu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X L Zhu
- Tsinghua University, Beijing 100084, People's Republic of China
| | - Y C Zhu
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Y S Zhu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z A Zhu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J Zhuang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - B S Zou
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J H Zou
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
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Ablikim M, Achasov MN, Ai XC, Albayrak O, Ambrose DJ, An FF, An Q, Bai JZ, Baldini Ferroli R, Ban Y, Bennett JV, Bertani M, Bian JM, Boger E, Bondarenko O, Boyko I, Braun S, Briere RA, Cai H, Cai X, Cakir O, Calcaterra A, Cao GF, Cetin SA, Chang JF, Chelkov G, Chen G, Chen HS, Chen JC, Chen ML, Chen SJ, Chen X, Chen XR, Chen YB, Cheng HP, Chu XK, Chu YP, Cronin-Hennessy D, Dai HL, Dai JP, Dedovich D, Deng ZY, Denig A, Denysenko I, Destefanis M, Ding WM, Ding Y, Dong C, Dong J, Dong LY, Dong MY, Du SX, Fan JZ, Fang J, Fang SS, Fang Y, Fava L, Feng CQ, Fu CD, Fu JL, Fuks O, Gao Q, Gao Y, Geng C, Goetzen K, Gong WX, Gradl W, Greco M, Gu MH, Gu YT, Guan YH, Guo AQ, Guo LB, Guo T, Guo YP, Han YL, Harris FA, He KL, He M, He ZY, Held T, Heng YK, Hou ZL, Hu C, Hu HM, Hu JF, Hu T, Huang GM, Huang GS, Huang JS, Huang L, Huang XT, Huang Y, Hussain T, Ji CS, Ji Q, Ji QP, Ji XB, Ji XL, Jiang LL, Jiang XS, Jiao JB, Jiao Z, Jin DP, Jin S, Johansson T, Kalantar-Nayestanaki N, Kang XL, Kang XS, Kavatsyuk M, Kloss B, Kopf B, Kornicer M, Kuehn W, Kupsc A, Lai W, Lange JS, Lara M, Larin P, Leyhe M, Li CH, Li C, Li C, Li D, Li DM, Li F, Li G, Li HB, Li JC, Li K, Li K, Li L, Li PR, Li QJ, Li T, Li WD, Li WG, Li XL, Li XN, Li XQ, Li XR, Li ZB, Liang H, Liang YF, Liang YT, Lin DX, Liu BJ, Liu CL, Liu CX, Liu FH, Liu F, Liu F, Liu HB, Liu HH, Liu HM, Liu J, Liu JP, Liu K, Liu KY, Liu PL, Liu Q, Liu SB, Liu X, Liu YB, Liu ZA, Liu Z, Liu Z, Loehner H, Lou XC, Lu GR, Lu HJ, Lu HL, Lu JG, Lu XR, Lu Y, Lu YP, Luo CL, Luo MX, Luo T, Luo XL, Lv M, Ma FC, Ma HL, Ma QM, Ma S, Ma T, Ma XY, Maas FE, Maggiora M, Malik QA, Mao YJ, Mao ZP, Messchendorp JG, Min J, Min TJ, Mitchell RE, Mo XH, Mo YJ, Moeini H, Morales Morales C, Moriya K, Muchnoi NY, Muramatsu H, Nefedov Y, Nikolaev IB, Ning Z, Nisar S, Niu XY, Olsen SL, Ouyang Q, Pacetti S, Pelizaeus M, Peng HP, Peters K, Ping JL, Ping RG, Poling R, Prencipe E, Qi M, Qian S, Qiao CF, Qin LQ, Qin XS, Qin Y, Qin ZH, Qiu JF, Rashid KH, Redmer CF, Ripka M, Rong G, Ruan XD, Sarantsev A, Schoenning K, Schumann S, Shan W, Shao M, Shen CP, Shen XY, Sheng HY, Shepherd MR, Song WM, Song XY, Spataro S, Spruck B, Sun GX, Sun JF, Sun SS, Sun YJ, Sun YZ, Sun ZJ, Sun ZT, Tang CJ, Tang X, Tapan I, Thorndike EH, Toth D, Ullrich M, Uman I, Varner GS, Wang B, Wang D, Wang DY, Wang K, Wang LL, Wang LS, Wang M, Wang P, Wang PL, Wang QJ, Wang SG, Wang W, Wang XF, Wang YD, Wang YF, Wang YQ, Wang Z, Wang ZG, Wang ZH, Wang ZY, Wei DH, Wei JB, Weidenkaff P, Wen SP, Werner M, Wiedner U, Wolke M, Wu LH, Wu N, Wu Z, Xia LG, Xia Y, Xiao D, Xiao ZJ, Xie YG, Xiu QL, Xu GF, Xu L, Xu QJ, Xu QN, Xu XP, Xue Z, Yan L, Yan WB, Yan WC, Yan YH, Yang HX, Yang Y, Yang YX, Ye H, Ye M, Ye MH, Yu BX, Yu CX, Yu HW, Yu JS, Yu SP, Yuan CZ, Yuan WL, Yuan Y, Zafar AA, Zallo A, Zang SL, Zeng Y, Zhang BX, Zhang BY, Zhang C, Zhang CB, Zhang CC, Zhang DH, Zhang HH, Zhang HY, Zhang JJ, Zhang JQ, Zhang JW, Zhang JY, Zhang JZ, Zhang SH, Zhang XJ, Zhang XY, Zhang Y, Zhang YH, Zhang ZH, Zhang ZP, Zhang ZY, Zhao G, Zhao JW, Zhao L, Zhao L, Zhao MG, Zhao Q, Zhao QW, Zhao SJ, Zhao TC, Zhao XH, Zhao YB, Zhao ZG, Zhemchugov A, Zheng B, Zheng JP, Zheng YH, Zhong B, Zhou L, Zhou L, Zhou X, Zhou XK, Zhou XR, Zhou XY, Zhu K, Zhu KJ, Zhu XL, Zhu YC, Zhu YS, Zhu ZA, Zhuang J, Zou BS, Zou JH. Observation of e+e- → γX(3872) at BESIII. Phys Rev Lett 2014; 112:092001. [PMID: 24655246 DOI: 10.1103/physrevlett.112.092001] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2013] [Indexed: 06/03/2023]
Abstract
With data samples collected with the BESIII detector operating at the BEPCII storage ring at center-of-mass energies from 4.009 to 4.420 GeV, the process e+e-→ γX(3872) is observed for the first time with a statistical significance of 6.3σ. The measured mass of the X(3872) is (3871.9 ± 0.7s tat ± 0.2 syst) MeV/c(2), in agreement with previous measurements. Measurements of the product of the cross section σ[e+e- → γX(3872)] and the branching fraction B[X(3872)→π+π-J/ψ] at center-of-mass energies 4.009, 4.229, 4.260, and 4.360 GeV are reported. Our measurements are consistent with expectations for the radiative transition process Y(4260) → γX(3872).
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Affiliation(s)
- M Ablikim
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M N Achasov
- G.I. Budker Institute of Nuclear Physics SB RAS (BINP), Novosibirsk 630090, Russia
| | - X C Ai
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - O Albayrak
- Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
| | - D J Ambrose
- University of Rochester, Rochester, New York 14627, USA
| | - F F An
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Q An
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - J Z Bai
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | | | - Y Ban
- Peking University, Beijing 100871, People's Republic of China
| | - J V Bennett
- Indiana University, Bloomington, Indiana 47405, USA
| | - M Bertani
- INFN Laboratori Nazionali di Frascati, I-00044 Frascati, Italy
| | - J M Bian
- University of Minnesota, Minneapolis, Minnesota 55455, USA
| | - E Boger
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - O Bondarenko
- KVI, University of Groningen, NL-9747 AA Groningen, The Netherlands
| | - I Boyko
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - S Braun
- Universitaet Giessen, D-35392 Giessen, Germany
| | - R A Briere
- Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
| | - H Cai
- Wuhan University, Wuhan 430072, People's Republic of China
| | - X Cai
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - O Cakir
- Ankara University, Dogol Caddesi, 06100 Tandogan, Ankara, Turkey
| | - A Calcaterra
- INFN Laboratori Nazionali di Frascati, I-00044 Frascati, Italy
| | - G F Cao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S A Cetin
- Dogus University, 34722 Istanbul, Turkey
| | - J F Chang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - G Chelkov
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - G Chen
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - H S Chen
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J C Chen
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M L Chen
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S J Chen
- Nanjing University, Nanjing 210093, People's Republic of China
| | - X Chen
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X R Chen
- Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Y B Chen
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - H P Cheng
- Huangshan College, Huangshan 245000, People's Republic of China
| | - X K Chu
- Peking University, Beijing 100871, People's Republic of China
| | - Y P Chu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | | | - H L Dai
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J P Dai
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - D Dedovich
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - Z Y Deng
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - A Denig
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - I Denysenko
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - M Destefanis
- University of Turin, I-10125 Turin, Italy and INFN, I-10125 Turin, Italy
| | - W M Ding
- Shandong University, Jinan 250100, People's Republic of China
| | - Y Ding
- Liaoning University, Shenyang 110036, People's Republic of China
| | - C Dong
- Nankai university, Tianjin 300071, People's Republic of China
| | - J Dong
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L Y Dong
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M Y Dong
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S X Du
- Zhengzhou University, Zhengzhou 450001, People's Republic of China
| | - J Z Fan
- Tsinghua University, Beijing 100084, People's Republic of China
| | - J Fang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S S Fang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y Fang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L Fava
- University of Eastern Piedmont, I-15121 Alessandria, Italy and INFN, I-10125 Turin, Italy
| | - C Q Feng
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - C D Fu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J L Fu
- Nanjing University, Nanjing 210093, People's Republic of China
| | - O Fuks
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - Q Gao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y Gao
- Tsinghua University, Beijing 100084, People's Republic of China
| | - C Geng
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - K Goetzen
- GSI Helmholtzcentre for Heavy Ion Research GmbH, D-64291 Darmstadt, Germany
| | - W X Gong
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - W Gradl
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - M Greco
- University of Turin, I-10125 Turin, Italy and INFN, I-10125 Turin, Italy
| | - M H Gu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y T Gu
- GuangXi University, Nanning 530004, People's Republic of China
| | - Y H Guan
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - A Q Guo
- Nankai university, Tianjin 300071, People's Republic of China
| | - L B Guo
- Nanjing Normal University, Nanjing 210023, People's Republic of China
| | - T Guo
- Nanjing Normal University, Nanjing 210023, People's Republic of China
| | - Y P Guo
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - Y L Han
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - F A Harris
- University of Hawaii, Honolulu, Hawaii 96822, USA
| | - K L He
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M He
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z Y He
- Nankai university, Tianjin 300071, People's Republic of China
| | - T Held
- Bochum Ruhr-University, D-44780 Bochum, Germany
| | - Y K Heng
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z L Hou
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - C Hu
- Nanjing Normal University, Nanjing 210023, People's Republic of China
| | - H M Hu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J F Hu
- Universitaet Giessen, D-35392 Giessen, Germany
| | - T Hu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - G M Huang
- Central China Normal University, Wuhan 430079, People's Republic of China
| | - G S Huang
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - J S Huang
- Henan Normal University, Xinxiang 453007, People's Republic of China
| | - L Huang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X T Huang
- Shandong University, Jinan 250100, People's Republic of China
| | - Y Huang
- Nanjing University, Nanjing 210093, People's Republic of China
| | - T Hussain
- University of the Punjab, Lahore 54590, Pakistan
| | - C S Ji
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Q Ji
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Q P Ji
- Nankai university, Tianjin 300071, People's Republic of China
| | - X B Ji
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X L Ji
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L L Jiang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X S Jiang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J B Jiao
- Shandong University, Jinan 250100, People's Republic of China
| | - Z Jiao
- Huangshan College, Huangshan 245000, People's Republic of China
| | - D P Jin
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S Jin
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - T Johansson
- Uppsala University, Box 516, SE-75120 Uppsala, Sweden
| | | | - X L Kang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X S Kang
- Nankai university, Tianjin 300071, People's Republic of China
| | - M Kavatsyuk
- KVI, University of Groningen, NL-9747 AA Groningen, The Netherlands
| | - B Kloss
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - B Kopf
- Bochum Ruhr-University, D-44780 Bochum, Germany
| | - M Kornicer
- University of Hawaii, Honolulu, Hawaii 96822, USA
| | - W Kuehn
- Universitaet Giessen, D-35392 Giessen, Germany
| | - A Kupsc
- Uppsala University, Box 516, SE-75120 Uppsala, Sweden
| | - W Lai
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J S Lange
- Universitaet Giessen, D-35392 Giessen, Germany
| | - M Lara
- Indiana University, Bloomington, Indiana 47405, USA
| | - P Larin
- Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - M Leyhe
- Bochum Ruhr-University, D-44780 Bochum, Germany
| | - C H Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Cheng Li
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Cui Li
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - D Li
- Hunan University, Changsha 410082, People's Republic of China
| | - D M Li
- Zhengzhou University, Zhengzhou 450001, People's Republic of China
| | - F Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - G Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - H B Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J C Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - K Li
- Shandong University, Jinan 250100, People's Republic of China
| | - K Li
- Hangzhou Normal University, Hangzhou 310036, People's Republic of China
| | - Lei Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - P R Li
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Q J Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - T Li
- Shandong University, Jinan 250100, People's Republic of China
| | - W D Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - W G Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X L Li
- Shandong University, Jinan 250100, People's Republic of China
| | - X N Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X Q Li
- Nankai university, Tianjin 300071, People's Republic of China
| | - X R Li
- Seoul National University, Seoul 151-747, Korea
| | - Z B Li
- Sun Yat-Sen University, Guangzhou 510275, People's Republic of China
| | - H Liang
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Y F Liang
- Sichuan University, Chengdu 610064, People's Republic of China
| | - Y T Liang
- Universitaet Giessen, D-35392 Giessen, Germany
| | - D X Lin
- Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - B J Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - C L Liu
- Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
| | - C X Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - F H Liu
- Shanxi University, Taiyuan 030006, People's Republic of China
| | - Fang Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Feng Liu
- Central China Normal University, Wuhan 430079, People's Republic of China
| | - H B Liu
- GuangXi University, Nanning 530004, People's Republic of China
| | - H H Liu
- Henan University of Science and Technology, Luoyang 471003, People's Republic of China
| | - H M Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J P Liu
- Wuhan University, Wuhan 430072, People's Republic of China
| | - K Liu
- Tsinghua University, Beijing 100084, People's Republic of China
| | - K Y Liu
- Liaoning University, Shenyang 110036, People's Republic of China
| | - P L Liu
- Shandong University, Jinan 250100, People's Republic of China
| | - Q Liu
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - S B Liu
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - X Liu
- Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Y B Liu
- Nankai university, Tianjin 300071, People's Republic of China
| | - Z A Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Zhiqiang Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Zhiqing Liu
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - H Loehner
- KVI, University of Groningen, NL-9747 AA Groningen, The Netherlands
| | - X C Lou
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - G R Lu
- Henan Normal University, Xinxiang 453007, People's Republic of China
| | - H J Lu
- Huangshan College, Huangshan 245000, People's Republic of China
| | - H L Lu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J G Lu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X R Lu
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Y Lu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y P Lu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - C L Luo
- Nanjing Normal University, Nanjing 210023, People's Republic of China
| | - M X Luo
- Zhejiang University, Hangzhou 310027, People's Republic of China
| | - T Luo
- University of Hawaii, Honolulu, Hawaii 96822, USA
| | - X L Luo
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M Lv
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - F C Ma
- Liaoning University, Shenyang 110036, People's Republic of China
| | - H L Ma
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Q M Ma
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S Ma
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - T Ma
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X Y Ma
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - F E Maas
- Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - M Maggiora
- University of Turin, I-10125 Turin, Italy and INFN, I-10125 Turin, Italy
| | - Q A Malik
- University of the Punjab, Lahore 54590, Pakistan
| | - Y J Mao
- Peking University, Beijing 100871, People's Republic of China
| | - Z P Mao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J G Messchendorp
- KVI, University of Groningen, NL-9747 AA Groningen, The Netherlands
| | - J Min
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - T J Min
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - R E Mitchell
- Indiana University, Bloomington, Indiana 47405, USA
| | - X H Mo
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y J Mo
- Central China Normal University, Wuhan 430079, People's Republic of China
| | - H Moeini
- KVI, University of Groningen, NL-9747 AA Groningen, The Netherlands
| | - C Morales Morales
- Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - K Moriya
- Indiana University, Bloomington, Indiana 47405, USA
| | - N Yu Muchnoi
- G.I. Budker Institute of Nuclear Physics SB RAS (BINP), Novosibirsk 630090, Russia
| | - H Muramatsu
- University of Minnesota, Minneapolis, Minnesota 55455, USA
| | - Y Nefedov
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - I B Nikolaev
- G.I. Budker Institute of Nuclear Physics SB RAS (BINP), Novosibirsk 630090, Russia
| | - Z Ning
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S Nisar
- COMSATS Institute of Information Technology, Lahore, Defence Road, Off Raiwind Road, 54000 Lahore, Pakistan
| | - X Y Niu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S L Olsen
- Seoul National University, Seoul 151-747, Korea
| | - Q Ouyang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S Pacetti
- INFN and University of Perugia, I-06100 Perugia, Italy
| | - M Pelizaeus
- Bochum Ruhr-University, D-44780 Bochum, Germany
| | - H P Peng
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - K Peters
- GSI Helmholtzcentre for Heavy Ion Research GmbH, D-64291 Darmstadt, Germany
| | - J L Ping
- Nanjing Normal University, Nanjing 210023, People's Republic of China
| | - R G Ping
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - R Poling
- University of Minnesota, Minneapolis, Minnesota 55455, USA
| | - E Prencipe
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - M Qi
- Nanjing University, Nanjing 210093, People's Republic of China
| | - S Qian
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - C F Qiao
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - L Q Qin
- Shandong University, Jinan 250100, People's Republic of China
| | - X S Qin
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y Qin
- Peking University, Beijing 100871, People's Republic of China
| | - Z H Qin
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J F Qiu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - K H Rashid
- University of the Punjab, Lahore 54590, Pakistan
| | - C F Redmer
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - M Ripka
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - G Rong
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X D Ruan
- GuangXi University, Nanning 530004, People's Republic of China
| | - A Sarantsev
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - K Schoenning
- Uppsala University, Box 516, SE-75120 Uppsala, Sweden
| | - S Schumann
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - W Shan
- Peking University, Beijing 100871, People's Republic of China
| | - M Shao
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - C P Shen
- Beihang University, Beijing 100191, People's Republic of China
| | - X Y Shen
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - H Y Sheng
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M R Shepherd
- Indiana University, Bloomington, Indiana 47405, USA
| | - W M Song
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X Y Song
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S Spataro
- University of Turin, I-10125 Turin, Italy and INFN, I-10125 Turin, Italy
| | - B Spruck
- Universitaet Giessen, D-35392 Giessen, Germany
| | - G X Sun
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J F Sun
- Henan Normal University, Xinxiang 453007, People's Republic of China
| | - S S Sun
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y J Sun
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Y Z Sun
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z J Sun
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z T Sun
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - C J Tang
- Sichuan University, Chengdu 610064, People's Republic of China
| | - X Tang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - I Tapan
- Uludag University, 16059 Bursa, Turkey
| | - E H Thorndike
- University of Rochester, Rochester, New York 14627, USA
| | - D Toth
- University of Minnesota, Minneapolis, Minnesota 55455, USA
| | - M Ullrich
- Universitaet Giessen, D-35392 Giessen, Germany
| | - I Uman
- Dogus University, 34722 Istanbul, Turkey
| | - G S Varner
- University of Hawaii, Honolulu, Hawaii 96822, USA
| | - B Wang
- Nankai university, Tianjin 300071, People's Republic of China
| | - D Wang
- Peking University, Beijing 100871, People's Republic of China
| | - D Y Wang
- Peking University, Beijing 100871, People's Republic of China
| | - K Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L L Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L S Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M Wang
- Shandong University, Jinan 250100, People's Republic of China
| | - P Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - P L Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Q J Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S G Wang
- Peking University, Beijing 100871, People's Republic of China
| | - W Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X F Wang
- Tsinghua University, Beijing 100084, People's Republic of China
| | - Y D Wang
- INFN Laboratori Nazionali di Frascati, I-00044 Frascati, Italy
| | - Y F Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y Q Wang
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - Z Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z G Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z H Wang
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Z Y Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - D H Wei
- Guangxi Normal University, Guilin 541004, People's Republic of China
| | - J B Wei
- Peking University, Beijing 100871, People's Republic of China
| | - P Weidenkaff
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - S P Wen
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M Werner
- Universitaet Giessen, D-35392 Giessen, Germany
| | - U Wiedner
- Bochum Ruhr-University, D-44780 Bochum, Germany
| | - M Wolke
- Uppsala University, Box 516, SE-75120 Uppsala, Sweden
| | - L H Wu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - N Wu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z Wu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L G Xia
- Tsinghua University, Beijing 100084, People's Republic of China
| | - Y Xia
- Hunan University, Changsha 410082, People's Republic of China
| | - D Xiao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z J Xiao
- Nanjing Normal University, Nanjing 210023, People's Republic of China
| | - Y G Xie
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Q L Xiu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - G F Xu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L Xu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Q J Xu
- Hangzhou Normal University, Hangzhou 310036, People's Republic of China
| | - Q N Xu
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - X P Xu
- Soochow University, Suzhou 215006, People's Republic of China
| | - Z Xue
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L Yan
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - W B Yan
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - W C Yan
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Y H Yan
- Hunan University, Changsha 410082, People's Republic of China
| | - H X Yang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y Yang
- Central China Normal University, Wuhan 430079, People's Republic of China
| | - Y X Yang
- Guangxi Normal University, Guilin 541004, People's Republic of China
| | - H Ye
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M Ye
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M H Ye
- China Center of Advanced Science and Technology, Beijing 100190, People's Republic of China
| | - B X Yu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - C X Yu
- Nankai university, Tianjin 300071, People's Republic of China
| | - H W Yu
- Peking University, Beijing 100871, People's Republic of China
| | - J S Yu
- Lanzhou University, Lanzhou 730000, People's Republic of China
| | - S P Yu
- Shandong University, Jinan 250100, People's Republic of China
| | - C Z Yuan
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - W L Yuan
- Nanjing University, Nanjing 210093, People's Republic of China
| | - Y Yuan
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - A A Zafar
- University of the Punjab, Lahore 54590, Pakistan
| | - A Zallo
- INFN Laboratori Nazionali di Frascati, I-00044 Frascati, Italy
| | - S L Zang
- Nanjing University, Nanjing 210093, People's Republic of China
| | - Y Zeng
- Hunan University, Changsha 410082, People's Republic of China
| | - B X Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - B Y Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - C Zhang
- Nanjing University, Nanjing 210093, People's Republic of China
| | - C B Zhang
- Hunan University, Changsha 410082, People's Republic of China
| | - C C Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - D H Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - H H Zhang
- Sun Yat-Sen University, Guangzhou 510275, People's Republic of China
| | - H Y Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J J Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J Q Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J W Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J Y Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J Z Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S H Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X J Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X Y Zhang
- Shandong University, Jinan 250100, People's Republic of China
| | - Y Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y H Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z H Zhang
- Central China Normal University, Wuhan 430079, People's Republic of China
| | - Z P Zhang
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Z Y Zhang
- Wuhan University, Wuhan 430072, People's Republic of China
| | - G Zhao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J W Zhao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Lei Zhao
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Ling Zhao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M G Zhao
- Nankai university, Tianjin 300071, People's Republic of China
| | - Q Zhao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Q W Zhao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S J Zhao
- Zhengzhou University, Zhengzhou 450001, People's Republic of China
| | - T C Zhao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X H Zhao
- Nanjing University, Nanjing 210093, People's Republic of China
| | - Y B Zhao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z G Zhao
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - A Zhemchugov
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - B Zheng
- University of South China, Hengyang 421001, People's Republic of China
| | - J P Zheng
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y H Zheng
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - B Zhong
- Nanjing Normal University, Nanjing 210023, People's Republic of China
| | - L Zhou
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Li Zhou
- Nankai university, Tianjin 300071, People's Republic of China
| | - X Zhou
- Wuhan University, Wuhan 430072, People's Republic of China
| | - X K Zhou
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - X R Zhou
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - X Y Zhou
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - K Zhu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - K J Zhu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X L Zhu
- Tsinghua University, Beijing 100084, People's Republic of China
| | - Y C Zhu
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Y S Zhu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z A Zhu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J Zhuang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - B S Zou
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J H Zou
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
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Ablikim M, Achasov MN, Albayrak O, Ambrose DJ, An FF, An Q, Bai JZ, Baldini Ferroli R, Ban Y, Becker J, Bennett JV, Bertani M, Bian JM, Boger E, Bondarenko O, Boyko I, Braun S, Briere RA, Bytev V, Cai H, Cai X, Cakir O, Calcaterra A, Cao GF, Cetin SA, Chang JF, Chelkov G, Chen G, Chen HS, Chen JC, Chen ML, Chen SJ, Chen XR, Chen YB, Cheng HP, Chu XK, Chu YP, Cronin-Hennessy D, Dai HL, Dai JP, Dedovich D, Deng ZY, Denig A, Denysenko I, Destefanis M, Ding WM, Ding Y, Dong LY, Dong MY, Du SX, Fang J, Fang SS, Fava L, Feng CQ, Friedel P, Fu CD, Fu JL, Fuks O, Gao Y, Geng C, Goetzen K, Gong WX, Gradl W, Greco M, Gu MH, Gu YT, Guan YH, Guo AQ, Guo LB, Guo T, Guo YP, Han YL, Harris FA, He KL, He M, He ZY, Held T, Heng YK, Hou ZL, Hu C, Hu HM, Hu JF, Hu T, Huang GM, Huang GS, Huang JS, Huang L, Huang XT, Huang Y, Hussain T, Ji CS, Ji Q, Ji QP, Ji XB, Ji XL, Jiang LL, Jiang XS, Jiao JB, Jiao Z, Jin DP, Jin S, Jing FF, Kalantar-Nayestanaki N, Kavatsyuk M, Kloss B, Kopf B, Kornicer M, Kuehn W, Lai W, Lange JS, Lara M, Larin P, Leyhe M, Li CH, Li C, Li C, Li DL, Li DM, Li F, Li G, Li HB, Li JC, Li K, Li L, Li N, Li PR, Li QJ, Li WD, Li WG, Li XL, Li XN, Li XQ, Li XR, Li ZB, Liang H, Liang YF, Liang YT, Liao GR, Lin DX, Liu BJ, Liu CL, Liu CX, Liu FH, Liu F, Liu F, Liu HB, Liu HH, Liu HM, Liu JP, Liu K, Liu KY, Liu PL, Liu Q, Liu SB, Liu X, Liu YB, Liu ZA, Liu Z, Liu Z, Loehner H, Lou XC, Lu GR, Lu HJ, Lu JG, Lu XR, Lu YP, Luo CL, Luo MX, Luo T, Luo XL, Lv M, Ma FC, Ma HL, Ma QM, Ma S, Ma T, Ma XY, Maas FE, Maggiora M, Malik QA, Mao YJ, Mao ZP, Messchendorp JG, Min J, Min TJ, Mitchell RE, Mo XH, Moeini H, MoralesMorales C, Moriya K, Muchnoi NY, Muramatsu H, Nefedov Y, Nikolaev IB, Ning Z, Nisar S, Olsen SL, Ouyang Q, Pacetti S, Park JW, Pelizaeus M, Peng HP, Peters K, Ping JL, Ping RG, Poling R, Prencipe E, Qi M, Qian S, Qiao CF, Qin LQ, Qin XS, Qin Y, Qin ZH, Qiu JF, Rashid KH, Redmer CF, Ripka M, Rong G, Ruan XD, Sarantsev A, Schumann S, Shan W, Shao M, Shen CP, Shen XY, Sheng HY, Shepherd MR, Song WM, Song XY, Spataro S, Spruck B, Sun GX, Sun JF, Sun SS, Sun YJ, Sun YZ, Sun ZJ, Sun ZT, Tang CJ, Tang X, Tapan I, Thorndike EH, Toth D, Ullrich M, Uman I, Varner GS, Wang B, Wang D, Wang DY, Wang K, Wang LL, Wang LS, Wang M, Wang P, Wang PL, Wang QJ, Wang SG, Wang XF, Wang XL, Wang YD, Wang YF, Wang YQ, Wang Z, Wang ZG, Wang ZH, Wang ZY, Wei DH, Wei JB, Weidenkaff P, Wen QG, Wen SP, Werner M, Wiedner U, Wu LH, Wu N, Wu SX, Wu W, Wu Z, Xia LG, Xia YX, Xiao ZJ, Xie YG, Xiu QL, Xu GF, Xu QJ, Xu QN, Xu XP, Xue Z, Yan L, Yan WB, Yan WC, Yan YH, Yang HX, Yang Y, Yang YX, Yang YZ, Ye H, Ye M, Ye MH, Yu BX, Yu CX, Yu HW, Yu JS, Yu SP, Yuan CZ, Yuan WL, Yuan Y, Zafar AA, Zallo A, Zang SL, Zeng Y, Zhang BX, Zhang BY, Zhang C, Zhang CB, Zhang CC, Zhang DH, Zhang HH, Zhang HY, Zhang JL, Zhang JQ, Zhang JW, Zhang JY, Zhang JZ, Zhang L, Zhang SH, Zhang XJ, Zhang XY, Zhang Y, Zhang YH, Zhang ZP, Zhang ZY, Zhang Z, Zhao G, Zhao JW, Zhao L, Zhao L, Zhao MG, Zhao Q, Zhao SJ, Zhao TC, Zhao XH, Zhao YB, Zhao ZG, Zhemchugov A, Zheng B, Zheng JP, Zheng YH, Zhong B, Zhou L, Zhou X, Zhou XK, Zhou XR, Zhu K, Zhu KJ, Zhu XL, Zhu YC, Zhu YS, Zhu ZA, Zhuang J, Zou BS, Zou JH. Observation of a charged (DD*)± mass peak in e+ e- → πDD* at sqrt[s] = 4.26 GeV. Phys Rev Lett 2014; 112:022001. [PMID: 24484002 DOI: 10.1103/physrevlett.112.022001] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2013] [Indexed: 06/03/2023]
Abstract
We report on a study of the process e+ e- → π± (DD*)∓ at sqrt[s] = 4.26 GeV using a 525 pb(-1) data sample collected with the BESIII detector at the BEPCII storage ring. A distinct charged structure is observed in the (DD*)∓ invariant mass distribution. When fitted to a mass-dependent-width Breit-Wigner line shape, the pole mass and width are determined to be Mpole = (3883.9±1.5(stat)±4.2(syst)) MeV/c2 and Γpole = (24.8±3.3(stat)±11.0(syst)) MeV. The mass and width of the structure, which we refer to as Zc(3885), are 2σ and 1σ, respectively, below those of the Zc(3900) → π± J/ψ peak observed by BESIII and Belle in π+ π- J/ψ final states produced at the same center-of-mass energy. The angular distribution of the πZc(3885) system favors a JP = 1+ quantum number assignment for the structure and disfavors 1- or 0-. The Born cross section times the DD* branching fraction of the Zc(3885) is measured to be σ(e+ e- → π± Zc(3885)∓)×B(Zc(3885)∓ → (DD*)∓) = (83.5±6.6(stat)±22.0(syst)) pb. Assuming the Zc(3885) → DD* signal reported here and the Zc(3900) → πJ/ψ signal are from the same source, the partial width ratio (Γ(Zc(3885) → DD*)/Γ(Zc(3900) → πJ/ψ)) = 6.2±1.1(stat)±2.7(syst) is determined.
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Affiliation(s)
- M Ablikim
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M N Achasov
- G.I. Budker Institute of Nuclear Physics SB RAS (BINP), Novosibirsk 630090, Russia
| | - O Albayrak
- Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
| | - D J Ambrose
- University of Rochester, Rochester, New York 14627, USA
| | - F F An
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Q An
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - J Z Bai
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | | | - Y Ban
- Peking University, Beijing 100871, People's Republic of China
| | - J Becker
- Bochum Ruhr-University, D-44780 Bochum, Germany
| | - J V Bennett
- Indiana University, Bloomington, Indiana 47405, USA
| | - M Bertani
- INFN Laboratori Nazionali di Frascati, I-00044, Frascati, Italy
| | - J M Bian
- University of Minnesota, Minneapolis, Minnesota 55455, USA
| | - E Boger
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - O Bondarenko
- KVI, University of Groningen, NL-9747 AA Groningen, Netherlands
| | - I Boyko
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - S Braun
- Universitaet Giessen, D-35392 Giessen, Germany
| | - R A Briere
- Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
| | - V Bytev
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - H Cai
- WuhanUniversity, Wuhan 430072, People's Republic of China
| | - X Cai
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - O Cakir
- Ankara University, Dogol Caddesi, 06100 Tandogan, Ankara, Turkey
| | - A Calcaterra
- INFN Laboratori Nazionali di Frascati, I-00044, Frascati, Italy
| | - G F Cao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S A Cetin
- Dogus University, 34722 Istanbul, Turkey
| | - J F Chang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - G Chelkov
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - G Chen
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - H S Chen
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J C Chen
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M L Chen
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S J Chen
- Nanjing University, Nanjing 210093, People's Republic of China
| | - X R Chen
- Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Y B Chen
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - H P Cheng
- Huangshan College, Huangshan 245000, People's Republic of China
| | - X K Chu
- Peking University, Beijing 100871, People's Republic of China
| | - Y P Chu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | | | - H L Dai
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J P Dai
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - D Dedovich
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - Z Y Deng
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - A Denig
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - I Denysenko
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - M Destefanis
- University of Turin, I-10125 Turin, Italy and INFN, I-10125 Turin, Italy
| | - W M Ding
- Shandong University, Jinan 250100, People's Republic of China
| | - Y Ding
- Liaoning University, Shenyang 110036, People's Republic of China
| | - L Y Dong
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M Y Dong
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S X Du
- Zhengzhou University, Zhengzhou 450001, People's Republic of China
| | - J Fang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S S Fang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L Fava
- University of Eastern Piedmont, I-15121 Alessandria, Italy and INFN, I-10125 Turin, Italy
| | - C Q Feng
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - P Friedel
- Bochum Ruhr-University, D-44780 Bochum, Germany
| | - C D Fu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J L Fu
- Nanjing University, Nanjing 210093, People's Republic of China
| | - O Fuks
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - Y Gao
- Tsinghua University, Beijing 100084, People's Republic of China
| | - C Geng
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - K Goetzen
- GSI Helmholtzcentre for Heavy Ion Research GmbH, D-64291 Darmstadt, Germany
| | - W X Gong
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - W Gradl
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - M Greco
- University of Turin, I-10125 Turin, Italy and INFN, I-10125 Turin, Italy
| | - M H Gu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y T Gu
- GuangXi University, Nanning 530004, People's Republic of China
| | - Y H Guan
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - A Q Guo
- Nankai University, Tianjin 300071, People's Republic of China
| | - L B Guo
- Nanjing Normal University, Nanjing 210023, People's Republic of China
| | - T Guo
- Nanjing Normal University, Nanjing 210023, People's Republic of China
| | - Y P Guo
- Nankai University, Tianjin 300071, People's Republic of China
| | - Y L Han
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - F A Harris
- University of Hawaii, Honolulu, Hawaii 96822, USA
| | - K L He
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M He
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z Y He
- Nankai University, Tianjin 300071, People's Republic of China
| | - T Held
- Bochum Ruhr-University, D-44780 Bochum, Germany
| | - Y K Heng
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z L Hou
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - C Hu
- Nanjing Normal University, Nanjing 210023, People's Republic of China
| | - H M Hu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J F Hu
- Universitaet Giessen, D-35392 Giessen, Germany
| | - T Hu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - G M Huang
- Central China Normal University, Wuhan 430079, People's Republic of China
| | - G S Huang
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - J S Huang
- Henan Normal University, Xinxiang 453007, People's Republic of China
| | - L Huang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X T Huang
- Shandong University, Jinan 250100, People's Republic of China
| | - Y Huang
- Nanjing University, Nanjing 210093, People's Republic of China
| | - T Hussain
- University of the Punjab, Lahore-54590, Pakistan
| | - C S Ji
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Q Ji
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Q P Ji
- Nankai University, Tianjin 300071, People's Republic of China
| | - X B Ji
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X L Ji
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L L Jiang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X S Jiang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J B Jiao
- Shandong University, Jinan 250100, People's Republic of China
| | - Z Jiao
- Huangshan College, Huangshan 245000, People's Republic of China
| | - D P Jin
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S Jin
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - F F Jing
- Tsinghua University, Beijing 100084, People's Republic of China
| | | | - M Kavatsyuk
- KVI, University of Groningen, NL-9747 AA Groningen, Netherlands
| | - B Kloss
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - B Kopf
- Bochum Ruhr-University, D-44780 Bochum, Germany
| | - M Kornicer
- University of Hawaii, Honolulu, Hawaii 96822, USA
| | - W Kuehn
- Universitaet Giessen, D-35392 Giessen, Germany
| | - W Lai
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J S Lange
- Universitaet Giessen, D-35392 Giessen, Germany
| | - M Lara
- Indiana University, Bloomington, Indiana 47405, USA
| | - P Larin
- Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - M Leyhe
- Bochum Ruhr-University, D-44780 Bochum, Germany
| | - C H Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Cheng Li
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Cui Li
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - D L Li
- Hunan University, Changsha 410082, People's Republic of China
| | - D M Li
- Zhengzhou University, Zhengzhou 450001, People's Republic of China
| | - F Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - G Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - H B Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J C Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - K Li
- Hangzhou Normal University, Hangzhou 310036, People's Republic of China
| | - Lei Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - N Li
- GuangXi University, Nanning 530004, People's Republic of China
| | - P R Li
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Q J Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - W D Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - W G Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X L Li
- Shandong University, Jinan 250100, People's Republic of China
| | - X N Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X Q Li
- Nankai University, Tianjin 300071, People's Republic of China
| | - X R Li
- Seoul National University, Seoul 151-747, Korea
| | - Z B Li
- Sun Yat-Sen University, Guangzhou 510275, People's Republic of China
| | - H Liang
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Y F Liang
- Sichuan University, Chengdu 610064, People's Republic of China
| | - Y T Liang
- Universitaet Giessen, D-35392 Giessen, Germany
| | - G R Liao
- Tsinghua University, Beijing 100084, People's Republic of China
| | - D X Lin
- Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - B J Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - C L Liu
- Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
| | - C X Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - F H Liu
- Shanxi University, Taiyuan 030006, People's Republic of China
| | - Fang Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Feng Liu
- Central China Normal University, Wuhan 430079, People's Republic of China
| | - H B Liu
- GuangXi University, Nanning 530004, People's Republic of China
| | - H H Liu
- Henan University of Science and Technology, Luoyang 471003, People's Republic of China
| | - H M Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J P Liu
- WuhanUniversity, Wuhan 430072, People's Republic of China
| | - K Liu
- Tsinghua University, Beijing 100084, People's Republic of China
| | - K Y Liu
- Liaoning University, Shenyang 110036, People's Republic of China
| | - P L Liu
- Shandong University, Jinan 250100, People's Republic of China
| | - Q Liu
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - S B Liu
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - X Liu
- Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Y B Liu
- Nankai University, Tianjin 300071, People's Republic of China
| | - Z A Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Zhiqiang Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Zhiqing Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - H Loehner
- KVI, University of Groningen, NL-9747 AA Groningen, Netherlands
| | - X C Lou
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - G R Lu
- Henan Normal University, Xinxiang 453007, People's Republic of China
| | - H J Lu
- Huangshan College, Huangshan 245000, People's Republic of China
| | - J G Lu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X R Lu
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Y P Lu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - C L Luo
- Nanjing Normal University, Nanjing 210023, People's Republic of China
| | - M X Luo
- Zhejiang University, Hangzhou 310027, People's Republic of China
| | - T Luo
- University of Hawaii, Honolulu, Hawaii 96822, USA
| | - X L Luo
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M Lv
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - F C Ma
- Liaoning University, Shenyang 110036, People's Republic of China
| | - H L Ma
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Q M Ma
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S Ma
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - T Ma
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X Y Ma
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - F E Maas
- Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - M Maggiora
- University of Turin, I-10125 Turin, Italy and INFN, I-10125 Turin, Italy
| | - Q A Malik
- University of the Punjab, Lahore-54590, Pakistan
| | - Y J Mao
- Peking University, Beijing 100871, People's Republic of China
| | - Z P Mao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | | | - J Min
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - T J Min
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - R E Mitchell
- Indiana University, Bloomington, Indiana 47405, USA
| | - X H Mo
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - H Moeini
- KVI, University of Groningen, NL-9747 AA Groningen, Netherlands
| | - C MoralesMorales
- Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - K Moriya
- Indiana University, Bloomington, Indiana 47405, USA
| | - N Yu Muchnoi
- G.I. Budker Institute of Nuclear Physics SB RAS (BINP), Novosibirsk 630090, Russia
| | - H Muramatsu
- University of Rochester, Rochester, New York 14627, USA
| | - Y Nefedov
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - I B Nikolaev
- G.I. Budker Institute of Nuclear Physics SB RAS (BINP), Novosibirsk 630090, Russia
| | - Z Ning
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S Nisar
- COMSATS Institute of Information Technology, Lahore, Defence Road, Off Raiwind Road, 54000 Lahore, Pakistan
| | - S L Olsen
- Seoul National University, Seoul 151-747, Korea
| | - Q Ouyang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S Pacetti
- INFN and University of Perugia, I-06100, Perugia, Italy
| | - J W Park
- University of Hawaii, Honolulu, Hawaii 96822, USA
| | - M Pelizaeus
- Bochum Ruhr-University, D-44780 Bochum, Germany
| | - H P Peng
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - K Peters
- GSI Helmholtzcentre for Heavy Ion Research GmbH, D-64291 Darmstadt, Germany
| | - J L Ping
- Nanjing Normal University, Nanjing 210023, People's Republic of China
| | - R G Ping
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - R Poling
- University of Minnesota, Minneapolis, Minnesota 55455, USA
| | - E Prencipe
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - M Qi
- Nanjing University, Nanjing 210093, People's Republic of China
| | - S Qian
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - C F Qiao
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - L Q Qin
- Shandong University, Jinan 250100, People's Republic of China
| | - X S Qin
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y Qin
- Peking University, Beijing 100871, People's Republic of China
| | - Z H Qin
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J F Qiu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - K H Rashid
- University of the Punjab, Lahore-54590, Pakistan
| | - C F Redmer
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - M Ripka
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - G Rong
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X D Ruan
- GuangXi University, Nanning 530004, People's Republic of China
| | | | - S Schumann
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - W Shan
- Peking University, Beijing 100871, People's Republic of China
| | - M Shao
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - C P Shen
- Beihang University, Beijing 100191, People's Republic of China
| | - X Y Shen
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - H Y Sheng
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M R Shepherd
- Indiana University, Bloomington, Indiana 47405, USA
| | - W M Song
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X Y Song
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S Spataro
- University of Turin, I-10125 Turin, Italy and INFN, I-10125 Turin, Italy
| | - B Spruck
- Universitaet Giessen, D-35392 Giessen, Germany
| | - G X Sun
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J F Sun
- Henan Normal University, Xinxiang 453007, People's Republic of China
| | - S S Sun
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y J Sun
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Y Z Sun
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z J Sun
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z T Sun
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - C J Tang
- Sichuan University, Chengdu 610064, People's Republic of China
| | - X Tang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - I Tapan
- Uludag University, 16059 Bursa, Turkey
| | - E H Thorndike
- University of Rochester, Rochester, New York 14627, USA
| | - D Toth
- University of Minnesota, Minneapolis, Minnesota 55455, USA
| | - M Ullrich
- Universitaet Giessen, D-35392 Giessen, Germany
| | - I Uman
- Dogus University, 34722 Istanbul, Turkey
| | - G S Varner
- University of Hawaii, Honolulu, Hawaii 96822, USA
| | - B Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - D Wang
- Peking University, Beijing 100871, People's Republic of China
| | - D Y Wang
- Peking University, Beijing 100871, People's Republic of China
| | - K Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L L Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L S Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M Wang
- Shandong University, Jinan 250100, People's Republic of China
| | - P Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - P L Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Q J Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S G Wang
- Peking University, Beijing 100871, People's Republic of China
| | - X F Wang
- Tsinghua University, Beijing 100084, People's Republic of China
| | - X L Wang
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Y D Wang
- INFN Laboratori Nazionali di Frascati, I-00044, Frascati, Italy
| | - Y F Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y Q Wang
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - Z Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z G Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z H Wang
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Z Y Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - D H Wei
- Guangxi Normal University, Guilin 541004, People's Republic of China
| | - J B Wei
- Peking University, Beijing 100871, People's Republic of China
| | - P Weidenkaff
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - Q G Wen
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - S P Wen
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M Werner
- Universitaet Giessen, D-35392 Giessen, Germany
| | - U Wiedner
- Bochum Ruhr-University, D-44780 Bochum, Germany
| | - L H Wu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - N Wu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S X Wu
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - W Wu
- Nankai University, Tianjin 300071, People's Republic of China
| | - Z Wu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L G Xia
- Tsinghua University, Beijing 100084, People's Republic of China
| | - Y X Xia
- Hunan University, Changsha 410082, People's Republic of China
| | - Z J Xiao
- Nanjing Normal University, Nanjing 210023, People's Republic of China
| | - Y G Xie
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Q L Xiu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - G F Xu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Q J Xu
- Hangzhou Normal University, Hangzhou 310036, People's Republic of China
| | - Q N Xu
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - X P Xu
- Seoul National University, Seoul 151-747, Korea and Soochow University, Suzhou 215006, People's Republic of China
| | - Z Xue
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L Yan
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - W B Yan
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - W C Yan
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Y H Yan
- Hunan University, Changsha 410082, People's Republic of China
| | - H X Yang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y Yang
- Central China Normal University, Wuhan 430079, People's Republic of China
| | - Y X Yang
- Guangxi Normal University, Guilin 541004, People's Republic of China
| | - Y Z Yang
- GuangXi University, Nanning 530004, People's Republic of China
| | - H Ye
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M Ye
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M H Ye
- China Center of Advanced Science and Technology, Beijing 100190, People's Republic of China
| | - B X Yu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - C X Yu
- Nankai University, Tianjin 300071, People's Republic of China
| | - H W Yu
- Peking University, Beijing 100871, People's Republic of China
| | - J S Yu
- Lanzhou University, Lanzhou 730000, People's Republic of China
| | - S P Yu
- Shandong University, Jinan 250100, People's Republic of China
| | - C Z Yuan
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - W L Yuan
- Nanjing University, Nanjing 210093, People's Republic of China
| | - Y Yuan
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - A A Zafar
- University of the Punjab, Lahore-54590, Pakistan
| | - A Zallo
- INFN Laboratori Nazionali di Frascati, I-00044, Frascati, Italy
| | - S L Zang
- Nanjing University, Nanjing 210093, People's Republic of China
| | - Y Zeng
- Hunan University, Changsha 410082, People's Republic of China
| | - B X Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - B Y Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - C Zhang
- Nanjing University, Nanjing 210093, People's Republic of China
| | - C B Zhang
- Hunan University, Changsha 410082, People's Republic of China
| | - C C Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - D H Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - H H Zhang
- Sun Yat-Sen University, Guangzhou 510275, People's Republic of China
| | - H Y Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J L Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J Q Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J W Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J Y Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J Z Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - LiLi Zhang
- Hunan University, Changsha 410082, People's Republic of China
| | - S H Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X J Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X Y Zhang
- Shandong University, Jinan 250100, People's Republic of China
| | - Y Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y H Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z P Zhang
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Z Y Zhang
- WuhanUniversity, Wuhan 430072, People's Republic of China
| | - Zhenghao Zhang
- Central China Normal University, Wuhan 430079, People's Republic of China
| | - G Zhao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J W Zhao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Lei Zhao
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Ling Zhao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M G Zhao
- Nankai University, Tianjin 300071, People's Republic of China
| | - Q Zhao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S J Zhao
- Zhengzhou University, Zhengzhou 450001, People's Republic of China
| | - T C Zhao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X H Zhao
- Nanjing University, Nanjing 210093, People's Republic of China
| | - Y B Zhao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z G Zhao
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - A Zhemchugov
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - B Zheng
- University of South China, Hengyang 421001, People's Republic of China
| | - J P Zheng
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y H Zheng
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - B Zhong
- Nanjing Normal University, Nanjing 210023, People's Republic of China
| | - L Zhou
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X Zhou
- WuhanUniversity, Wuhan 430072, People's Republic of China
| | - X K Zhou
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - X R Zhou
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - K Zhu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - K J Zhu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X L Zhu
- Tsinghua University, Beijing 100084, People's Republic of China
| | - Y C Zhu
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Y S Zhu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z A Zhu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J Zhuang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - B S Zou
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J H Zou
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
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Ablikim M, Achasov MN, Albayrak O, Ambrose DJ, An FF, An Q, Bai JZ, Baldini Ferroli R, Ban Y, Becker J, Bennett JV, Bertani M, Bian JM, Boger E, Bondarenko O, Boyko I, Braun S, Briere RA, Bytev V, Cai H, Cai X, Cakir O, Calcaterra A, Cao GF, Cetin SA, Chang JF, Chelkov G, Chen G, Chen HS, Chen JC, Chen ML, Chen SJ, Chen XR, Chen YB, Cheng HP, Chu XK, Chu YP, Cronin-Hennessy D, Dai HL, Dai JP, Dedovich D, Deng ZY, Denig A, Denysenko I, Destefanis M, Ding WM, Ding Y, Dong LY, Dong MY, Du SX, Fang J, Fang SS, Fava L, Feng CQ, Friedel P, Fu CD, Fu JL, Fuks O, Gao Y, Geng C, Goetzen K, Gong WX, Gradl W, Greco M, Gu MH, Gu YT, Guan YH, Guo AQ, Guo LB, Guo T, Guo YP, Han YL, Harris FA, He KL, He M, He ZY, Held T, Heng YK, Hou ZL, Hu C, Hu HM, Hu JF, Hu T, Huang GM, Huang GS, Huang JS, Huang L, Huang XT, Huang Y, Hussain T, Ji CS, Ji Q, Ji QP, Ji XB, Ji XL, Jiang LL, Jiang XS, Jiao JB, Jiao Z, Jin DP, Jin S, Jing FF, Kalantar-Nayestanaki N, Kavatsyuk M, Kloss B, Kopf B, Kornicer M, Kuehn W, Lai W, Lange JS, Lara M, Larin P, Leyhe M, Li CH, Li C, Li C, Li DL, Li DM, Li F, Li G, Li HB, Li JC, Li K, Li L, Li N, Li PR, Li QJ, Li WD, Li WG, Li XL, Li XN, Li XQ, Li XR, Li ZB, Liang H, Liang YF, Liang YT, Liao GR, Lin DX, Liu BJ, Liu CL, Liu CX, Liu FH, Liu F, Liu F, Liu HB, Liu HH, Liu HM, Liu JP, Liu K, Liu KY, Liu PL, Liu Q, Liu SB, Liu X, Liu YB, Liu ZA, Liu Z, Liu Z, Loehner H, Lou XC, Lu GR, Lu HJ, Lu JG, Lu XR, Lu YP, Luo CL, Luo MX, Luo T, Luo XL, Lv M, Ma FC, Ma HL, Ma QM, Ma S, Ma T, Ma XY, Maas FE, Maggiora M, Malik QA, Mao YJ, Mao ZP, Messchendorp JG, Min J, Min TJ, Mitchell RE, Mo XH, Moeini H, Morales Morales C, Moriya K, Muchnoi NY, Muramatsu H, Nefedov Y, Nikolaev IB, Ning Z, Nisar S, Olsen SL, Ouyang Q, Pacetti S, Park JW, Pelizaeus M, Peng HP, Peters K, Ping JL, Ping RG, Poling R, Prencipe E, Qi M, Qian S, Qiao CF, Qin LQ, Qin XS, Qin Y, Qin ZH, Qiu JF, Rashid KH, Redmer CF, Ripka M, Rong G, Ruan XD, Sarantsev A, Schumann S, Shan W, Shao M, Shen CP, Shen XY, Sheng HY, Shepherd MR, Song WM, Song XY, Spataro S, Spruck B, Sun GX, Sun JF, Sun SS, Sun YJ, Sun YZ, Sun ZJ, Sun ZT, Tang CJ, Tang X, Tapan I, Thorndike EH, Toth D, Ullrich M, Uman I, Varner GS, Wang B, Wang D, Wang DY, Wang K, Wang LL, Wang LS, Wang M, Wang P, Wang PL, Wang QJ, Wang SG, Wang XF, Wang XL, Wang YD, Wang YF, Wang YQ, Wang Z, Wang ZG, Wang ZH, Wang ZY, Wei DH, Wei JB, Weidenkaff P, Wen QG, Wen SP, Werner M, Wiedner U, Wu LH, Wu N, Wu SX, Wu W, Wu Z, Xia LG, Xia YX, Xiao ZJ, Xie YG, Xiu QL, Xu GF, Xu QJ, Xu QN, Xu XP, Xu ZR, Xue Z, Yan L, Yan WB, Yan WC, Yan YH, Yang HX, Yang Y, Yang YX, Yang YZ, Ye H, Ye M, Ye MH, Yu BX, Yu CX, Yu HW, Yu JS, Yu SP, Yuan CZ, Yuan WL, Yuan Y, Zafar AA, Zallo A, Zang SL, Zeng Y, Zhang BX, Zhang BY, Zhang C, Zhang CB, Zhang CC, Zhang DH, Zhang HH, Zhang HY, Zhang JQ, Zhang JW, Zhang JY, Zhang JZ, Zhang L, Zhang SH, Zhang XJ, Zhang XY, Zhang Y, Zhang YH, Zhang ZP, Zhang ZY, Zhang Z, Zhao G, Zhao JW, Zhao L, Zhao L, Zhao MG, Zhao Q, Zhao SJ, Zhao TC, Zhao XH, Zhao YB, Zhao ZG, Zhemchugov A, Zheng B, Zheng JP, Zheng YH, Zhong B, Zhou L, Zhou X, Zhou XK, Zhou XR, Zhu K, Zhu KJ, Zhu XL, Zhu YC, Zhu YS, Zhu ZA, Zhuang J, Zou BS, Zou JH. Observation of a charged charmoniumlike structure Zc(4020) and search for the Zc(3900) in e+e-→π+π-hc. Phys Rev Lett 2013; 111:242001. [PMID: 24483645 DOI: 10.1103/physrevlett.111.242001] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2013] [Indexed: 06/03/2023]
Abstract
We study e+e-→π+π-hc at center-of-mass energies from 3.90 to 4.42 GeV by using data samples collected with the BESIII detector operating at the Beijing Electron Positron Collider. The Born cross sections are measured at 13 energies and are found to be of the same order of magnitude as those of e+e-→π+π-J/ψ but with a different line shape. In the π±hc mass spectrum, a distinct structure, referred to as Zc(4020), is observed at 4.02 GeV/c2. The Zc(4020) carries an electric charge and couples to charmonium. A fit to the π±hc invariant mass spectrum, neglecting possible interferences, results in a mass of (4022.9±0.8±2.7) MeV/c2 and a width of (7.9±2.7±2.6) MeV for the Zc(4020), where the first errors are statistical and the second systematic. The difference between the parameters of this structure and the Zc(4025) observed in the D*D[over ¯]* final state is within 1.5σ, but whether they are the same state needs further investigation. No significant Zc(3900) signal is observed, and upper limits on the Zc(3900) production cross sections in π±hc at center-of-mass energies of 4.23 and 4.26 GeV are set.
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Affiliation(s)
- M Ablikim
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M N Achasov
- G. I. Budker Institute of Nuclear Physics SB RAS (BINP), Novosibirsk 630090, Russia
| | - O Albayrak
- Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
| | - D J Ambrose
- University of Rochester, Rochester, New York 14627, USA
| | - F F An
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Q An
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - J Z Bai
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | | | - Y Ban
- Peking University, Beijing 100871, People's Republic of China
| | - J Becker
- Bochum Ruhr-University, D-44780 Bochum, Germany
| | - J V Bennett
- Indiana University, Bloomington, Indiana 47405, USA
| | - M Bertani
- INFN Laboratori Nazionali di Frascati, I-00044, Frascati, Italy
| | - J M Bian
- University of Minnesota, Minneapolis, Minnesota 55455, USA
| | - E Boger
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - O Bondarenko
- KVI, University of Groningen, NL-9747 AA Groningen, Netherlands
| | - I Boyko
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - S Braun
- Universitaet Giessen, D-35392 Giessen, Germany
| | - R A Briere
- Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
| | - V Bytev
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - H Cai
- Wuhan University, Wuhan 430072, People's Republic of China
| | - X Cai
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - O Cakir
- Ankara University, Dogol Caddesi, 06100 Tandogan, Ankara, Turkey
| | - A Calcaterra
- INFN Laboratori Nazionali di Frascati, I-00044, Frascati, Italy
| | - G F Cao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S A Cetin
- Dogus University, 34722 Istanbul, Turkey
| | - J F Chang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - G Chelkov
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - G Chen
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - H S Chen
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J C Chen
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M L Chen
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S J Chen
- Nanjing University, Nanjing 210093, People's Republic of China
| | - X R Chen
- Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Y B Chen
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - H P Cheng
- Huangshan College, Huangshan 245000, People's Republic of China
| | - X K Chu
- Peking University, Beijing 100871, People's Republic of China
| | - Y P Chu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | | | - H L Dai
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J P Dai
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - D Dedovich
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - Z Y Deng
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - A Denig
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - I Denysenko
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - M Destefanis
- University of Turin, I-10125, Turin, Italy and INFN, I-10125, Turin, Italy
| | - W M Ding
- Shandong University, Jinan 250100, People's Republic of China
| | - Y Ding
- Liaoning University, Shenyang 110036, People's Republic of China
| | - L Y Dong
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M Y Dong
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S X Du
- Zhengzhou University, Zhengzhou 450001, People's Republic of China
| | - J Fang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S S Fang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L Fava
- University of Eastern Piedmont, I-15121 Alessandria, Italy and INFN, I-10125, Turin, Italy
| | - C Q Feng
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - P Friedel
- Bochum Ruhr-University, D-44780 Bochum, Germany
| | - C D Fu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J L Fu
- Nanjing University, Nanjing 210093, People's Republic of China
| | - O Fuks
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - Y Gao
- Tsinghua University, Beijing 100084, People's Republic of China
| | - C Geng
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - K Goetzen
- GSI Helmholtzcentre for Heavy Ion Research GmbH, D-64291 Darmstadt, Germany
| | - W X Gong
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - W Gradl
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - M Greco
- University of Turin, I-10125, Turin, Italy and INFN, I-10125, Turin, Italy
| | - M H Gu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y T Gu
- GuangXi University, Nanning 530004, People's Republic of China
| | - Y H Guan
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - A Q Guo
- Nankai University, Tianjin 300071, People's Republic of China
| | - L B Guo
- Nanjing Normal University, Nanjing 210023, People's Republic of China
| | - T Guo
- Nanjing Normal University, Nanjing 210023, People's Republic of China
| | - Y P Guo
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany and Nankai University, Tianjin 300071, People's Republic of China
| | - Y L Han
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - F A Harris
- University of Hawaii, Honolulu, Hawaii 96822, USA
| | - K L He
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M He
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z Y He
- Nankai University, Tianjin 300071, People's Republic of China
| | - T Held
- Bochum Ruhr-University, D-44780 Bochum, Germany
| | - Y K Heng
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z L Hou
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - C Hu
- Nanjing Normal University, Nanjing 210023, People's Republic of China
| | - H M Hu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J F Hu
- Universitaet Giessen, D-35392 Giessen, Germany
| | - T Hu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - G M Huang
- Central China Normal University, Wuhan 430079, People's Republic of China
| | - G S Huang
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - J S Huang
- Henan Normal University, Xinxiang 453007, People's Republic of China
| | - L Huang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X T Huang
- Shandong University, Jinan 250100, People's Republic of China
| | - Y Huang
- Nanjing University, Nanjing 210093, People's Republic of China
| | - T Hussain
- University of the Punjab, Lahore-54590, Pakistan
| | - C S Ji
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Q Ji
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Q P Ji
- Nankai University, Tianjin 300071, People's Republic of China
| | - X B Ji
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X L Ji
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L L Jiang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X S Jiang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J B Jiao
- Shandong University, Jinan 250100, People's Republic of China
| | - Z Jiao
- Huangshan College, Huangshan 245000, People's Republic of China
| | - D P Jin
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S Jin
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - F F Jing
- Tsinghua University, Beijing 100084, People's Republic of China
| | | | - M Kavatsyuk
- KVI, University of Groningen, NL-9747 AA Groningen, Netherlands
| | - B Kloss
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - B Kopf
- Bochum Ruhr-University, D-44780 Bochum, Germany
| | - M Kornicer
- University of Hawaii, Honolulu, Hawaii 96822, USA
| | - W Kuehn
- Universitaet Giessen, D-35392 Giessen, Germany
| | - W Lai
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J S Lange
- Universitaet Giessen, D-35392 Giessen, Germany
| | - M Lara
- Indiana University, Bloomington, Indiana 47405, USA
| | - P Larin
- Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - M Leyhe
- Bochum Ruhr-University, D-44780 Bochum, Germany
| | - C H Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Cheng Li
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Cui Li
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - D L Li
- Hunan University, Changsha 410082, People's Republic of China
| | - D M Li
- Zhengzhou University, Zhengzhou 450001, People's Republic of China
| | - F Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - G Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - H B Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J C Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - K Li
- Hangzhou Normal University, Hangzhou 310036, People's Republic of China
| | - Lei Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - N Li
- GuangXi University, Nanning 530004, People's Republic of China
| | - P R Li
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Q J Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - W D Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - W G Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X L Li
- Shandong University, Jinan 250100, People's Republic of China
| | - X N Li
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X Q Li
- Nankai University, Tianjin 300071, People's Republic of China
| | - X R Li
- Seoul National University, Seoul, 151-747 Korea
| | - Z B Li
- Sun Yat-Sen University, Guangzhou 510275, People's Republic of China
| | - H Liang
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Y F Liang
- Sichuan University, Chengdu 610064, People's Republic of China
| | - Y T Liang
- Universitaet Giessen, D-35392 Giessen, Germany
| | - G R Liao
- Tsinghua University, Beijing 100084, People's Republic of China
| | - D X Lin
- Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - B J Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - C L Liu
- Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
| | - C X Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - F H Liu
- Shanxi University, Taiyuan 030006, People's Republic of China
| | - Fang Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Feng Liu
- Central China Normal University, Wuhan 430079, People's Republic of China
| | - H B Liu
- GuangXi University, Nanning 530004, People's Republic of China
| | - H H Liu
- Henan University of Science and Technology, Luoyang 471003, People's Republic of China
| | - H M Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J P Liu
- Wuhan University, Wuhan 430072, People's Republic of China
| | - K Liu
- Tsinghua University, Beijing 100084, People's Republic of China
| | - K Y Liu
- Liaoning University, Shenyang 110036, People's Republic of China
| | - P L Liu
- Shandong University, Jinan 250100, People's Republic of China
| | - Q Liu
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - S B Liu
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - X Liu
- Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Y B Liu
- Nankai University, Tianjin 300071, People's Republic of China
| | - Z A Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Zhiqiang Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Zhiqing Liu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - H Loehner
- KVI, University of Groningen, NL-9747 AA Groningen, Netherlands
| | - X C Lou
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - G R Lu
- Henan Normal University, Xinxiang 453007, People's Republic of China
| | - H J Lu
- Huangshan College, Huangshan 245000, People's Republic of China
| | - J G Lu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X R Lu
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Y P Lu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - C L Luo
- Nanjing Normal University, Nanjing 210023, People's Republic of China
| | - M X Luo
- Zhejiang University, Hangzhou 310027, People's Republic of China
| | - T Luo
- University of Hawaii, Honolulu, Hawaii 96822, USA
| | - X L Luo
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M Lv
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - F C Ma
- Liaoning University, Shenyang 110036, People's Republic of China
| | - H L Ma
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Q M Ma
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S Ma
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - T Ma
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X Y Ma
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - F E Maas
- Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - M Maggiora
- University of Turin, I-10125, Turin, Italy and INFN, I-10125, Turin, Italy
| | - Q A Malik
- University of the Punjab, Lahore-54590, Pakistan
| | - Y J Mao
- Peking University, Beijing 100871, People's Republic of China
| | - Z P Mao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | | | - J Min
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - T J Min
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - R E Mitchell
- Indiana University, Bloomington, Indiana 47405, USA
| | - X H Mo
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - H Moeini
- KVI, University of Groningen, NL-9747 AA Groningen, Netherlands
| | - C Morales Morales
- Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - K Moriya
- Indiana University, Bloomington, Indiana 47405, USA
| | - N Yu Muchnoi
- G. I. Budker Institute of Nuclear Physics SB RAS (BINP), Novosibirsk 630090, Russia
| | - H Muramatsu
- University of Rochester, Rochester, New York 14627, USA
| | - Y Nefedov
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - I B Nikolaev
- G. I. Budker Institute of Nuclear Physics SB RAS (BINP), Novosibirsk 630090, Russia
| | - Z Ning
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S Nisar
- COMSATS Institute of Information Technology, Lahore, Defence Road, Off Raiwind Road, 54000 Lahore, Pakistan
| | - S L Olsen
- Seoul National University, Seoul, 151-747 Korea
| | - Q Ouyang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S Pacetti
- INFN and University of Perugia, I-06100, Perugia, Italy
| | - J W Park
- University of Hawaii, Honolulu, Hawaii 96822, USA
| | - M Pelizaeus
- Bochum Ruhr-University, D-44780 Bochum, Germany
| | - H P Peng
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - K Peters
- GSI Helmholtzcentre for Heavy Ion Research GmbH, D-64291 Darmstadt, Germany
| | - J L Ping
- Nanjing Normal University, Nanjing 210023, People's Republic of China
| | - R G Ping
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - R Poling
- University of Minnesota, Minneapolis, Minnesota 55455, USA
| | - E Prencipe
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - M Qi
- Nanjing University, Nanjing 210093, People's Republic of China
| | - S Qian
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - C F Qiao
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - L Q Qin
- Shandong University, Jinan 250100, People's Republic of China
| | - X S Qin
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y Qin
- Peking University, Beijing 100871, People's Republic of China
| | - Z H Qin
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J F Qiu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - K H Rashid
- University of the Punjab, Lahore-54590, Pakistan
| | - C F Redmer
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - M Ripka
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - G Rong
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X D Ruan
- GuangXi University, Nanning 530004, People's Republic of China
| | - A Sarantsev
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - S Schumann
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - W Shan
- Peking University, Beijing 100871, People's Republic of China
| | - M Shao
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - C P Shen
- Beihang University, Beijing 100191, People's Republic of China
| | - X Y Shen
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - H Y Sheng
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M R Shepherd
- Indiana University, Bloomington, Indiana 47405, USA
| | - W M Song
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X Y Song
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S Spataro
- University of Turin, I-10125, Turin, Italy and INFN, I-10125, Turin, Italy
| | - B Spruck
- Universitaet Giessen, D-35392 Giessen, Germany
| | - G X Sun
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J F Sun
- Henan Normal University, Xinxiang 453007, People's Republic of China
| | - S S Sun
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y J Sun
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Y Z Sun
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z J Sun
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z T Sun
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - C J Tang
- Sichuan University, Chengdu 610064, People's Republic of China
| | - X Tang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - I Tapan
- Uludag University, 16059 Bursa, Turkey
| | - E H Thorndike
- University of Rochester, Rochester, New York 14627, USA
| | - D Toth
- University of Minnesota, Minneapolis, Minnesota 55455, USA
| | - M Ullrich
- Universitaet Giessen, D-35392 Giessen, Germany
| | - I Uman
- Dogus University, 34722 Istanbul, Turkey
| | - G S Varner
- University of Hawaii, Honolulu, Hawaii 96822, USA
| | - B Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - D Wang
- Peking University, Beijing 100871, People's Republic of China
| | - D Y Wang
- Peking University, Beijing 100871, People's Republic of China
| | - K Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L L Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L S Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M Wang
- Shandong University, Jinan 250100, People's Republic of China
| | - P Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - P L Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Q J Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S G Wang
- Peking University, Beijing 100871, People's Republic of China
| | - X F Wang
- Tsinghua University, Beijing 100084, People's Republic of China
| | - X L Wang
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Y D Wang
- INFN Laboratori Nazionali di Frascati, I-00044, Frascati, Italy
| | - Y F Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y Q Wang
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - Z Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z G Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z H Wang
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Z Y Wang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - D H Wei
- Guangxi Normal University, Guilin 541004, People's Republic of China
| | - J B Wei
- Peking University, Beijing 100871, People's Republic of China
| | - P Weidenkaff
- Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
| | - Q G Wen
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - S P Wen
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M Werner
- Universitaet Giessen, D-35392 Giessen, Germany
| | - U Wiedner
- Bochum Ruhr-University, D-44780 Bochum, Germany
| | - L H Wu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - N Wu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S X Wu
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - W Wu
- Nankai University, Tianjin 300071, People's Republic of China
| | - Z Wu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L G Xia
- Tsinghua University, Beijing 100084, People's Republic of China
| | - Y X Xia
- Hunan University, Changsha 410082, People's Republic of China
| | - Z J Xiao
- Nanjing Normal University, Nanjing 210023, People's Republic of China
| | - Y G Xie
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Q L Xiu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - G F Xu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Q J Xu
- Hangzhou Normal University, Hangzhou 310036, People's Republic of China
| | - Q N Xu
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - X P Xu
- Soochow University, Suzhou 215006, People's Republic of China
| | - Z R Xu
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Z Xue
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - L Yan
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - W B Yan
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - W C Yan
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Y H Yan
- Hunan University, Changsha 410082, People's Republic of China
| | - H X Yang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y Yang
- Central China Normal University, Wuhan 430079, People's Republic of China
| | - Y X Yang
- Guangxi Normal University, Guilin 541004, People's Republic of China
| | - Y Z Yang
- GuangXi University, Nanning 530004, People's Republic of China
| | - H Ye
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M Ye
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M H Ye
- China Center of Advanced Science and Technology, Beijing 100190, People's Republic of China
| | - B X Yu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - C X Yu
- Nankai University, Tianjin 300071, People's Republic of China
| | - H W Yu
- Peking University, Beijing 100871, People's Republic of China
| | - J S Yu
- Lanzhou University, Lanzhou 730000, People's Republic of China
| | - S P Yu
- Shandong University, Jinan 250100, People's Republic of China
| | - C Z Yuan
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - W L Yuan
- Nanjing University, Nanjing 210093, People's Republic of China
| | - Y Yuan
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - A A Zafar
- University of the Punjab, Lahore-54590, Pakistan
| | - A Zallo
- INFN Laboratori Nazionali di Frascati, I-00044, Frascati, Italy
| | - S L Zang
- Nanjing University, Nanjing 210093, People's Republic of China
| | - Y Zeng
- Hunan University, Changsha 410082, People's Republic of China
| | - B X Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - B Y Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - C Zhang
- Nanjing University, Nanjing 210093, People's Republic of China
| | - C B Zhang
- Hunan University, Changsha 410082, People's Republic of China
| | - C C Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - D H Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - H H Zhang
- Sun Yat-Sen University, Guangzhou 510275, People's Republic of China
| | - H Y Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J Q Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J W Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J Y Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J Z Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - LiLi Zhang
- Hunan University, Changsha 410082, People's Republic of China
| | - S H Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X J Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X Y Zhang
- Shandong University, Jinan 250100, People's Republic of China
| | - Y Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y H Zhang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z P Zhang
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Z Y Zhang
- Wuhan University, Wuhan 430072, People's Republic of China
| | - Zhenghao Zhang
- Central China Normal University, Wuhan 430079, People's Republic of China
| | - G Zhao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J W Zhao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Lei Zhao
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Ling Zhao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - M G Zhao
- Nankai University, Tianjin 300071, People's Republic of China
| | - Q Zhao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - S J Zhao
- Zhengzhou University, Zhengzhou 450001, People's Republic of China
| | - T C Zhao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X H Zhao
- Nanjing University, Nanjing 210093, People's Republic of China
| | - Y B Zhao
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z G Zhao
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - A Zhemchugov
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - B Zheng
- University of South China, Hengyang 421001, People's Republic of China
| | - J P Zheng
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Y H Zheng
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - B Zhong
- Nanjing Normal University, Nanjing 210023, People's Republic of China
| | - L Zhou
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X Zhou
- Wuhan University, Wuhan 430072, People's Republic of China
| | - X K Zhou
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - X R Zhou
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - K Zhu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - K J Zhu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - X L Zhu
- Tsinghua University, Beijing 100084, People's Republic of China
| | - Y C Zhu
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Y S Zhu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - Z A Zhu
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J Zhuang
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - B S Zou
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
| | - J H Zou
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
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Ablikim M, Achasov MN, Ai XC, Albayrak O, Ambrose DJ, An FF, An Q, Bai JZ, Baldini Ferroli R, Ban Y, Becker J, Bennett JV, Bertani M, Bian JM, Boger E, Bondarenko O, Boyko I, Briere RA, Bytev V, Cai H, Cai X, Cakir O, Calcaterra A, Cao GF, Cetin SA, Chang JF, Chelkov G, Chen G, Chen HS, Chen JC, Chen ML, Chen SJ, Chen X, Chen YB, Cheng HP, Chu YP, Cronin-Hennessy D, Dai HL, Dai JP, Dedovich D, Deng ZY, Denig A, Denysenko I, Destefanis M, Ding WM, Ding Y, Dong LY, Dong MY, Du SX, Fang J, Fang SS, Fava L, Feng CQ, Friedel P, Fu CD, Fu JL, Fuks O, Gao Q, Gao Y, Geng C, Goetzen K, Gong WX, Gradl W, Greco M, Gu MH, Gu YT, Guan YH, Guo AQ, Guo LB, Guo T, Guo YP, Han YL, Harris FA, He KL, He M, He ZY, Held T, Heng YK, Hou ZL, Hu C, Hu HM, Hu JF, Hu T, Huang GM, Huang GS, Huang JS, Huang L, Huang XT, Huang Y, Huang YP, Hussain T, Ji CS, Ji Q, Ji QP, Ji XB, Ji XL, Jiang LL, Jiang XS, Jiao JB, Jiao Z, Jin DP, Jin S, Jing FF, Kalantar-Nayestanaki N, Kavatsyuk M, Kopf B, Kornicer M, Kühn W, Lai W, Lange JS, Lara M, Larin P, Leyhe M, Li CH, Li C, Li C, Li DM, Li F, Li G, Li HB, Li JC, Li K, Li L, Li QJ, Li SL, Li WD, Li WG, Li XL, Li XN, Li XQ, Li XR, Li ZB, Liang H, Liang YF, Liang YT, Liao GR, Liao XT, Lin D, Liu BJ, Liu CL, Liu CX, Liu FH, Liu F, Liu F, Liu H, Liu HB, Liu HH, Liu HM, Liu HW, Liu JP, Liu K, Liu KY, Liu K, Liu PL, Liu Q, Liu SB, Liu X, Liu YB, Liu ZA, Liu Z, Liu Z, Loehner H, Lou XC, Lu GR, Lu HJ, Lu JG, Lu QW, Lu XR, Lu YP, Luo CL, Luo MX, Luo T, Luo XL, Lv M, Ma CL, Ma FC, Ma HL, Ma QM, Ma S, Ma T, Ma XY, Maas FE, Maggiora M, Malik QA, Mao YJ, Mao ZP, Messchendorp JG, Min J, Min TJ, Mitchell RE, Mo XH, Mo YJ, Moeini H, Morales Morales C, Moriya K, Muchnoi NY, Muramatsu H, Nefedov Y, Nicholson C, Nikolaev IB, Ning Z, Olsen SL, Ouyang Q, Pacetti S, Park JW, Pelizaeus M, Peng HP, Peters K, Ping JL, Ping RG, Poling R, Prencipe E, Qi M, Qian S, Qiao CF, Qin LQ, Qin XS, Qin Y, Qin ZH, Qiu JF, Rashid KH, Rong G, Ruan XD, Sarantsev A, Schaefer BD, Shao M, Shen CP, Shen XY, Sheng HY, Shepherd MR, Song WM, Song XY, Spataro S, Spruck B, Sun DH, Sun GX, Sun JF, Sun SS, Sun YJ, Sun YZ, Sun ZJ, Sun ZT, Tang CJ, Tang X, Tapan I, Thorndike EH, Toth D, Ullrich M, Uman I, Varner GS, Wang BQ, Wang D, Wang DY, Wang K, Wang LL, Wang LS, Wang M, Wang P, Wang PL, Wang QJ, Wang SG, Wang XF, Wang XL, Wang YD, Wang YF, Wang YQ, Wang Z, Wang ZG, Wang ZY, Wei DH, Wei JB, Weidenkaff P, Wen QG, Wen SP, Werner M, Wiedner U, Wu LH, Wu N, Wu SX, Wu W, Wu Z, Xia LG, Xia YX, Xiao ZJ, Xie YG, Xiu QL, Xu GF, Xu GM, Xu QJ, Xu QN, Xu XP, Xu ZR, Xue F, Xue Z, Yan L, Yan WB, Yan YH, Yang HX, Yang Y, Yang YX, Ye H, Ye M, Ye MH, Yu BX, Yu CX, Yu HW, Yu JS, Yu SP, Yuan CZ, Yuan Y, Zafar AA, Zallo A, Zang SL, Zeng Y, Zhang BX, Zhang BY, Zhang C, Zhang CC, Zhang DH, Zhang HH, Zhang HY, Zhang JQ, Zhang JW, Zhang JY, Zhang JZ, Zhang L, Zhang R, Zhang SH, Zhang XJ, Zhang XY, Zhang Y, Zhang YH, Zhang ZP, Zhang ZY, Zhang Z, Zhao G, Zhao HS, Zhao JW, Zhao KX, Zhao L, Zhao L, Zhao MG, Zhao Q, Zhao SJ, Zhao TC, Zhao XH, Zhao YB, Zhao ZG, Zhemchugov A, Zheng B, Zheng JP, Zheng YH, Zhong B, Zhou L, Zhou X, Zhou XK, Zhou XR, Zhu C, Zhu K, Zhu KJ, Zhu SH, Zhu XL, Zhu YC, Zhu YM, Zhu YS, Zhu ZA, Zhuang J, Zou BS, Zou JH. Observation of a charged charmoniumlike structure in e+ e- → π+ π- J/ψ at sqrt[s] = 4.26 GeV. Phys Rev Lett 2013; 110:252001. [PMID: 23829729 DOI: 10.1103/physrevlett.110.252001] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2013] [Indexed: 06/02/2023]
Abstract
We study the process ee+ e- → π+ π- J/ψ at a center-of-mass energy of 4.260 GeV using a 525 pb(-1) data sample collected with the BESIII detector operating at the Beijing Electron Positron Collider. The Born cross section is measured to be (62.9±1.9±3.7) pb, consistent with the production of the Y(4260). We observe a structure at around 3.9 GeV/c2 in the π(±)J/ψ mass spectrum, which we refer to as the Z(c)(3900). If interpreted as a new particle, it is unusual in that it carries an electric charge and couples to charmonium. A fit to the π(±)J/ψ invariant mass spectrum, neglecting interference, results in a mass of (3899.0±3.6±4.9) MeV/c2 and a width of (46±10±20) MeV. Its production ratio is measured to be R = (σ(e+ e- → π(±)Z(c)(3900)(∓) → π+ π- J/ψ)/σ(e+ e- → π+ π- J/ψ)) = (21.5±3.3±7.5)%. In all measurements the first errors are statistical and the second are systematic.
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Affiliation(s)
- M Ablikim
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
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Xiao J, Zhu X, Hao GY, Zhu YC, Hou HJ, Zhang J, Ma LL, Tian Y, Zhang YH. Association between urothelial carcinoma after kidney transplantation and aristolochic acid exposure: the potential role of aristolochic acid in HRas and TP53 gene mutations. Transplant Proc 2012; 43:3751-4. [PMID: 22172840 DOI: 10.1016/j.transproceed.2011.09.069] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2011] [Revised: 09/08/2011] [Accepted: 09/16/2011] [Indexed: 11/28/2022]
Abstract
OBJECTIVE We sought to investigate the association between urothelial carcinoma (UC) after kidney transplantation and aristolochic acid (AA) exposure, and to explore the potential role of AA in HRas and TP53 gene mutations. MATERIALS AND METHODS UC was confirmed in 100 of 3790 patients who underwent kidney transplantation between January 1974 and May 2011. We retrospectively analyzed clinical data for these patients. Malignancies were identified in 136 patients (15 males and 85 females, of age range 27-71 years mean, 53.2±6.3). UC was the most common diagnosis (100/136; 73.5%). The median time from transplantation to the first confirmed diagnosis of a tumor was 34.5 months (range, 2-273). Polymerase chain reaction-based resequencing methods were used to detect mutations in the target regions of exons 2 and 3 of the HRas gene and exons 5, 6, 7, and 8 of the TP53 gene in 90 of 100 samples. RESULTS UC was identified in 53 of 380 patients exposed to AA and 47 of 3410 patients not exposed to AA (P<0.05). Pathologic examination of the UC specimens from AA-exposed patients identified heterozygous HRas changes in 3 cases, and deletion or replacement mutations in the TP53 gene in 4. No genetic mutations were observed among the control group. CONCLUSION UC after kidney transplantation significantly correlated with AA exposure; however, there seemed to be no significant difference in mutations in exons 2 and 3 of the HRas gene and those in exons 5, 6, 7, and 8 of the TP53 gene in terms of tumor development, a result that is inconsistent with previous studies.
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Affiliation(s)
- J Xiao
- Department of Urology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
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Xiao J, Zhu X, Hao GY, Zhu YC, Ma LL, Zhang YH, Tian Y. Association between urothelial carcinoma after renal transplantation and infection by human papillomavirus types 16 and 18. Transplant Proc 2011; 43:1638-40. [PMID: 21693249 DOI: 10.1016/j.transproceed.2011.03.053] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2011] [Revised: 02/11/2011] [Accepted: 03/22/2011] [Indexed: 12/25/2022]
Abstract
OBJECTIVE To explore the association between urothelial carcinoma following renal transplantation and infection by human papillomavirus (HPV) types 16 and 18. MATERIALS AND METHODS Of 3780 patients who underwent renal transplantation, we identified 90 cases of urothelial carcinoma. Tumor tissues collected from the 90 renal transplant recipients were compared with those from 30 nontransplanted patients with bladder cancer (control group) for HPV types 16 and 18 using polymerase chain reactions. RESULTS Seven transplanted patients were HPV positive: HPV-16 was detected in 3 patients with bladder cancer (3/90; 3.3%), and HPV-18 in 2 patients with bilateral pelvic ureteral carcinoma (2/90; 2.2%), and 2 patients with bladder cancer (2/90; 2.2%). Only 2 cases from the control group were HPV positive (both HPV-18; 2/30; 5%). The difference between the RTR and control groups was not significant (P > .05). CONCLUSION Malignant tumors in the urinary system following renal transplantation did not seems to be associated with infection by HPV-16 or -18.
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Affiliation(s)
- J Xiao
- Department of Urology, Beijing Friendship Hospital Affiliate of Capital Medical University, XuanWu District, Beijing, China
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115
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Sun SH, Sun HL, Zhu YC, Huang LC, Hsieh YL. Concurrent validity of Preschooler Gross Motor Quality Scale with Test of Gross Motor Development-2. Res Dev Disabil 2011; 32:1163-1168. [PMID: 21295441 DOI: 10.1016/j.ridd.2011.01.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/01/2011] [Accepted: 01/08/2011] [Indexed: 05/30/2023]
Abstract
Preschooler Gross Motor Quality Scale (PGMQ) was recently developed to evaluate motor skill quality of preschoolers. The purpose of this study was to establish the concurrent validity of PGMQ using Test of Gross Motor Development-2 (TGMD-2) as the gold standard. One hundred and thirty five preschool children aged from three to six years were recruited from three kindergartens in central Taiwan. Two independent evaluators who were unaware of each other's results evaluated all the children separately in their kindergartens using standardized setting and procedures. Concurrent validity was examined using correlation analysis with Pearson-Production Moment correlation coefficient. The results show that the total scores (r = .86, p < .001) and subscale total scores (r = .82 for locomotion, r = .76 for object manipulation, p < .001) of the two tests correlated well. Analysis of similar items in the locomotion subscale found significant but weak correlations in the running, jumping and galloping items of the two tests (r = .23-.25, p < .001). There were moderate to high correlations in hopping, sliding and leaping between the two tests (r = .52-.70, p < .001). Low to moderate correlations (r = .37-.54, p < .001) were found between the similar items in the object manipulation subscale of PGMQ and TGMD-2. Total scores of TGMD-2 also showed a high relation between the sum of the locomotion and object manipulation scores of PGMQ (r = .83, p < .001). The total scores of similar items in the locomotion subscale of PGMQ and TGMD-2 showed a similar high relation (r = .79, p < .001) likewise in the object manipulation subscale (r = .75, p < .001) The PGMQ proved to have adequate concurrent validity with TGMD-2.
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Affiliation(s)
- Shih-Heng Sun
- Department of Physical Therapy & Graduate Institute of Rehabilitation Science, China Medical University, No 91, Hseuh-Shih Road, Taichung City 404, Taiwan.
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Zhu YC, Wu SK, Cairney J. Obesity and motor coordination ability in Taiwanese children with and without developmental coordination disorder. Res Dev Disabil 2011; 32:801-807. [PMID: 21109392 DOI: 10.1016/j.ridd.2010.10.020] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2010] [Accepted: 10/25/2010] [Indexed: 05/30/2023]
Abstract
The purpose of this study was to investigate the associations between obesity and motor coordination ability in Taiwanese children with and without developmental coordination disorder (DCD). 2029 children (1078 boys, 951 girls) aged nine to ten years were chosen randomly from 14 elementary schools across Taiwan. We used bioelectrical impedance analysis to measure percentage of body fat (PBF) and the Movement Assessment Battery for Children test (MABC test) to evaluate the motor coordination ability. Using cut-off points based on PBF from past studies, boys and girls were divided into obese, overweight and normal-weight groups, respectively. In boys, total impairment scores and scores on balance subtest in the MABC were significantly higher in the obese and overweight groups when compared against the normal-weight group. Girls in the obese and the overweight groups had higher balance impairment scores than those of the normal-weight group. Among boys, the prevalence of obesity was highest in the DCD group, when compared to the borderline DCD and TD boys. A higher percentage of DCD girls were overweight and obese than TD girls. Obesity may be associated with poor motor coordination ability among boys and girls, and particularly in relation to balance ability. Children with DCD may have a higher risk to be overweight or obese in Taiwan.
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Affiliation(s)
- Yi-Ching Zhu
- Department of Physical Therapy, Graduate Institute of Rehabilitation Science, China Medical University, Taichung City 404, Taiwan
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Sun SH, Zhu YC, Shih CL, Lin CH, Wu SK. Development and initial validation of the Preschooler Gross Motor Quality Scale. Res Dev Disabil 2010; 31:1187-1196. [PMID: 20843658 DOI: 10.1016/j.ridd.2010.08.002] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2010] [Accepted: 08/10/2010] [Indexed: 05/29/2023]
Abstract
Motor skills have great impact on children in adapting to an environment and developing interpersonal interaction, cognition, and social behavior. Understanding what children can do and how they perform it is essential. Most motor tests seldom contain quality evaluation in the items or criteria. The purpose of this study was to develop and construct validity of the Preschooler Gross Motor Quality Scale (PGMQ) that included 17 items in three subscales to evaluate the quality of fundamental motor skills for the preschooler. The study designed PGMQ items and subscales according to well-described procedures, and recruited 174 children, aged 3-6 (89 boys and 85 girls) from 17 kindergartens. Two independent evaluators who were unaware of each other's results evaluated all the children separately in their kindergartens using PGMQ standardized setting and procedures and Gross Motor Scales of Peabody Developmental Motor Scales II (PDMS-II). Results of this study found significant differences between different ages and genders (Wilks'Λ=0.221, p<.001 and Wilks'Λ=0.690, p<.001 respectively). Total scores and raw scores in three subscales of PGMQ increased as age increased. Confirmatory factor analysis revealed three factors, including locomotion, manipulative ability and balance to explain 51.06% of the variance. The correlations between PGMQ and PDMS-II subscales were moderate to high (r=0.544-0.868, p<.01). The results showed satisfactory validity of PGMQ. PGMQ is useful to evaluate the development and quality of fundamental motor skills for the preschoolers.
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Affiliation(s)
- Shih-Heng Sun
- Department of Physical Therapy & Graduate Institute of Rehabilitation Science, China Medical University, Taichung 404, Taiwan
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Ablikim M, Bai JZ, Ban Y, Cai X, Chen HF, Chen HS, Chen HX, Chen JC, Chen J, Chen YB, Chu YP, Dai YS, Diao LY, Deng ZY, Dong QF, Du SX, Fang J, Fang SS, Fu CD, Gao CS, Gao YN, Gu SD, Gu YT, Guo YN, He KL, He M, Heng YK, Hou J, Hu HM, Hu JH, Hu T, Huang GS, Huang XT, Ji XB, Jiang XS, Jiang XY, Jiao JB, Jin DP, Jin S, Lai YF, Li G, Li HB, Li J, Li RY, Li SM, Li WD, Li WG, Li XL, Li XN, Li XQ, Liang YF, Liao HB, Liu BJ, Liu CX, Liu F, Liu F, Liu HH, Liu HM, Liu J, Liu JB, Liu JP, Liu J, Liu Q, Liu RG, Liu ZA, Lou YC, Lu F, Lu GR, Lu JG, Luo CL, Ma FC, Ma HL, Ma LL, Ma QM, Mao ZP, Mo XH, Nie J, Ping RG, Qi ND, Qin H, Qiu JF, Ren ZY, Rong G, Ruan XD, Shan LY, Shang L, Shen DL, Shen XY, Sheng HY, Sun HS, Sun SS, Sun YZ, Sun ZJ, Tang X, Tong GL, Wang DY, Wang L, Wang LL, Wang LS, Wang M, Wang P, Wang PL, Wang WF, Wang YF, Wang Z, Wang ZY, Wang Z, Wei CL, Wei DH, Weng Y, Wu N, Xia XM, Xie XX, Xu GF, Xu XP, Xu Y, Yan ML, Yang HX, Yang YX, Ye MH, Ye YX, Yu GW, Yuan CZ, Yuan Y, Zang SL, Zeng Y, Zhang BX, Zhang BY, Zhang CC, Zhang DH, Zhang HQ, Zhang HY, Zhang JW, Zhang JY, Zhang SH, Zhang XY, Zhang Y, Zhang ZX, Zhang ZP, Zhao DX, Zhao JW, Zhao MG, Zhao PP, Zhao WR, Zhao ZG, Zheng HQ, Zheng JP, Zheng ZP, Zhou L, Zhu KJ, Zhu QM, Zhu YC, Zhu YS, Zhu ZA, Zhuang BA, Zhuang XA, Zou BS. Anomalous line shape of the cross section for e{+}e{-}--> hadrons in the center-of-mass energy region between 3.650 and 3.872 GeV. Phys Rev Lett 2008; 101:102004. [PMID: 18851209 DOI: 10.1103/physrevlett.101.102004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2008] [Indexed: 05/26/2023]
Abstract
We observe an obvious anomalous line shape of the e;{+}e;{-}--> hadrons total cross sections in the energy region between 3.700 and 3.872 GeV. It is inconsistent with the explanation for only one simple psi(3770) resonance with a statistical significance of 7sigma. The anomalous line shape may be explained by two possible enhancements of the inclusive hadron production near the center-of-mass energies of 3.764 and 3.779 GeV, indicating that either there is likely a new structure in addition to the psi(3770) resonance around 3.773 GeV, or there are some physics effects reflecting the DD[over ] production dynamics.
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Affiliation(s)
- M Ablikim
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
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Ablikim M, Bai JZ, Ban Y, Cai X, Chen HF, Chen HS, Chen HX, Chen JC, Chen J, Chen YB, Chu YP, Dai YS, Diao LY, Deng ZY, Dong QF, Du SX, Fang J, Fang SS, Fu CD, Gao CS, Gao YN, Gu SD, Gu YT, Guo YN, Guo ZJ, Harris FA, He KL, He M, Heng YK, Hou J, Hu HM, Hu JH, Hu T, Huang XT, Ji XB, Jiang XS, Jiang XY, Jiao JB, Jin DP, Jin S, Jin Y, Lai YF, Li G, Li HB, Li J, Li RY, Li SM, Li WD, Li WG, Li XL, Li XN, Li XQ, Liang YF, Liao HB, Liu BJ, Liu CX, Liu F, Liu F, Liu HH, Liu HM, Liu J, Liu JB, Liu JP, Liu J, Liu Q, Liu RG, Liu ZA, Lou YC, Lu F, Lu GR, Lu JG, Luo CL, Ma FC, Ma HL, Ma LL, Ma QM, Mao ZP, Mo XH, Nie J, Olsen SL, Ping RG, Qi ND, Qin H, Qiu JF, Ren ZY, Rong G, Ruan XD, Shan LY, Shang L, Shen CP, Shen DL, Shen XY, Sheng HY, Sun HS, Sun SS, Sun YZ, Sun ZJ, Tang X, Tong GL, Varner GS, Wang DY, Wang L, Wang LL, Wang LS, Wang M, Wang P, Wang PL, Wang YF, Wang Z, Wang ZY, Wang Z, Wei CL, Wei DH, Wiedner U, Weng Y, Wu N, Xia XM, Xie XX, Xu GF, Xu XP, Xu Y, Yan ML, Yang HX, Yang YX, Ye MH, Ye YX, Yu GW, Yuan CZ, Yuan Y, Zang SL, Zeng Y, Zhang BX, Zhang BY, Zhang CC, Zhang DH, Zhang HQ, Zhang HY, Zhang JW, Zhang JY, Zhang SH, Zhang XY, Zhang Y, Zhang ZX, Zhang ZP, Zhao DX, Zhao JW, Zhao MG, Zhao PP, Zhao WR, Zhao ZG, Zheng HQ, Zheng JP, Zheng ZP, Zhou L, Zhu KJ, Zhu QM, Zhu YC, Zhu YS, Zhu ZA, Zhuang BA, Zhuang XA, Zou BS. Search for the invisible decay of J/psi in psi(2S) --> pi(+)pi(-) J/psi. Phys Rev Lett 2008; 100:192001. [PMID: 18518438 DOI: 10.1103/physrevlett.100.192001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2007] [Indexed: 05/26/2023]
Abstract
Using psi(2S) --> pi(+)pi(-) J/psi events in a sample of 14.0 x 10(6) psi(2S) decays collected with the BES-II detector, a search for the decay of the J/psi to invisible final states is performed. No signal is found, and an upper limit at the 90% confidence level is determined to be 1.2 x 10(-2) for the ratio B(J/psi --> invisible)/B(J/psi-->mu(+)mu(-)). This is the first search for J/psi decays to invisible final states.
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Affiliation(s)
- M Ablikim
- Institute of High Energy Physics, Beijing, PR China
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Ablikim M, Bai JZ, Bai Y, Ban Y, Cai X, Chen HF, Chen HS, Chen HX, Chen JC, Chen J, Chen XD, Chen YB, Chu YP, Dai YS, Deng ZY, Du SX, Fang J, Fu CD, Gao CS, Gao YN, Gu SD, Gu YT, Guo YN, Guo ZJ, Harris FA, He KL, He M, Heng YK, Hou J, Hu HM, Hu T, Huang GS, Huang XT, Huang YP, Ji XB, Jiang XS, Jiao JB, Jin DP, Jin S, Lai YF, Li HB, Li J, Li RY, Li WD, Li WG, Li XL, Li XN, Li XQ, Liang YF, Liao HB, Liu BJ, Liu CX, Liu F, Liu F, Liu HH, Liu HM, Liu JB, Liu JP, Liu HB, Liu J, Liu Q, Liu RG, Liu S, Liu ZA, Lu F, Lu GR, Lu JG, Luo CL, Ma FC, Ma HL, Ma LL, Ma QM, Malik MQA, Mao ZP, Mo XH, Nie J, Olsen SL, Ping RG, Qi ND, Qin H, Qiu JF, Rong G, Ruan XD, Shan LY, Shang L, Shen CP, Shen DL, Shen XY, Sheng HY, Sun HS, Sun SS, Sun YZ, Sun ZJ, Tang X, Tian JP, Tong GL, Varner GS, Wan X, Wang L, Wang LL, Wang LS, Wang P, Wang PL, Wang WF, Wang YF, Wang Z, Wang ZY, Wei CL, Wei DH, Weng Y, Wu N, Xia XM, Xie XX, Xu GF, Xu XP, Xu Y, Yan ML, Yang HX, Yang M, Yang YX, Ye MH, Ye YX, Yu CX, Yu GW, Yuan CZ, Yuan Y, Zang SL, Zeng Y, Zhang BX, Zhang BY, Zhang CC, Zhang DH, Zhang HQ, Zhang HY, Zhang JW, Zhang JY, Zhang XY, Zhang YY, Zhang ZX, Zhang ZP, Zhao DX, Zhao JW, Zhao MG, Zhao PP, Zhao ZG, Zheng HQ, Zheng JP, Zheng ZP, Zhou BZL, Zhu KJ, Zhu QM, Zhu XW, Zhu YC, Zhu YS, Zhu ZA, Zhu ZL, Zhuang BA, Zou BS. Observation of Y(2175) in J/psi --> etaphif0 (980). Phys Rev Lett 2008; 100:102003. [PMID: 18352176 DOI: 10.1103/physrevlett.100.102003] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2007] [Indexed: 05/26/2023]
Abstract
The decays of J/psi --> etaphif(0)(980)[eta --> gammagamma, phi --> K(+) K(-), f(0)(980) --> pi(+)pi(-)] are analyzed using a sample of 5.8 x 10(7) J/psi events collected with the BESII detector at the Beijing Electron-Positron Collider. A structure at around 2.18 GeV/c(2) with about 5 sigma significance is observed in the phif(0)(980) invariant mass spectrum. A fit with a Breit-Wigner function gives the peak mass and width of m = 2.186+/-0.010(stat)+/-0.006(syst) GeV/c(2) and Gamma = 0.065+/-0.023(stat)+/-0.017(syst) GeV/c(2), respectively, which are consistent with those of Y(2175), observed by the BABAR Collaboration in the initial-state radiation process e(+)e(-) --> gamma(ISR) phif(0)(980). The production branching ratio is determined to be Br(J/psi --> etaY(2175))Br(Y(2175)- -> phif(0)(980))Br(f(0)(980) --> pi(+)pi(-)) = [3.23+/-0.75(stat)+/-0.73(syst)] x 10(-4), assuming that the Y(2175) is a 1(--) state.
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Affiliation(s)
- M Ablikim
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
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Ablikim M, Bai JZ, Ban Y, Cai X, Chen HF, Chen HS, Chen HX, Chen JC, Chen J, Chen YB, Chu YP, Dai YS, Diao LY, Deng ZY, Dong QF, Du SX, Fang J, Fang SS, Fu CD, Gao CS, Gao YN, Gu SD, Gu YT, Guo YN, Guo ZJ, Harris FA, He KL, He M, Heng YK, Hou J, Hu HM, Hu JH, Hu T, Huang GS, Huang XT, Ji XB, Jiang XS, Jiang XY, Jiao JB, Jin DP, Jin S, Lai YF, Li G, Li HB, Li J, Li RY, Li SM, Li WD, Li WG, Li XL, Li XN, Li XQ, Liang YF, Liao HB, Liu BJ, Liu CX, Liu F, Liu F, Liu HH, Liu HM, Liu J, Liu JB, Liu JP, Liu JLQ, Liu RG, Liu ZA, Lou YC, Lu F, Lu GR, Lu JG, Luo CL, Ma FC, Ma HL, Ma LL, Ma QM, Mao ZP, Mo XH, Nie J, Olsen SL, Ping RG, Qi ND, Qin H, Qiu JF, Ren ZY, Rong G, Ruan XD, Shan LY, Shang L, Shen CP, Shen DL, Shen XY, Sheng HY, Sun HS, Sun SS, Sun YZ, Sun ZJ, Tang X, Tong GL, Varner GS, Wang DY, Wang L, Wang LL, Wang LS, Wang M, Wang P, Wang PL, Wang YF, Wang Z, Wang ZY, Wang Z, Wei CL, Wei DH, Weng Y, Wu N, Xia XM, Xie XX, Xu GF, Xu XP, Xu Y, Yan ML, Yang HX, Yang YX, Ye MH, Ye YX, Yu GW, Yuan CZ, Yuan Y, Zang SL, Zeng Y, Zhang BX, Zhang BY, Zhang CC, Zhang DH, Zhang HQ, Zhang HY, Zhang JW, Zhang JY, Zhang SH, Zhang XY, Zhang Y, Zhang ZX, Zhang ZP, Zhao DX, Zhao JW, Zhao MG, Zhao PP, Zhao WR, Zhao ZG, Zheng HQ, Zheng JP, Zheng ZP, Zhou L, Zhu KJ, Zhu QM, Zhu YC, Zhu YS, Zhu ZA, Zhuang BA, Zhuang XA, Zou BS. Measurement of psi2S radiative decays. Phys Rev Lett 2007; 99:011802. [PMID: 17678148 DOI: 10.1103/physrevlett.99.011802] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2006] [Indexed: 05/16/2023]
Abstract
Using 14 x 10(6) psi(2S) events accumulated at the BESII detector, we report first measurements of branching fractions or upper limits for psi(2S) decays into gammapp, gamma2(pi+pi-), gammaKS0K+pi-+c.c., gammaK+K-pi+pi-, gammaK*0K-pi++c.c., gammaK*0K*0, gammapi+pi-pp, gamma2(K+K-), gamma3(pi+pi-), and gamma2(pi+pi-)K+K- with the invariant mass of hadrons below 2.9 GeV/c2. We also report branching fractions of psi(2S) decays into 2(pi+pi-)pi0, omegapi+pi-, omegaf2(1270), b1+/-pi-/+, and pi02(pi+pi-)K+K-.
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Affiliation(s)
- M Ablikim
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
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Huang Y, Huang YL, Lai B, Zheng P, Zhu YC, Yao T. Raloxifene acutely reduces glutamate-induced intracellular calcium increase in cultured rat cortical neurons via inhibition of high-voltage-activated calcium current. Neuroscience 2007; 147:334-41. [PMID: 17543470 DOI: 10.1016/j.neuroscience.2007.04.037] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2006] [Revised: 03/09/2007] [Accepted: 04/04/2007] [Indexed: 12/20/2022]
Abstract
There is increasing evidence indicating that estrogen replacement therapy produces neuroprotective actions but has undesirable side effects on the reproductive system. Raloxifene is a selective estrogen receptor modulator that exerts estrogen agonist action in the brain while acting as an estrogen antagonist in the reproductive system. In the present study, we investigated whether raloxifene affected the glutamate-induced calcium (Ca2+) overload in rat cultured cortical neurons. The bulk cytosolic intracellular Ca2+ level was measured by using confocal microscopy with fluorescent Ca2+ probe fluo3. Whole-cell recording technique was used to observe the effects of raloxifene on N-methyl-D-aspartate (NMDA)-evoked and voltage-activated Ca2+ currents in cultured cortical neurons. Pre-exposure of cortical neurons to raloxifene (0.5 microM-10 microM) for 3 min attenuated intracellular Ca2+ increase induced by application of glutamate (300 microM) for 1 min. The action of raloxifene was reversible after washout. ICI 182,780 and thapsigargin did not block the action of raloxifene. In whole-cell recording experiments, raloxifene (10 microM) significantly reduced the amplitude of the high-voltage-activated Ca2+ current but had no effect on NMDA-evoked Ca2+ current. The present study demonstrates that raloxifene acutely reduces glutamate-induced intracellular Ca2+ increase probably via inhibition of high-voltage-activated calcium channels.
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Affiliation(s)
- Y Huang
- National Laboratory of Medical Neurobiology, Shanghai Medical College, Fudan University, Shanghai, China
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123
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Ablikim M, Bai JZ, Ban Y, Bian JG, Cai X, Chen HF, Chen HS, Chen HX, Chen JC, Chen J, Chen YB, Chi SP, Chu YP, Cui XZ, Dai YS, Deng ZY, Dong LY, Dong QF, Du SX, Du ZZ, Fang J, Fang SS, Fu CD, Gao CS, Gao YN, Gu SD, Gu YT, Guo YN, Guo YQ, He KL, He M, Heng YK, Hu HM, Hu T, Huang XP, Huang XT, Ji XB, Jiang XS, Jiao JB, Jin DP, Jin S, Jin Y, Lai YF, Li G, Li HB, Li HH, Li J, Li RY, Li SM, Li WD, Li WG, Li XL, Li XQ, Li YL, Liang YF, Liao HB, Liu CX, Liu F, Liu F, Liu HH, Liu HM, Liu J, Liu JB, Liu JP, Liu RG, Liu ZA, Lu F, Lu GR, Lu HJ, Lu JG, Luo CL, Ma FC, Ma HL, Ma LL, Ma QM, Ma XB, Mao ZP, Mo XH, Nie J, Peng HP, Qi ND, Qin H, Qiu JF, Ren ZY, Rong G, Shan LY, Shang L, Shen DL, Shen XY, Sheng HY, Shi F, Shi X, Sun HS, Sun JF, Sun SS, Sun YZ, Sun ZJ, Tan ZQ, Tang X, Tian YR, Tong GL, Wang DY, Wang L, Wang LS, Wang M, Wang P, Wang PL, Wang WF, Wang YF, Wang Z, Wang ZY, Wang Z, Wang Z, Wei CL, Wei DH, Wu N, Xia XM, Xie XX, Xin B, Xu GF, Xu Y, Yan ML, Yang F, Yang HX, Yang J, Yang YX, Ye MH, Ye YX, Yi ZY, Yu GW, Yuan CZ, Yuan JM, Yuan Y, Zang SL, Zeng Y, Zeng Y, Zhang BX, Zhang BY, Zhang CC, Zhang DH, Zhang HY, Zhang JW, Zhang JY, Zhang QJ, Zhang XM, Zhang XY, Zhang Y, Zhang ZP, Zhang ZQ, Zhao DX, Zhao JW, Zhao MG, Zhao PP, Zhao WR, Zheng HQ, Zheng JP, Zheng ZP, Zhou L, Zhou NF, Zhu KJ, Zhu QM, Zhu YC, Zhu YS, Zhu Y, Zhu ZA, Zhuang BA, Zhuang XA, Zou BS. Measurements of the continuum R(uds) and R values in e(+)e(-) annihilation in the energy region between 3.650 and 3.872 GeV. Phys Rev Lett 2006; 97:262001. [PMID: 17280420 DOI: 10.1103/physrevlett.97.262001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2006] [Indexed: 05/13/2023]
Abstract
We report measurements of the continuum R(uds) near the center-of-mass energy of 3.70 GeV, the R[uds(c)+psi(3770)](s) and the R(had)(s) values in e(+)e(-) annihilation at 68 energy points in the energy region between 3.650 and 3.872 GeV with the BES-II detector at the BEPC Collider. We obtain the R(uds) for the continuum light hadron (containing u, d, and s quarks) production near the DD threshold to be R(uds)=2.141+/-0.025+/-0.085.
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Affiliation(s)
- M Ablikim
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
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Ablikim M, Bai JZ, Ban Y, Bian JG, Cai X, Chen HF, Chen HS, Chen HX, Chen JC, Chen J, Chen YB, Chi SP, Chu YP, Cui XZ, Dai YS, Diao LY, Deng ZY, Dong QF, Du SX, Fang J, Fang SS, Fu CD, Gao CS, Gao YN, Gu SD, Gu YT, Guo YN, Guo YQ, Guo ZJ, Harris FA, He KL, He M, Heng YK, Hu HM, Hu T, Huang GS, Huang XT, Ji XB, Jiang XS, Jiang XY, Jiao JB, Jin DP, Jin S, Jin Y, Lai YF, Li G, Li HB, Li HH, Li J, Li RY, Li SM, Li WD, Li WG, Li XL, Li XN, Li XQ, Li YL, Liang YF, Liao HB, Liu BJ, Liu CX, Liu F, Liu F, Liu HH, Liu HM, Liu J, Liu JB, Liu JP, Liu Q, Liu RG, Liu ZA, Lou YC, Lu F, Lu GR, Lu JG, Luo CL, Ma FC, Ma HL, Ma LL, Ma QM, Ma XB, Mao ZP, Mo XH, Nie J, Olsen SL, Peng HP, Ping RG, Qi ND, Qin H, Qiu JF, Ren ZY, Rong G, Shan LY, Shang L, Shen CP, Shen DL, Shen XY, Sheng HY, Sun HS, Sun JF, Sun SS, Sun YZ, Sun ZJ, Tan ZQ, Tang X, Tong GL, Varner GS, Wang DY, Wang L, Wang LL, Wang LS, Wang M, Wang P, Wang PL, Wang WF, Wang YF, Wang Z, Wang ZY, Wang Z, Wang Z, Wei CL, Wei DH, Wu N, Xia XM, Xie XX, Xu GF, Xu XP, Xu Y, Yan ML, Yang HX, Yang YX, Ye MH, Ye YX, Yi ZY, Yu GW, Yuan CZ, Yuan JM, Yuan Y, Zang SL, Zeng Y, Zeng Y, Zhang BX, Zhang BY, Zhang CC, Zhang DH, Zhang HQ, Zhang HY, Zhang JW, Zhang JY, Zhang SH, Zhang XM, Zhang XY, Zhang Y, Zhang ZP, Zhao DX, Zhao JW, Zhao MG, Zhao PP, Zhao WR, Zhao ZG, Zheng HQ, Zheng JP, Zheng ZP, Zhou L, Zhou NF, Zhu KJ, Zhu QM, Zhu YC, Zhu YS, Zhu Y, Zhu ZA, Zhuang BA, Zhuang XA, Zou BS. Search for invisible decays of eta and eta' in J/psi --> phi eta and phi eta'. Phys Rev Lett 2006; 97:202002. [PMID: 17155676 DOI: 10.1103/physrevlett.97.202002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2006] [Indexed: 05/12/2023]
Abstract
Using a data sample of 58 x 10(6) J/psi decays collected with the Beijing Spectrometer II detector at the Beijing Electron Positron Collider, searches for invisible decays of eta and eta' in J/psi to phi eta and phi eta' are performed. The phi signals, which are reconstructed in K+K- final states, are used to tag the eta and eta' decays. No signals are found for the invisible decays of either eta or eta', and upper limits at the 90% confidence level are determined to be 1.65 x 10(-3) for the ratio B(eta-->invisible)/B(eta --> gamma gamma) and 6.69 x 10(-2) for B(eta' --> invisible)/B(eta' --> gammagamma). These are the first searches for eta and eta' decays into invisible final states.
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Affiliation(s)
- M Ablikim
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
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125
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Ablikim M, Bai JZ, Ban Y, Cai X, Chen HF, Chen HS, Chen HX, Chen JC, Chen J, Chen YB, Chi SP, Chu YP, Cui XZ, Dai YS, Deng ZY, Dong LY, Dong QF, Du SX, Du ZZ, Fang J, Fang SS, Fu CD, Gao CS, Gao YN, Gu SD, Gu YT, Guo YN, Guo YQ, Guo ZJ, Harris FA, He KL, He M, Heng YK, Hu HM, Hu T, Huang GS, Huang XP, Huang XT, Ji XB, Jiang XS, Jiao JB, Jin DP, Jin S, Jin Y, Lai YF, Li G, Li HB, Li HH, Li J, Li RY, Li SM, Li WD, Li WG, Li XL, Li XQ, Li YL, Liang YF, Liao HB, Liu CX, Liu F, Liu F, Liu HH, Liu HM, Liu J, Liu JB, Liu JP, Liu RG, Liu ZA, Lu F, Lu GR, Lu HJ, Lu JG, Luo CL, Ma FC, Ma HL, Ma LL, Ma QM, Ma XB, Mao ZP, Mo XH, Nie J, Olsen SL, Peng HP, Qi ND, Qin H, Qiu JF, Ren ZY, Rong G, Shan LY, Shang L, Shen DL, Shen XY, Sheng HY, Shi F, Shi X, Sun HS, Sun JF, Sun SS, Sun YZ, Sun ZJ, Tan ZQ, Tang X, Tian YR, Tong GL, Varner GS, Wang DY, Wang L, Wang LS, Wang M, Wang P, Wang PL, Wang WF, Wang YF, Wang Z, Wang ZY, Wang Z, Wang Z, Wei CL, Wei DH, Wu N, Xia XM, Xie XX, Xin B, Xu GF, Xu Y, Yan ML, Yang F, Yang HX, Yang J, Yang YX, Ye MH, Ye YX, Yi ZY, Yu GW, Yuan CZ, Yuan JM, Yuan Y, Zang SL, Zeng Y, Zeng Y, Zhang BX, Zhang BY, Zhang CC, Zhang DH, Zhang HY, Zhang JW, Zhang JY, Zhang QJ, Zhang XM, Zhang XY, Zhang YY, Zhang ZP, Zhang ZQ, Zhao DX, Zhao JW, Zhao MG, Zhao PP, Zhao WR, Zhao ZG, Zheng HQ, Zheng JP, Zheng ZP, Zhou L, Zhou NF, Zhu KJ, Zhu QM, Zhu YC, Zhu Y, Zhu YS, Zhu ZA, Zhuang BA, Zhuang XA, Zou BS. Observation of a broad 1-- resonant structure around 1.5 GeV/c2 in the K+K- mass spectrum in J/psi-->K+K-pi0. Phys Rev Lett 2006; 97:142002. [PMID: 17155241 DOI: 10.1103/physrevlett.97.142002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2006] [Indexed: 05/12/2023]
Abstract
A broad peak is observed at low K+K- invariant mass in J/psi-->K+K-pi(0) decays found in a sample of 5.8x10(7) J/psi events collected with the BESII detector. The statistical significance of the broad resonance is much larger than 5sigma. A partial wave analysis shows that the J;{PC} of this structure is 1--. Its pole position is determined to be [1576(-55)(+49)(stat)-91+98(syst)] MeV/c(2)-i/2[818(-23)(+22)(stat)-133+64(syst)] MeV/c(2). These parameters are not compatible with any known meson resonances.
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Affiliation(s)
- M Ablikim
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
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126
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Ablikim M, Bai JZ, Ban Y, Bian JG, Cai X, Chen HF, Chen HS, Chen HX, Chen JC, Chen J, Chen YB, Chi SP, Chu YP, Cui XZ, Dai YS, Deng ZY, Dong LY, Dong QF, Du SX, Du ZZ, Fang J, Fang SS, Fu CD, Gao CS, Gao YN, Gu SD, Gu YT, Guo YN, Guo YQ, He KL, He M, Heng YK, Hu HM, Hu T, Huang XP, Huang XT, Ji XB, Jiang XS, Jiao JB, Jin DP, Jin S, Jin Y, Lai YF, Li G, Li HB, Li HH, Li J, Li RY, Li SM, Li WD, Li WG, Li XL, Li XQ, Li YL, Liang YF, Liao HB, Liu CX, Liu F, Liu F, Liu HH, Liu HM, Liu J, Liu JB, Liu JP, Liu RG, Liu ZA, Lu F, Lu GR, Lu HJ, Lu JG, Luo CL, Ma FC, Ma HL, Ma LL, Ma QM, Ma XB, Mao ZP, Mo XH, Nie J, Peng HP, Qi ND, Qin H, Qiu JF, Ren ZY, Rong G, Shan LY, Shang L, Shen DL, Shen XY, Sheng HY, Shi F, Shi X, Sun HS, Sun JF, Sun SS, Sun YZ, Sun ZJ, Tan ZQ, Tang X, Tian YR, Tong GL, Wang DY, Wang L, Wang LS, Wang M, Wang P, Wang PL, Wang WF, Wang YF, Wang Z, Wang ZY, Wang Z, Wang Z, Wei CL, Wei DH, Wu N, Xia XM, Xie XX, Xin B, Xu GF, Xu Y, Yan ML, Yang F, Yang HX, Yang J, Yang YX, Ye MH, Ye YX, Yi ZY, Yu GW, Yuan CZ, Yuan JM, Yuan Y, Zang SL, Zeng Y, Zeng Y, Zhang BX, Zhang BY, Zhang CC, Zhang DH, Zhang HY, Zhang JW, Zhang JY, Zhang QJ, Zhang XM, Zhang XY, Zhang Y, Zhang ZP, Zhang ZQ, Zhao DX, Zhao JW, Zhao MG, Zhao PP, Zhao WR, Zheng HQ, Zheng JP, Zheng ZP, Zhou L, Zhou NF, Zhu KJ, Zhu QM, Zhu YC, Zhu YS, Zhu Y, Zhu ZA, Zhuang BA, Zhuang XA, Zou BS. Measurements of the branching fractions for psi(3770)-->D(0)D[over ](0), D+D-, DD[over ], and the resonance parameters of psi(3770) and psi(2S). Phys Rev Lett 2006; 97:121801. [PMID: 17025950 DOI: 10.1103/physrevlett.97.121801] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2006] [Indexed: 05/12/2023]
Abstract
We measure the branching fractions for psi(3770)-->D(0)D[over ](0), D+D-, DD[over ], and non-DD[over ] to be (46.7+/-4.7+/-2.3)%, (36.9+/-3.7+/-2.8)%, (83.6+/-7.3+/-4.2)%, and (16.4+/-7.3+/-4.2)%, respectively. The resonance parameters of psi(3770) and psi(2S) are measured to be M_(psi(3770))=3772.2+/-0.7+/-0.3 MeV, Gamma_(psi(3770))(tot)=26.9+/-2.4+/-0.3 MeV, and Gamma_(psi(3770))(ee)=251+/-26+/-11 eV; M_(psi(2S))=3685.5+/-0.0+/-0.3 MeV, Gamma_(psi(2S))(tot)=331+/-58+/-2 keV, and Gamma_(psi(2S))(ee)=2.330+/-0.036+/-0.110 keV. We also measure the light hadron R value to be R(uds)=2.262+/-0.054+/-0.109 in the energy region from 3.660 to 3.872 GeV.
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Affiliation(s)
- M Ablikim
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
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Lu YP, Zhu YC, Liang MZ, Nan F, Yu Q, Wang L, Wang J, Li YP. Therapeutic Drug Monitoring of Mycophenolic Acid Can Be Used as Predictor of Clinical Events for Kidney Transplant Recipients Treated With Mycophenolate Mofetil. Transplant Proc 2006; 38:2048-50. [PMID: 16979995 DOI: 10.1016/j.transproceed.2006.06.028] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
OBJECTIVE This study was designed to investigate the relationship between clinical events and the pharmacokinetics of mycophenolic acid (MPA) in adult renal transplant patients. METHODS Thirty-seven adult kidney transplant recipients received a cyclosporine, mycophenolate mofetil, and steroids. MPA-AUC(0-12) was obtained before and 12 days after grafting by RP-HPLC. Predose blood samples were measured for MPA-C(0) were gathered from all the recipients at 4, 12, and 21 days as well as 1, 1.5, 2, 2.5, 3, and 6 months after grafting. The clinical events at corresponding time points were recorded to correlate with each MPA-C(0) value. RESULTS In addition to single-dose and multidose MPA-AUC(0-12), 357 MPA-C(0) values were obtained from 37 patients. The 357 units were divided into three subgroups: group A patients, including 239 units (66.9%), experienced uneventful outcomes; group B of 100 units (28.0%) showed MPA-related side effects, and group C, 18 units (5.0%) of acute rejection episodes. MPA-C(0) for groups A, B, and C were 0.8416 +/- 0.1373 mg/L, 1.5903 +/- 0.3741 mg/L and 0.6057 +/- 0.2338 mg/L, respectively (P < .001 between groups A and B, groups B and C, and P = .021 between groups A and C). The three groups were also divided into an initial phase (< or =1 month, 251 units) and a stable phase (>1 month, 106 units). The relationship between MPA-C(0) and associated clinical events was also investigated. CONCLUSION Our results suggested a relationship between MPA pharmacokinetics and clinical events. The MPA-C(0) might be an appropriate pharmacokinetic monitoring parameter for kidney transplantation.
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Affiliation(s)
- Y P Lu
- Transplantation Institute, West China Hospital, Sichuan University, Guoxuexiang 37, Chengdu, China 610041.
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Ablikim M, Bai JZ, Ban Y, Bian JG, Cai X, Chang JF, Chen HF, Chen HS, Chen HX, Chen JC, Chen J, Chen J, Chen ML, Chen YB, Chi SP, Chu YP, Cui XZ, Dai HL, Dai YS, Deng ZY, Dong LY, Du SX, Du ZZ, Fang J, Fang SS, Fu CD, Fu HY, Gao CS, Gao YN, Gong MY, Gong WX, Gu SD, Guo YN, Guo YQ, Guo ZJ, Harris FA, He KL, He M, He X, Heng YK, Hu HM, Hu T, Huang GS, Huang L, Huang XP, Ji XB, Jia QY, Jiang CH, Jiang XS, Jin DP, Jin S, Jin Y, Lai YF, Li F, Li G, Li HB, Li HH, Li J, Li JC, Li QJ, Li RB, Li RY, Li SM, Li WG, Li XL, Li XQ, Li XS, Liang YF, Liao HB, Liu CX, Liu F, Liu F, Liu HM, Liu JB, Liu JP, Liu RG, Liu ZA, Liu ZX, Lu F, Lu GR, Lu JG, Luo CL, Luo XL, Ma FC, Ma JM, Ma LL, Ma QM, Ma XY, Mao ZP, Mo XH, Nie J, Nie ZD, Olsen SL, Peng HP, Qi ND, Qian CD, Qin H, Qiu JF, Ren ZY, Rong G, Shan LY, Shang L, Shen DL, Shen XY, Sheng HY, Shi F, Shi X, Sun HS, Sun SS, Sun YZ, Sun ZJ, Tang X, Tao N, Tian YR, Tong GL, Varner GS, Wang DY, Wang JX, Wang JZ, Wang K, Wang L, Wang LS, Wang M, Wang P, Wang PL, Wang SZ, Wang WF, Wang YF, Wang Z, Wang Z, Wang Z, Wang ZY, Wei CL, Wei DH, Wu N, Wu YM, Xia XM, Xie XX, Xin B, Xu GF, Xu H, Xu Y, Xue ST, Yan ML, Yang F, Yang HX, Yang J, Yang SD, Yang YX, Ye M, Ye MH, Ye YX, Yi LH, Yi ZY, Yu CS, Yu GW, Yuan CZ, Yuan JM, Yuan Y, Yue Q, Zang SL, Zeng Y, Zeng Y, Zhang BX, Zhang BY, Zhang CC, Zhang DH, Zhang HY, Zhang J, Zhang JY, Zhang JW, Zhang LS, Zhang QJ, Zhang SQ, Zhang XM, Zhang XY, Zhang YJ, Zhang YY, Zhang Y, Zhang ZP, Zhang ZQ, Zhao DX, Zhao JB, Zhao JW, Zhao MG, Zhao PP, Zhao WR, Zhao XJ, Zhao YB, Zhao ZG, Zheng HQ, Zheng JP, Zheng LS, Zheng ZP, Zhong XC, Zhou BQ, Zhou GM, Zhou L, Zhou NF, Zhu KJ, Zhu QM, Zhu YC, Zhu YS, Zhu Y, Zhu ZA, Zhuang BA, Zou BS. Observation of two new N* peaks in J/psi-->ppi-n and ppi+n decays. Phys Rev Lett 2006; 97:062001. [PMID: 17026161 DOI: 10.1103/physrevlett.97.062001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2004] [Indexed: 05/12/2023]
Abstract
The decay J/psi-->NNpi provides an effective isospin 1/2 filter for the piN system due to isospin conservation. Using 58x10(6) J/psi decays collected with the Beijing Electromagnetic Spectrometer at the Beijing Electron Positron Collider, more than 100 thousand J/psi-->ppi-n+c.c. events are obtained. Besides the two well-known N* peaks at around 1500 MeV/c2 and 1670 MeV/c2, there are two new, clear N* peaks in the ppi invariant mass spectrum around 1360 MeV/c2 and 2030 MeV/c2 with statistical significance of 11sigma and 13sigma, respectively. We identify these as the first direct observation of the N*(1440) peak and a long-sought missing N* peak above 2 GeV/c2 in the piN invariant mass spectrum.
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Affiliation(s)
- M Ablikim
- Institute of High Energy Physics, Beijing 100039, People's Republic of China
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Maddur AA, Liu X, Zhu YC, Fellers JP, Oppert B, Park Y, Bai J, Wilde GE, Chen MS. Cloning and characterization of protease inhibitor-like cDNAs from the Hessian fly mayetiola destructor (SAY). Insect Mol Biol 2006; 15:485-96. [PMID: 16907835 DOI: 10.1111/j.1365-2583.2006.00660.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Analysis of transcriptomes from the salivary glands and midgut of Hessian fly larvae Mayetiola destructor (say) identified a set of diverse cDNAs that encode proteins with a relatively high percentage (over 10%) of cysteinyl residues. Structural comparison of these putative proteins with known sequences in GenBank revealed that the positions of the cysteinyl residues in the identified proteins were highly conserved within a family of proteinase inhibitors despite very little overall sequence similarity. Phylogenetic analysis sorted this set of cDNAs into five different groups. To determine if these cDNAs indeed encode proteinase inhibitors, recombinant proteins were generated with two cDNAs from two different groups. Biochemical analysis of the recombinant proteins against commercial and insect gut proteinases demonstrated that the recombinant proteins are strong proteinase inhibitors with different specificities. Northern blot and real-time PCR analysis revealed that the different genes were expressed at different developmental stages and in different tissues. The overall results indicated that M. destructor contains a complex of genes that code for proteinase inhibitors which may regulate proteinase activities in different regulatory pathways. The GenBank accession numbers for the cDNAs in this paper were DQ232690 to DQ232718.
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Affiliation(s)
- A A Maddur
- Department of Entomology, Kansas State University, Manhattan, KS 66506, USA
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Ablikim M, Bai JZ, Ban Y, Bian JG, Cai X, Chen HF, Chen HS, Chen HX, Chen JC, Chen J, Chen YB, Chi SP, Chu YP, Cui XZ, Dai YS, Diao LY, Deng ZY, Dong QF, Du SX, Fang J, Fang SS, Fu CD, Gao CS, Gao YN, Gu SD, Gu YT, Guo YN, Guo YQ, Guo ZJ, Harris FA, He KL, He M, Heng YK, Hu HM, Hu T, Huang GS, Huang XT, Ji XB, Jiang XS, Jiang XY, Jiao JB, Jin DP, Jin S, Jin Y, Lai YF, Li G, Li HB, Li HH, Li J, Li RY, Li SM, Li WD, Li WG, Li XL, Li XN, Li XQ, Li YL, Liang YF, Liao HB, Liu BJ, Liu CX, Liu F, Liu F, Liu HH, Liu HM, Liu J, Liu JB, Liu JP, Liu Q, Liu RG, Liu ZA, Lou YC, Lu F, Lu GR, Lu JG, Luo CL, Ma FC, Ma HL, Ma LL, Ma QM, Ma XB, Mao ZP, Mo XH, Nie J, Olsen SL, Peng HP, Ping RG, Qi ND, Qin H, Qiu JF, Ren ZY, Rong G, Shan LY, Shang L, Shen CP, Shen DL, Shen XY, Sheng HY, Sun HS, Sun JF, Sun SS, Sun YZ, Sun ZJ, Tan ZQ, Tang X, Tong GL, Varner GS, Wang DY, Wang L, Wang LL, Wang LS, Wang M, Wang P, Wang PL, Wang WF, Wang YF, Wang Z, Wang ZY, Wang Z, Wang Z, Wei CL, Wei DH, Wu N, Xia XM, Xie XX, Xu GF, Xu XP, Xu Y, Yan ML, Yang HX, Yang YX, Ye MH, Ye YX, Yi ZY, Yu GW, Yuan CZ, Yuan JM, Yuan Y, Zang SL, Zeng Y, Zeng Y, Zhang BX, Zhang BY, Zhang CC, Zhang DH, Zhang HQ, Zhang HY, Zhang JW, Zhang JY, Zhang SH, Zhang XM, Zhang XY, Zhang Y, Zhang ZP, Zhao DX, Zhao JW, Zhao MG, Zhao PP, Zhao WR, Zhao ZG, Zheng HQ, Zheng JP, Zheng ZP, Zhou L, Zhou NF, Zhu KJ, Zhu QM, Zhu YC, Zhu YS, Zhu Y, Zhu ZA, Zhuang BA, Zhuang XA, Zou BS. Observation of a near-threshold enhancement in the omega(phi) mass spectrum from the doubly OZI-suppressed decay J/psi-->gamma(omega)phi. Phys Rev Lett 2006; 96:162002. [PMID: 16712215 DOI: 10.1103/physrevlett.96.162002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2006] [Indexed: 05/09/2023]
Abstract
An enhancement near threshold is observed in the omega(phi) invariant mass spectrum from the doubly Okubo-Zweig-Iizuka-suppressed decays of J/psi-->gamma(omega)phi, based on a sample of 5.8 x 10(7) J/psi events collected with the BESII detector. A partial wave analysis shows that this enhancement favors JP=0+, and its mass and width are M=1812(+19)(-26)(stat)+/-18(syst) MeV/c2 and Gamma=105+/-20(stat)+/-28(syst) MeV/c2. The product branching fraction is determined to be B(J/psi-->gammaX)B(X-->omega(phi))=[2.61+/-0.27(stat)+/-0.65(syst)]x10(-4).
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Affiliation(s)
- M Ablikim
- Institute of High Energy Physics, Beijing 100049, People's Republic of China
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Ablikim M, Bai JZ, Ban Y, Bian JG, Cai X, Chen HF, Chen HS, Chen HX, Chen JC, Chen J, Chen YB, Chi SP, Chu YP, Cui XZ, Dai YS, Deng ZY, Dong LY, Dong QF, Du SX, Du ZZ, Fang J, Fang SS, Fu CD, Gao CS, Gao YN, Gu SD, Gu YT, Guo YN, Guo YQ, Guo ZJ, Harris FA, He KL, He M, Heng YK, Hu HM, Hu T, Huang GS, Huang XP, Huang XT, Ji XB, Jiang XS, Jiao JB, Jin DP, Jin S, Jin Y, Lai YF, Li G, Li HB, Li HH, Li J, Li RY, Li SM, Li WD, Li WG, Li XL, Li XQ, Li YL, Liang YF, Liao HB, Liu CX, Liu F, Liu F, Liu HH, Liu HM, Liu J, Liu JB, Liu JP, Liu RG, Liu ZA, Lu F, Lu GR, Lu HJ, Lu JG, Luo CL, Ma FC, Ma HL, Ma LL, Ma QM, Ma XB, Mao ZP, Mo XH, Nie J, Olsen SL, Peng HP, Qi ND, Qin H, Qiu JF, Ren ZY, Rong G, Shan LY, Shang L, Shen DL, Shen XY, Sheng HY, Shi F, Shi X, Sun HS, Sun JF, Sun SS, Sun YZ, Sun ZJ, Tan ZQ, Tang X, Tian YR, Tong GL, Varner GS, Wang DY, Wang L, Wang LS, Wang M, Wang P, Wang PL, Wang WF, Wang YF, Wang Z, Wang ZY, Wang Z, Wang Z, Wei CL, Wei DH, Wu N, Xia XM, Xie XX, Xin B, Xu GF, Xu Y, Yan ML, Yang F, Yang HX, Yang J, Yang YX, Ye MH, Ye YX, Yi ZY, Yu GW, Yuan CZ, Yuan JM, Yuan Y, Zang SL, Zeng Y, Zeng Y, Zhang BX, Zhang BY, Zhang CC, Zhang DH, Zhang HY, Zhang JW, Zhang JY, Zhang QJ, Zhang XM, Zhang XY, Zhang YY, Zhang ZP, Zhang ZQ, Zhao DX, Zhao JW, Zhao MG, Zhao PP, Zhao WR, Zhao ZG, Zheng HQ, Zheng JP, Zheng ZP, Zhou L, Zhou NF, Zhu KJ, Zhu QM, Zhu YC, Zhu Y, Zhu YS, Zhu ZA, Zhuang BA, Zhuang XA, Zou BS. Observation of a resonance in Chi(1835) in J/psi --> gammapi+ pi- eta-. Phys Rev Lett 2005; 95:262001. [PMID: 16486345 DOI: 10.1103/physrevlett.95.262001] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2005] [Indexed: 05/06/2023]
Abstract
The decay channel J/psi --> gamma(pi)(+)pi(-)eta is analyzed using a sample of 5.8 x 10(7) J/psi events collected with the BESII detector. A resonance, the Chi(1835), is observed in the pi(+)pi(-)eta invariant-mass spectrum with a statistical significance of 7.7 sigma. A fit with a Breit-Wigner function yields a mass M = 1833.7 +/- 6.1(stat) +/- 2.7(syst) MeV/c(2), a width Tau = 67.7 +/- 20.3(stat) +/- 7.7(syst) MeV/c(2), and a product branching fraction B(J/psi --> gammaChi) . B(Chi --> pi(+)pi(-)eta) = [2.2 +/- 0.4(stat) +/- 0.4(syst)] x 10(-4). The mass and width of the Chi(1835) are not compatible with any known meson resonance. Its properties are consistent with expectations for the state that produces the strong pp mass threshold enhancement observed in the J/psi --> gammapp process at BESII.
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Affiliation(s)
- M Ablikim
- Institute of High Energy Physics, Beijing, People's Republic of China
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Ablikim M, Bai JZ, Ban Y, Bian JG, Cai X, Chang JF, Chen HF, Chen HS, Chen HX, Chen JC, Chen J, Chen J, Chen ML, Chen YB, Chi SP, Chu YP, Cui XZ, Dai HL, Dai YS, Deng ZY, Dong LY, Du SX, Du ZZ, Fang J, Fang SS, Fu CD, Fu HY, Gao CS, Gao YN, Gong MY, Gong WX, Gu SD, Guo YN, Guo YQ, Guo ZJ, Harris FA, He KL, He M, He X, Heng YK, Hu HM, Hu T, Huang GS, Huang L, Huang XP, Ji XB, Jia QY, Jiang CH, Jiang XS, Jin DP, Jin S, Jin Y, Lai YF, Li F, Li G, Li HH, Li J, Li JC, Li QJ, Li RB, Li RY, Li SM, Li WG, Li XL, Li XQ, Li XS, Liang YF, Liao HB, Liu CX, Liu F, Liu F, Liu HM, Liu JB, Liu JP, Liu RG, Liu ZA, Liu ZX, Lu F, Lu GR, Lu JG, Luo CL, Luo XL, Ma FC, Ma JM, Ma LL, Ma QM, Ma XY, Mao ZP, Mo XH, Nie J, Nie ZD, Olsen SL, Peng HP, Qi ND, Qian CD, Qin H, Qiu JF, Ren ZY, Rong G, Shan LY, Shang L, Shen DL, Shen XY, Sheng HY, Shi F, Shi X, Sun HS, Sun SS, Sun YZ, Sun ZJ, Tang X, Tao N, Tian YR, Tong GL, Varner GS, Wang DY, Wang JX, Wang JZ, Wang K, Wang L, Wang LS, Wang M, Wang P, Wang PL, Wang SZ, Wang WF, Wang YF, Wang Z, Wang Z, Wang Z, Wang ZY, Wei CL, Wei DH, Wu N, Wu YM, Xia XM, Xie XX, Xin B, Xu GF, Xu H, Xu Y, Xue ST, Yan ML, Yang F, Yang HX, Yang J, Yang SD, Yang YX, Ye M, Ye MH, Ye YX, Yi LH, Yi ZY, Yu CS, Yu GW, Yuan CZ, Yuan JM, Yuan Y, Yue Q, Zang SL, Zeng Y, Zeng Y, Zhang BX, Zhang BY, Zhang CC, Zhang DH, Zhang HY, Zhang J, Zhang JY, Zhang JW, Zhang LS, Zhang QJ, Zhang SQ, Zhang XM, Zhang XY, Zhang YJ, Zhang YY, Zhang Y, Zhang ZP, Zhang ZQ, Zhao DX, Zhao JB, Zhao JW, Zhao MG, Zhao PP, Zhao WR, Zhao XJ, Zhao YB, Zhao ZG, Zheng HQ, Zheng JP, Zheng LS, Zheng ZP, Zhong XC, Zhou BQ, Zhou GM, Zhou L, Zhou NF, Zhu KJ, Zhu QM, Zhu YC, Zhu YS, Zhu Y, Zhu ZA, Zhuang BA, Zou BS. Observation of a threshold enhancement in the plambda invariant-mass spectrum. Phys Rev Lett 2004; 93:112002. [PMID: 15447331 DOI: 10.1103/physrevlett.93.112002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2004] [Indexed: 05/24/2023]
Abstract
An enhancement near the m(p)+M(Lambda) mass threshold is observed in the combined pLambda and pLambda invariant-mass spectrum from J/psi-->pK(-)Lambda;+c.c. decays. It can be fit with an S-wave Breit-Wigner resonance with a mass m=2075+/-12(stat)+/-5(syst) MeV and a width of Gamma=90+/-35(stat)+/-9(syst) MeV; it can also be fit with a P-wave Breit-Wigner resonance. Evidence for a similar enhancement is also observed in psi(')-->pK(-)Lambda;+c.c. decays. The analysis is based on samples of 5.8x10(7)J/psi and 1.4x10(7)psi(') decays accumulated in the BES II detector at the Beijing Electron-Positron Collider.
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Affiliation(s)
- M Ablikim
- Institute of High Energy Physics, Beijing 100039, People's Republic of China
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Bai JZ, Ban Y, Bian JG, Cai X, Chang JF, Chen HF, Chen HS, Chen HX, Chen J, Chen JC, Chen J, Chen ML, Chen YB, Chi SP, Chu YP, Cui XZ, Dai HL, Dai YS, Deng ZY, Dong LY, Du SX, Du ZZ, Fang J, Fang SS, Fu CD, Fu HY, Fu LP, Gao CS, Gao ML, Gao YN, Gong MY, Gong WX, Gu SD, Guo YN, Guo YQ, Guo ZJ, Han SW, Harris FA, He J, He KL, He M, He X, Heng YK, Hu HM, Hu T, Huang GS, Huang L, Huang XP, Ji XB, Jia QY, Jiang CH, Jiang XS, Jin DP, Jin S, Jin Y, Lai YF, Li F, Li G, Li HH, Li J, Li JC, Li QJ, Li RB, Li RY, Li SM, Li W, Li WG, Li XL, Li XQ, Li XS, Liang YF, Liao HB, Liu CX, Liu F, Liu F, Liu HM, Liu JB, Liu JP, Liu RG, Liu Y, Liu ZA, Liu ZX, Lu GR, Lu F, Lu JG, Luo CL, Luo XL, Ma FC, Ma JM, Ma LL, Ma XY, Mao ZP, Meng XC, Mo XH, Nie J, Nie ZD, Olsen SL, Peng HP, Qi ND, Qian CD, Qin H, Qiu JF, Ren ZY, Rong G, Shan LY, Shang L, Shen DL, Shen XY, Sheng HY, Shi F, Shi X, Song LW, Sun HS, Sun SS, Sun YZ, Sun ZJ, Tang X, Tao N, Tian YR, Tong GL, Varner GS, Wang DY, Wang JZ, Wang L, Wang LS, Wang M, Wang M, Wang P, Wang PL, Wang SZ, Wang WF, Wang YF, Wang Z, Wang Z, Wang Z, Wang ZY, Wei CL, Wu N, Wu YM, Xia XM, Xie XX, Xin B, Xu GF, Xu H, Xu Y, Xue ST, Yan ML, Yan WB, Yang F, Yang HX, Yang J, Yang SD, Yang YX, Yi LH, Yi ZY, Ye M, Ye MH, Ye YX, Yu CS, Yu GW, Yuan CZ, Yuan JM, Yuan Y, Yue Q, Zang SL, Zeng Y, Zhang BX, Zhang BY, Zhang CC, Zhang DH, Zhang HY, Zhang J, Zhang JM, Zhang JY, Zhang JW, Zhang LS, Zhang QJ, Zhang SQ, Zhang XM, Zhang XY, Zhang Y, Zhang YJ, Zhang YY, Zhang ZP, Zhang ZQ, Zhao DX, Zhao JB, Zhao JW, Zhao PP, Zhao WR, Zhao XJ, Zhao YB, Zhao ZG, Zheng HQ, Zheng JP, Zheng LS, Zheng ZP, Zhong XC, Zhou BQ, Zhou GM, Zhou L, Zhou NF, Zhu KJ, Zhu QM, Zhu Y, Zhu YC, Zhu YS, Zhu ZA, Zhuang BA, Zou BS. Observation of the decay psi(2S)-->K0SK0L. Phys Rev Lett 2004; 92:052001. [PMID: 14995298 DOI: 10.1103/physrevlett.92.052001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2003] [Indexed: 05/24/2023]
Abstract
The decay psi(2S)-->K(0)(S)K(0)(L) is observed using psi(2S) data collected with the Beijing Spectrometer at the Beijing Electron-Positron Collider; the branching fraction is determined to be B(psi(2S)-->K(0)(S)K(0)(L))=(5.24+/-0.47+/-0.48)x10(-5). Compared with J/psi-->K(0)(S)K(0)(L), the psi(2S) branching fraction is enhanced relative to the prediction of the perturbative QCD "12%" rule. The result, together with the branching fractions of psi(2S) decays to other pseudoscalar meson pairs (pi(+)pi(-) and K+K-), is used to investigate the relative phase between the three-gluon and the one-photon annihilation amplitudes of psi(2S) decays.
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Affiliation(s)
- J Z Bai
- Institute of High Energy Physics, Beijing 100039, People's Republic of China
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Yu CX, Zhu YC, Yin XR, He W, Xu YL, Guan XH. [Screening the mimic antigen epitopes of triosephosphate isomerase of Schistosoma japonicum Chinese strain (Sjc-Tpi) with random phage peptide library]. Zhongguo Ji Sheng Chong Xue Yu Ji Sheng Chong Bing Za Zhi 2003; 19:11-4. [PMID: 12572015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/28/2023]
Abstract
OBJECTIVE To screen the mimic antigen epitopes of the triose phosphate isomerase of Schistosoma japonicum Chinese strain (SjC-TPI) and investigate their immunogenicity. METHODS The random phage peptide library (PH.D.-12) was screened with the purified antibody(IgG) against SjC-TPI to get the positive phage which contained the mimic antigen epitopes of SjC-TPI, and the immuno-characterization of the mimic antigen epitopes were investigated. RESULTS Two mimic antigen epitopes (M1, M2) of SjC-TPI were obtained. The immuno-sera of mice (Kunming strain) against the positive phages could recognize both the SjC-TPI and the protein of the positive phages. The DNA sequencing data showed no homology between the sequences of the deduced amino acid of the two mimic antigen peptides and the amino acid of SjC-TPI. CONCLUSION The two mimic antigen epitopes of SjC-TPI obtained are imitative epitopes of the configuration antigen of SjC-TPI.
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Affiliation(s)
- C X Yu
- Jiangsu Institute of Parasitic Diseases, Wuxi 214064
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135
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Ren JG, Zhu YC, Harn DA, Yu CX, Yin XR, Si J, He W, Xu M, Hua WQ, Xu YL. [Protective immunity induced by 23 kDa membrane protein DNA vaccine of Schistosoma japonicum Chinese strain in mice]. Zhongguo Ji Sheng Chong Xue Yu Ji Sheng Chong Bing Za Zhi 2003; 19:336-9. [PMID: 12572063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/28/2023]
Abstract
OBJECTIVE To develop 23 kDa membrane protein DNA vaccine of Schistosoma japonicum Chinese strain and test its protective efficacy in infected C57BL/6 mice. METHODS The full length cDNA encoding SjC23 amplified from pUC19-SjC23 subcloned into pcDNA3.1. 48 female mice were divided into three groups: A, B and C. Group A (control group) was each immunized i.m. with 100 micrograms of pcDNA3.1; group B (SjC23 group) was each immunized i.m. with 100 micrograms of pcDNA3.1-SjC23; group C (SjC23 + IL-12) was each immunized i.m. with a mixture of 100 micrograms of pcDNA3.1-SjC23, 100 micrograms of pcDNA3.1-p35 and 100 micrograms of pcDNA-p40, followed by two boosts of the same DNA once every two weeks. All the mice were challenged with 45 cercariae at week 8, killed and perfused for worms at week 14. The expression of SjC23 and p35, p40 in muscle tissue was determined by immuno-histochemical method. By the culture of spleen cells, the production of IL-2, IL-4, IL-10 and IFN-gamma after the stimulation of rSjC23-HD was determined two weeks before and after challenge. Anti-SjC23 antibodies were tested by Western blotting. RESULTS SjC23 and p35, p40 were all expressed on the membrane and in the plasma of muscle cells of the infected mice. Significant increase of IL-2 and IFN-gamma in SjC23 and SjC23 + IL-12 groups was observed before and after challenge. Western blotting showed that after the third immunization (before challenge) 8 out of 10 sera from SjC23 group and 9 out of 10 sera from SjC23 + IL-12 group were positive. The worm reduction rate in SjC23 group and SjC23 + IL-12 group was 26.9% and 35.4%, respectively; the number of eggs in liver tissue was reduced by 22.2% and 28.4%, respectively. CONCLUSION pcDNA3.1-SjC23 DNA vaccine could induce partial protection against Schistosoma japonicum in C57BL/6 mice.
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Affiliation(s)
- J G Ren
- Jiangsu Institute of Parasitic Diseases, Wuxi 214064
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Bai JZ, Ban Y, Bian JG, Cai X, Chang JF, Chen HF, Chen HS, Chen J, Chen J, Chen JC, Chen YB, Chi SP, Chu YP, Cui XZ, Dai YM, Dai YS, Dong LY, Du SX, Du ZZ, Dunwoodie W, Fang J, Fang SS, Fu CD, Fu HY, Fu LP, Gao CS, Gao ML, Gao YN, Gong MY, Gong WX, Gu SD, Guo YN, Guo YQ, Guo ZJ, Han SW, Harris FA, He J, He KL, He M, He X, Heng YK, Hong T, Hu HM, Hu T, Huang GS, Huang L, Huang XP, Izen JM, Ji XB, Jiang CH, Jiang XS, Jin DP, Jin S, Jin Y, Jones BD, Ke ZJ, Kong D, Lai YF, Li F, Li G, Li HH, Li J, Li JC, Li K, Li QJ, Li RB, Li RY, Li W, Li WG, Li XQ, Li XS, Liu CF, Liu CX, Liu F, Liu F, Liu HM, Liu JB, Liu JP, Liu RG, Liu Y, Liu ZA, Liu ZX, Lou XC, Lu GR, Lu F, Lu HJ, Lu JG, Lu ZJ, Luo XL, Ma EC, Ma FC, Ma JM, Malchow R, Mao ZP, Meng XC, Mo XH, Nie J, Nie ZD, Olsen SL, Paluselli D, Peng HP, Qi ND, Qian CD, Qiu JF, Rong G, Shen DL, Shen H, Shen XY, Sheng HY, Shi F, Song LW, Sun HS, Sun SS, Sun YZ, Sun ZJ, Tang SQ, Tang X, Tian D, Tian YR, Toki W, Tong GL, Varner GS, Wang J, Wang JZ, Wang L, Wang LS, Wang M, Wang M, Wang P, Wang PL, Wang WF, Wang YF, Wang Z, Wang Z, Wang Z, Wang ZY, Wei CL, Wu N, Xia XM, Xie XX, Xu GF, Xu Y, Xue ST, Yan ML, Yan WB, Yang GA, Yang HX, Yang J, Yang SD, Ye MH, Ye YX, Ying J, Yu CS, Yu GW, Yuan CZ, Yuan JM, Yuan Y, Yue Q, Zang SL, Zeng Y, Zhang BX, Zhang BY, Zhang CC, Zhang DH, Zhang HY, Zhang J, Zhang JM, Zhang JW, Zhang LS, Zhang QJ, Zhang SQ, Zhang XY, Zhang YJ, Zhang Y, Zhang YY, Zhang ZP, Zhao DX, Zhao J, Zhao JW, Zhao PP, Zhao WR, Zhao YB, Zhao ZG, Zheng JP, Zheng LS, Zheng ZP, Zhong XC, Zhou BQ, Zhou GM, Zhou L, Zhou NF, Zhu KJ, Zhu QM, Zhu Y, Zhu YC, Zhu YS, Zhu ZA, Zhuang BA, Zou BS. Observation of a near-threshold enhancement in the pp mass spectrum from radiative J/psi-->gammapp decays. Phys Rev Lett 2003; 91:022001. [PMID: 12906471 DOI: 10.1103/physrevlett.91.022001] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2003] [Indexed: 05/24/2023]
Abstract
We observe a narrow enhancement near 2m(p) in the invariant mass spectrum of pp pairs from radiative J/psi-->gammapp decays. No similar structure is seen in J/psi-->pi(0)pp decays. The results are based on an analysis of a 58 x 10(6) event sample of J/psi decays accumulated with the BESII detector at the Beijing electron-positron collider. The enhancement can be fit with either an S- or P-wave Breit-Wigner resonance function. In the case of the S-wave fit, the peak mass is below 2m(p) at M=1859(+3)(-10) (stat)+5-25(syst) MeV/c(2) and the total width is Gamma<30 MeV/c(2) at the 90% confidence level. These mass and width values are not consistent with the properties of any known particle.
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Affiliation(s)
- J Z Bai
- Institute of High Energy Physics, Beijing 100039, People's Republic of China
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Zhu YC, Snodgrass GL. Cytochrome P450 CYP6X1 cDNAs and mRNA expression levels in three strains of the tarnished plant bug Lygus lineolaris (Heteroptera: Miridae) having different susceptibilities to pyrethroid insecticide. Insect Mol Biol 2003; 12:39-49. [PMID: 12542634 DOI: 10.1046/j.1365-2583.2003.00385.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Three cDNAs, cloned from both pyrethroid-susceptible and -resistant strains of Lygus lineolaris, contained a 1548 nucleotide open reading frame encoding a 516 amino acid residue protein. Predicted cytochrome P450s from cDNAs were classified as the first three new members of subfamily CYP6X, CYP6X1v1 for a susceptible strain and CYP6X1v2 and CYP6X1v3 for two resistant strains. Putative cytochrome P450 CYP6X1s from L. lineolaris were highly similar (up to 42% amino acid sequence identity) to several insect CYP6s that are responsible for reduced sensitivity to pyrethroid insecticides. A total of twenty-six nucleotide substitutions were revealed between cDNAs of susceptible and resistant strains. Two nucleotide substitutions resulted in amino acid changes, Asp373 to Ala373 and Ser487 to Ala487, between susceptible and resistant strains. The resistant laboratory strain contained 2.1-fold higher cytochrome P450 mRNA per microgram total RNA than the susceptible laboratory strain. Topical treatment with 10 ng permethrin elevated cytochrome P450 mRNA levels by approximately 2-fold. The results of this study indicated that cytochrome P450 gene mutation, coupled with up-regulation, was present only in the pyrethroid resistant strains, and was possibly related to resistance development in the tarnished plant bug.
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Affiliation(s)
- Y C Zhu
- Jamie Whitten Delta States Research Center, ARS-USDA, Stoneville, Mississippi 38776, USA.
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138
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Bai JZ, Ban Y, Bian JG, Chen AD, Chen HF, Chen HS, Chen JC, Chen XD, Chen YB, Cheng BS, Chi SP, Chu YP, Choi JB, Cui XZ, Dai YS, Dong LY, Du ZZ, Dunwoodie W, Fu HY, Fu LP, Gao CS, Gu SD, Guo YN, Guo ZJ, Han SW, Han Y, Harris FA, He J, He JT, He KL, He M, He X, Hong T, Heng YK, Hu GY, Hu HM, Hu QH, Hu T, Huang GS, Huang XP, Huang YZ, Izen JM, Ji XB, Jiang CH, Jin Y, Jones BD, Kang JS, Ke ZJ, Kim HJ, Kim SK, Kim TY, Kong D, Lai YF, Li D, Li HB, Li HH, Li J, Li JC, Li PQ, Li QJ, Li RY, Li W, Li WG, Li XN, Li XQ, Liu B, Liu F, Liu F, Liu HM, Liu J, Liu JP, Liu TR, Liu RG, Liu Y, Liu ZX, Lou XC, Lu GR, Lu F, Lu JG, Lu ZJ, Luo XL, Ma EC, Ma JM, Malchow R, Mao HS, Mao ZP, Meng XC, Mo XH, Nie J, Nie ZD, Olsen SL, Paluselli D, Park H, Qi ND, Qi XR, Qian CD, Qiu JF, Que YK, Rong G, Shao YY, Shen BW, Shen DL, Shen H, Shen XY, Sheng HY, Shi F, Shi HZ, Song XF, Suh JY, Sun HS, Sun LF, Sun YZ, Tang SQ, Toki W, Tong GL, Varner GS, Wang J, Wang JZ, Wang L, Wang LS, Wang P, Wang PL, Wang SM, Wang YY, Wang ZY, Wei CL, Wu N, Xi DM, Xia XM, Xie XX, Xu GF, Xu Y, Xue ST, Yan WB, Yan WG, Yang CM, Yang CY, Yang GA, Yang HX, Yang W, Yang XF, Ye MH, Ye SW, Ye YX, Yu CS, Yu CX, Yu GW, Yuan Y, Zhang BY, Zhang C, Zhang CC, Zhang DH, Zhang HL, Zhang HY, Zhang J, Zhang JW, Zhang L, Zhang LS, Zhang P, Zhang QJ, Zhang SQ, Zhang XY, Zhang YY, Zhang ZP, Zhao DX, Zhao HW, Zhao J, Zhao JW, Zhao M, Zhao PP, Zhao WR, Zhao YB, Zhao ZG, Zheng JP, Zheng LS, Zheng ZP, Zhou BQ, Zhou GM, Zhou L, Zhu KJ, Zhu QM, Zhu YC, Zhu YS, Zhu ZA, Zhuang BA, Zou BS. Measurements of the cross section for e(+)e(-) --> hadrons at center-of-mass energies from 2 to 5 GeV. Phys Rev Lett 2002; 88:101802. [PMID: 11909342 DOI: 10.1103/physrevlett.88.101802] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2001] [Indexed: 05/23/2023]
Abstract
We report values of R = sigma(e(+)e(-)-->hadrons)/sigma(e(+)e(-)-->mu(+)mu(-)) for 85 center-of-mass energies between 2 and 5 GeV measured with the upgraded Beijing Spectrometer at the Beijing Electron-Positron Collider.
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Affiliation(s)
- J Z Bai
- Institute of High Energy Physics, Beijing 100039, People's Republic of China
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Liang YS, Coles GC, Dai JR, Zhu YC, Doenhoff MJ. Biological characteristics of praziquantel-resistant and -susceptible isolates of Schistosoma mansoni. Ann Trop Med Parasitol 2001; 95:715-23. [PMID: 11784425 DOI: 10.1080/00034980120103270] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
If there is a change in the biological characteristics of schistosomes associated with the development of resistance to praziquantel, this could affect the transmission and pathology of the diseases they cause. To investigate this possibility, the host-parasite relationships of five praziquantel-resistant and five praziquantel-susceptible isolates of Schistosoma mansoni were compared in Biomphalaria glabrata snails and outbred CD(1) albino mice. Whether praziquantel-resistant or -susceptible, all the laboratory-selected isolates gave similar results in B. glabrata. However, the snails infected with any of three field-collected isolates from Senegal, each of which has been shown to be praziquantel-resistant, shed fewer cercariae and survived longer than the snails infected with the drug-susceptible or laboratory-selected, drug-resistant isolates. There were no differences between isolates in terms of their infectivity to mice. However, mice infected with any of four of the five drug-resistant isolates shed more eggs in their faeces than mice carrying the drug-susceptible parasites, and mice infected with any of the resistant isolates also had larger numbers of eggs in their tissues. Although granuloma sizes were generally similar for all isolates, the praziquantel-resistant isolates may be more pathogenic in mice than the susceptible ones because of their relatively high egg productions.
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Affiliation(s)
- Y S Liang
- Department of Clinical Veterinary Science, University of Bristol, Langford House, Langford, Bristol BS40 5DU, UK
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140
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Abstract
To look for possible evidence of the development of resistance in Schistosoma japonicum to praziquantel, we conducted a field study in China. During the non-transmission period of schistosomiasis a random sample of 2860 individuals from six villages in three provinces of China were examined using a parasitological stool examination. Of the 372 stool-positive subjects, 363 subjects were treated with a single oral dose of 40 mg/kg of praziquantel. Six to Seven weeks after treatment, of 334 subjects examined using the same stool examination, stool-negative results were found in 319 patients which represents a 95.5% parasitologic cure rate. Fifteen subjects still excreting eggs were treated a second time with the same dose of praziquantel. All stool samples, including those from participants re-treated with praziquantel, were re-examined 12 weeks after the first treatment and no stool-positive subjects were found. The results indicate that there was no evidence for reduced susceptibility of S. japonicum to praziquantel despite its extensive use in the main endemic areas of China for more than 10 years. The in vitro responses to praziquantel of cercariae, miracidia and eggs of S. japonicum compared with S. mansoni demonstrate that the cercariae, miracidia and eggs of S. japonicum are more sensitive to praziquantel than those of S. mansoni. More sensitive worms would be less likely to develop resistance and this could explain why no evidence for resistance was found in S. japonicum in China.
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Affiliation(s)
- Y S Liang
- Jiangsu Institute of Parasitic Diseases, Wuxi, Jiangsu, PR China
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Abstract
Ohmefentanyl is a very potent and highly selective agonist for mu-opioid receptors. We now study analgesia, in vitro activity and opioid receptor affinity of the stereoisomers of ohmefentanyl isothiocyanate. We found that some isomers of ohmefentanyl isothiocyanate had a potent analgesic effect and that all isomers except (3R,4S,2'S)-ohmefentanyl isothiocyanate had a more potent inhibitory action on the electrically evoked contractions of mouse vas deferens than of guinea pig ileum. The inhibitory actions could be antagonized by naloxone. However, compared with the activity of the corresponding stereoisomers of ohmefentanyl, these ohmefentanyl isothiocyanates had significantly reduced analgesia and in vitro activity. They also inhibited the binding of [3H]DPDPE ([D-Pen(2),D-Pen(5)]enkephalin) and [3H]DAGO ([D-Ala(2),Mephe(4),Gly-ol(5)]enkephalin) to opioid receptors in mouse brain membranes. The inhibitory effect of stereoisomers of ohmefentanyl isothiocyanate at mu-opioid receptors was markedly lower than that of their parent compounds. The affinity of stereoisomers of ohmefentanyl isothiocyanate for delta-opioid receptors was, however, greater than or equal to that of their corresponding stereoisomers of ohmefentanyl. The results showed that the introduction of an isothiocyanato group into the phenyl ring in position-1 of ohmefentanyl reduced bioactivity and affinity to mu-opioid receptors but that the selectivity of these compounds for delta-opioid receptors was enhanced. Isomer (3R,4S,2'R)-ohmefentanyl isothiocyanate showed highest selectivity for delta-opioid receptors (K(i)(mu)/K(i)(delta)=13.6) and potent analgesic activity (ED(50)=0.25 mg/kg).
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Affiliation(s)
- B Y Chen
- 2nd Department of Pharmacology, Shanghai Institute of Materia Medica, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China
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Zhu YZ, Zhu YC, Wang ZJ, Lu Q, Lee HS, Unger T. Time-dependent apoptotic development and pro-apoptotic genes expression in rat heart after myocardial infarction. Jpn J Pharmacol 2001; 86:355-8. [PMID: 11488438 DOI: 10.1254/jjp.86.355] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
We investigated the apoptotic development and apoptotic-related gene expression after myocardial infarction (MI) at different time points in the current study. Bax gene expression was increased at 12 h after MI and peaked at 24 h. Fas gene started to over-express at 12 h after MI as well but it reached maximum at 72 h. In the MI groups, strongest staining of apoptosis was detected in rats 3 days post operation. Our results demonstrate that apoptotic development after MI is time dependent in the ischemic area and there could be some linkage with the over expression of angiotensin II receptors post MI.
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Affiliation(s)
- Y Z Zhu
- Department of Pharmacology, National University of Singapore, Singapore.
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143
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Lu N, Tian DZ, Zhou L, Yao T, Zhu YC. [Changes in expression of angiotensin subtype AT1A and AT2 receptors in rats during cardiac remodeling following myocardial infarction]. Sheng Li Xue Bao 2001; 53:128-32. [PMID: 11471212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/20/2023]
Abstract
Immunohistochemical and electron microscopic techniques and image analysis were employed to investigate the regulation of cardiac AT1A and AT2 subtype receptors in rats during cardiac remodeling following myocardial infarction (MI). Positive immunostaining for AT1A and AT2 receptors was observed in myocytes and vessels with AT1A being more than AT2. Three days after MI, disappearance of myocardial cross striation and fibroblast hyperplasia were found with electron microscopy. AT1A receptor protein expression in myocardial noninfarcted portion notably increased compared with that in sham-operated control rats (P < 0.001). No apparent changes were observed in AT2 receptor (P > 0.05). Two weeks after MI, myocyte cross striation and collagen deposition were found. Meanwhile, AT1A receptor staining decreased compared with that of three days after MI (P < 0.01), but there was still more than that of the control (P < 0.05). AT2 receptor was significantly increased compared with that of the sham-operated control rats (P < 0.001). These results suggest that both AT1A and AT2 receptor protein expression was upregulated in noninfarcted myocardium after MI, and the regulation of AT1A and AT2 receptors after MI may be involved in post-infarction cardiac remodeling.
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Affiliation(s)
- N Lu
- Department of Physiology, Medical Center of Fudan University, Shanghai 200032
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144
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Abstract
Differences of analgesia and withdrawal response among ohmefentanyl stereoisomers have been studied. In the present study, Quantitative comparison of reinforcing effects of ohmefentanyl stereoisomers and morphine was performed by using a conditioned place preference design in mice. Results showed that morphine and ohmefentanyl stereoisomers were able to increase significantly the time spent in the drug-paired side with respect to vehicle treated animals. A good linear correlation between doses of drugs and number of mice with place preference was found within a given dose range. On the basis of the dose-response curve analysis, ohmefentanyl stereoisomers displayed a significant difference in place preference ED50. The addictive index (analgesic ED50/place preference ED50) was used to assess the addictive potential of drugs. It was demonstrated that the addictive potential of ohmefentanyl stereoisomers did not exhibit a large difference as addictive index. Among these stereoisomers, the addictive potential of compound F9208 was markedly lower than that of morphine.
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Affiliation(s)
- G W Guo
- Shanghai Institute of Meteria Medica, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences
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145
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Zhao XS, Tian DZ, Ding YJ, Zhu YC, Yao T. Effect of cathepsin B on thymocyte apoptosis in spontaneously hypertensive rats. Acta Pharmacol Sin 2001; 22:26-31. [PMID: 11730557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023] Open
Abstract
AIM To further investigate the mechanism of the thymus dysfunction in spontaneously hypertensive rats. METHODS The location of cathepsin B expression was determined by in situ hybridization. The expression of cathepsin B was analyzed by Northern blot, and thymocyte apoptosis was detected by TUNEL and flow cytometer, respectively. RESULTS The expression of cathepsin B in thymus paralleled with thymocyte apoptosis both in vitro and in vivo. Cathepsin B transcripts were located in the plasma of thymocytes and were more over-expressed of 6- and 8-week-old SHR than those in the thymus of WKY. CONCLUSION Thymocyte apoptosis in SHR is increased and this phenomenon is associated with the expression of cathepsin B.
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Affiliation(s)
- X S Zhao
- Department of Physiology, Medical Center of Fudan University, Shanghai 200032, China
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146
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Zhu YC, Kramer KJ, Dowdy AK, Baker JE. Trypsinogen-like cDNAs and quantitative analysis of mRNA levels from the Indianmeal moth, Plodia interpunctella. Insect Biochem Mol Biol 2000; 30:1027-1035. [PMID: 10989289 DOI: 10.1016/s0965-1748(00)00073-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Two cDNA fragments encoding full-length trypsinogen-like proteins were cloned from larvae of two strains (RC688s and HD198r) of the Indianmeal moth, Plodia interpunctella (Hübner), which differed in their sensitivity to Bacillus thuringiensis protoxins. One cDNA fragment contained 874 nucleotides, including a 780-nucleotide open reading frame that encoded a trypsinogen-like protein (PiT2b). Another cDNA fragment amplified from both P. interpunctella strains contained 864 nucleotides including a 780 bp open reading frame encoding a second trypsinogen-like protein (PiT2c). The cDNA sequence of PiT2b shared 89% sequence identity with PiT2a, a trypsinogen-like protein cloned previously from this species. The cDNA sequences of PiT2a and PiT2c shared 83% identity. The cDNA sequence identity between PiT2b and PiT2c was 80%. The cDNA for PiT2b from strain RC688s was different at six nucleotide positions from that of PiT2b from strain HD198r. Five nucleotide replacements occurred in the open reading frame leading to amino acid changes at all five positions. There were five nucleotide differences in the cDNAs for PiT2c trypsinogen-like proteins from the two strains. Two nucleotide substitutions in the open reading frame resulted in replacements of two amino acid residues in the deduced protein sequences. Amino acid sequences for PiT2a and PiT2b shared 84% identity, but only 50% identity was observed between PiT2c and the other two trypsinogen-like proteins. The deduced amino acid sequences for PiT2b and PiT2c included both signal and zymogen activation peptides and amino acid sequence motifs which are conserved in seven homologous trypsinogen-like proteins from other insects. Typical features of the putative trypsinogen-like proteins from P. interpunctella included the serine proteinase active site triad (His(81), Asp(133), and Ser(233)), three pairs of cysteine residues for disulfide bridges, and three residues, Asp(227), Gly(250), and Gly(260), that help to confer trypsin-like specificity to the enzymes. Quantitative RT-PCR analyses showed that, in fourth instar larvae, RC688s had 1.6-fold higher PiT2a trypsinogen-like mRNA than did HD198r. Expression of PiT2b mRNA was 3.4-fold higher in HD198r than in RC688s. Expression of PiT2c mRNA was 2.8-fold higher in RC688s than in HD198r. Mean accumulation levels of mRNAs for all three trypsinogen-like proteins were slightly higher in RC688s than in HD198r based on total RNA, and 1.3-fold higher in RC688s than in HD198r based on wet weight of larval body tissues.
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Affiliation(s)
- Y C Zhu
- Grain Marketing and Production Research Center, ARS-USDA, 1515 College Avenue, Kansas 66502, Manhattan, USA
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147
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Zhu YZ, Zhu YC, Li J, Schäfer H, Schmidt W, Yao T, Unger T. Effects of losartan on haemodynamic parameters and angiotensin receptor mRNA levels in rat heart after myocardial infarction. J Renin Angiotensin Aldosterone Syst 2000; 1:257-62. [PMID: 11881034 DOI: 10.3317/jraas.2000.039] [Citation(s) in RCA: 45] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
We investigated the haemodynamic parameters and the regulation of cardiac mRNA levels of the angiotensin receptor subtypes, AT1 and AT2, by the AT,-receptor antagonist losartan in rat heart during the acute phase of myocardial infarction. AT1- andAT2-receptor mRNA levels markedly increased at 30 minutes and peaked at 24 hours post myocardial infarction (12.6-fold increase for AT1- and 17.2-fold increase for AT2 compared with controls). Losartan significantly reduced mean blood pressure in sham-operated rats and decreased mean blood pressure and left ventricular end-diastolic pressure in myocardial infarction rats. However, the AT,- andAT2-receptor mRNA levels of losartan-treated rats showed a pattern similar to that of water-treated rats. The time-dependent increase of AT1- and AT2-receptor mRNA levels is associated with the early remodelling process of non-infarcted myocardium post MI and is independent of AT1-receptor blockade.
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Affiliation(s)
- Y Z Zhu
- Department of Pharmacology, University of Kiel, Kiel, 24105, Germany
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148
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Abstract
Stereo-structural difference of ohmefentanyl stereoisomers on analgesic action and receptor affinity has been studied. To assess the difference of ohmefentanyl stereoisomers in physical dependence, the potency of physical dependence was quantified by estimating the ED50 value of ohmefentanyl stereoisomers in the naloxone-precipitated jumping test in mice. Morphine was used to assess the method and as a drug of comparison. The results indicate that the degree of physical dependence of morphine can been quantified by estimating the ED50 value of morphine withdrawal jumping induced by naloxone. A significant difference was observed in withdrawal jumping ED50 values among ohmefentanyl stereoisomers. Of these isomers, F9202 and F9204 had similarly potent analgesic action, but very significant difference in naloxone precipitated withdrawal response. Dependent potency index of F9204 was 618-fold weaker than that of F9202. It is concluded that a stereo-structural difference in physical dependence is found to exist among ohmefentanyl stereoisomers. Compound F9204 displayed a strong analgesic action and weak physical dependent potency.
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Affiliation(s)
- G W Guo
- 2nd Department of Pharmacology, Shanghai Institute of Meteria Medica, Chinese Academy of Sciences
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149
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Huang XQ, Jiang HL, Luo XM, Chen KX, Zhu YC, Ji RY, Cao Y. Comparative molecular modeling on 3D-structure of opioid receptor-like 1 receptor. Acta Pharmacol Sin 2000; 21:529-35. [PMID: 11360687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/16/2023] Open
Abstract
AIM To build the three-dimensional structure of opioid receptor-like 1 (ORL1) receptor. METHODS Structural elements of ORL1 receptor were predicted from sequence alignments of opioid and related receptors of G protein-coupled receptor (GPCR) based on (i) the consensus, biophysical interpretations of alignment-derived properties, and (ii) tertiary structural homology to frog rhodopsin; The extracellular loops of ORL1 were built by self-constructed database searching based on geometrical constraints; initial model was refined computationally with energy minimization by molecular mechanics method. RESULTS The calculated structure of ORL1 receptor has clusters of hydrogen bonds existing in interhelices and extracellular loops; the ORL1 receptor has a possible ligand-binding "crevice" situated on the extraside of the transmembrane domains between helices 3, 5, 6, and 7, which is partially covered by the extracellular loop 2 (EL-2); The binding cavity may consist of a "highly conserved region" involving the residues of Asp130, Tyr131, and an outer "conservatively variable region" containing the residues near the interface of transmembrane (TM) helices-EL loops; The molecular model obtained is qualitatively consistent with ligand affinities, hybrid peptide studies, and other experimental data. CONCLUSION The structural model of ORL1 receptor from this study is helpful for clarifying experimental observations of ligands interacting with opioid receptors, and for designing new biological investigations.
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Affiliation(s)
- X Q Huang
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 200031, China
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150
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Huang XQ, Jiang HL, Luo XM, Chen KX, Zhu YC, Ji RY, Cao Y. Study on mechanism of interaction of nociceptin and opioids binding with opioid receptor-like 1 receptor. Acta Pharmacol Sin 2000; 21:536-46. [PMID: 11360688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/16/2023] Open
Abstract
AIM To study the mechanism of interaction of nociceptin and opioids with ORL1 receptor. METHODS Molecular dynamics study was carried out before nociceptin was manually docked into the binding site of ORL1 receptor; DOCK4.0 program was applied to dock four stereoisomers of lofentanyl and etorphine into the binding pocket of ORL1 receptor; Binding energies were calculated, the relationship between binding energy and binding affinity was studied. RESULTS Nociceptin fits well into the binding pocket, the N-terminal FGGF tetrapeptide is located in the inner region of the binding cavity, the nociceptin (5-7) interacts with the conservatively variable residues near the other end of binding pocket, and maybe determines selectivity of ORL1 receptor over dynorphin A, the positively charged core of nociceptin (8-13) binds predominantly with negatively charged EL-2 loop, which is thought to be able to mediate receptor activation. The shortest fully active analogue of nociceptin (1-13) is also discussed. The main difference between these two opioids and nociceptin exists in the kinds and the number of conserved and variable residues in the binding pocket and thereafter in the strength of their interaction. Prediction for binding affinities of four stereoisomers of lofentanyl has been performed based on their binding energies, the similar pharmacophore of lofentanyl and other fentanyl analogs, and the good correlation between binding energies and their experimental binding affinities (-log Ki values). CONCLUSION Ligand docking results from this study are helpful in clarifying experimental observations of ligands interaction with opioid receptors, thus furthering biological investigations.
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Affiliation(s)
- X Q Huang
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 200031, China
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