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Abudinén F, Bertemes M, Bilokin S, Campajola M, Casarosa G, Cunliffe S, Corona L, De Nuccio M, De Pietro G, Dey S, Eliachevitch M, Feichtinger P, Ferber T, Gemmler J, Goldenzweig P, Gottmann A, Graziani E, Haigh H, Hohmann M, Humair T, Inguglia G, Kahn J, Keck T, Komarov I, Krohn JF, Kuhr T, Lacaprara S, Lieret K, Maiti R, Martini A, Meier F, Metzner F, Milesi M, Park SH, Prim M, Pulvermacher C, Ritter M, Sato Y, Schwanda C, Sutcliffe W, Tamponi U, Tenchini F, Urquijo P, Zani L, Žlebčík R, Zupanc A. Punzi-loss:: a non-differentiable metric approximation for sensitivity optimisation in the search for new particles. Eur Phys J C Part Fields 2022; 82:121. [PMID: 35210938 PMCID: PMC8827400 DOI: 10.1140/epjc/s10052-022-10070-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Accepted: 01/27/2022] [Indexed: 06/14/2023]
Abstract
We present the novel implementation of a non-differentiable metric approximation and a corresponding loss-scheduling aimed at the search for new particles of unknown mass in high energy physics experiments. We call the loss-scheduling, based on the minimisation of a figure-of-merit related function typical of particle physics, a Punzi-loss function, and the neural network that utilises this loss function a Punzi-net. We show that the Punzi-net outperforms standard multivariate analysis techniques and generalises well to mass hypotheses for which it was not trained. This is achieved by training a single classifier that provides a coherent and optimal classification of all signal hypotheses over the whole search space. Our result constitutes a complementary approach to fully differentiable analyses in particle physics. We implemented this work using PyTorch and provide users full access to a public repository containing all the codes and a training example.
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Affiliation(s)
| | - M. Bertemes
- Institute of High Energy Physics, 1050 Vienna, Austria
| | - S. Bilokin
- Ludwig Maximilians University, Munich, Germany
| | - M. Campajola
- Dipartimento di Scienze Fisiche, Università di Napoli Federico II, 80126 Naples, Italy
- INFN-Sezione di Napoli, 80126 Naples, Italy
| | - G. Casarosa
- Dipartimento di Fisica, Università di Pisa, 56127 Pisa, Italy
- INFN-Sezione di Pisa, 56127 Pisa, Italy
| | - S. Cunliffe
- Deutsches Elektronen-Synchrotron, Hamburg, Germany
| | - L. Corona
- Dipartimento di Fisica, Università di Pisa, 56127 Pisa, Italy
- INFN-Sezione di Pisa, 56127 Pisa, Italy
| | - M. De Nuccio
- Deutsches Elektronen-Synchrotron, Hamburg, Germany
| | | | - S. Dey
- Tel Aviv University, Tel Aviv, Israel
| | | | | | - T. Ferber
- Institut für Experimentelle Teilchenphysik, Karlsruher Institut für Technologie, Karlsruhe, Germany
| | - J. Gemmler
- Institut für Experimentelle Teilchenphysik, Karlsruher Institut für Technologie, Karlsruhe, Germany
| | - P. Goldenzweig
- Institut für Experimentelle Teilchenphysik, Karlsruher Institut für Technologie, Karlsruhe, Germany
| | - A. Gottmann
- Institut für Experimentelle Teilchenphysik, Karlsruher Institut für Technologie, Karlsruhe, Germany
| | | | - H. Haigh
- Institute of High Energy Physics, 1050 Vienna, Austria
| | - M. Hohmann
- University of Melbourne, Melbourne, Australia
| | - T. Humair
- Max-Planck-Institut für Physik, Munich, Germany
| | - G. Inguglia
- Institute of High Energy Physics, 1050 Vienna, Austria
| | - J. Kahn
- Helmholtz AI, Karlsruhe Institute of Technology, 76131 Karlsruhe, Germany
| | - T. Keck
- Institut für Experimentelle Teilchenphysik, Karlsruher Institut für Technologie, Karlsruhe, Germany
| | - I. Komarov
- Deutsches Elektronen-Synchrotron, Hamburg, Germany
| | - J.-F. Krohn
- University of Melbourne, Melbourne, Australia
| | - T. Kuhr
- Ludwig Maximilians University, Munich, Germany
| | | | - K. Lieret
- Ludwig Maximilians University, Munich, Germany
| | - R. Maiti
- Institute of High Energy Physics, 1050 Vienna, Austria
| | - A. Martini
- Deutsches Elektronen-Synchrotron, Hamburg, Germany
| | | | - F. Metzner
- Institut für Experimentelle Teilchenphysik, Karlsruher Institut für Technologie, Karlsruhe, Germany
| | - M. Milesi
- University of Melbourne, Melbourne, Australia
| | - S.-H. Park
- High Energy Accelerator Research Organization (KEK), Tsukuba, Japan
| | - M. Prim
- University of Bonn, Bonn, Germany
| | - C. Pulvermacher
- Institut für Experimentelle Teilchenphysik, Karlsruher Institut für Technologie, Karlsruhe, Germany
| | - M. Ritter
- Ludwig Maximilians University, Munich, Germany
| | - Y. Sato
- High Energy Accelerator Research Organization (KEK), Tsukuba, Japan
| | - C. Schwanda
- Institute of High Energy Physics, 1050 Vienna, Austria
| | | | | | | | - P. Urquijo
- University of Melbourne, Melbourne, Australia
| | - L. Zani
- Aix Marseille Université, CNRS/IN2P3, CPPM, 13288 Marseille, France
| | - R. Žlebčík
- Faculty of Mathematics and Physics, Charles University, Prague, Czech Republic
| | - A. Zupanc
- Jožef Stefan Institute, Ljubljana, Slovenia
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Rodríguez-Blanco M, Ramos AJ, Prim M, Sanchis V, Marín S. Usefulness of the analytical control of aflatoxins in feedstuffs for dairy cows for the prevention of aflatoxin M 1 in milk. Mycotoxin Res 2019; 36:11-22. [PMID: 31111427 DOI: 10.1007/s12550-019-00362-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Revised: 04/02/2019] [Accepted: 05/02/2019] [Indexed: 11/25/2022]
Abstract
Aflatoxin M1 (AFM1) is a hydroxylated metabolite of aflatoxin B1 (AFB1) and can be excreted in milk of cows after consuming aflatoxin (AF)-contaminated feed. The aim of this research was to assess the levels of total AFs in samples of feedingstuff for dairy cows (n = 193) and the levels of AFM1 in raw bulk tank milk samples (n = 375), in order to estimate the ratio of "AFB1 feed input" versus "AFM1 milk output" in four specific regions of Spain. Moreover, the correlation between the raw materials used as ingredients of the total mixed ration (TMR) and the presence of AFs was studied. About one-third (34.7%) of the feed samples were positive for total AFs in a range of 0.05-6.45 μg/kg, and 12.4% were positive for AFB1. AFM1 was detected in 18.9% of bulk milk samples, with concentrations ranging from 0.009 to 1.36 μg/kg. While none of the feed samples exceeded the European Union (EU) maximum content for AFB1 in feedingstuff for dairy animals of 5 μg/kg, three bulk milk samples exceeded the EU maximum level for AFM1 in milk of 50 ng/kg. The transfer ratio AFB1/AFM1, which was derived from AFB1 levels in feed, AFM1 levels in bulk tank milk, feed intake, and milk yield data, was 0.6-6%, which corresponded well with the range of published carry-over data for aflatoxins. Statistical analyses showed that the main sources of AFB1 in TMR were maize silage, bagasse, soya bean husk, maize, alfalfa hay, cotton seed and compound feed, thus special attention should be paid in controlling these raw materials when used in TMR preparation. Although the analysis of AFs in feed did not correlate with the presence of AFM1 in milk, monitoring feedstuffs is a useful tool in order to try and minimise AF-contamination of milk.
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Affiliation(s)
- M Rodríguez-Blanco
- Applied Mycology Unit, Food Technology Department, University of Lleida, UTPV-XaRTA, Agrotecnio Centre, Av. Rovira Roure 191, 25198, Lleida, Spain
| | - A J Ramos
- Applied Mycology Unit, Food Technology Department, University of Lleida, UTPV-XaRTA, Agrotecnio Centre, Av. Rovira Roure 191, 25198, Lleida, Spain
| | - M Prim
- Applied Mycology Unit, Food Technology Department, University of Lleida, UTPV-XaRTA, Agrotecnio Centre, Av. Rovira Roure 191, 25198, Lleida, Spain
| | - V Sanchis
- Applied Mycology Unit, Food Technology Department, University of Lleida, UTPV-XaRTA, Agrotecnio Centre, Av. Rovira Roure 191, 25198, Lleida, Spain
| | - S Marín
- Applied Mycology Unit, Food Technology Department, University of Lleida, UTPV-XaRTA, Agrotecnio Centre, Av. Rovira Roure 191, 25198, Lleida, Spain.
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Gelb M, Bernlochner F, Goldenzweig P, Metzner F, Adachi I, Aihara H, Al Said S, Asner D, Atmacan H, Aushev T, Ayad R, Babu V, Badhrees I, Bansal V, Behera P, Beleño C, Bhuyan B, Biswal J, Bobrov A, Bračko M, Braun N, Cao L, Červenkov D, Chekelian V, Chen A, Cheon B, Chilikin K, Cho K, Choi SK, Choi Y, Choudhury S, Cinabro D, Cunliffe S, Dash N, Di Carlo S, Doležal Z, Dong T, Eidelman S, Epifanov D, Fast J, Ferber T, Frey A, Fulsom B, Garg R, Gaur V, Gabyshev N, Garmash A, Gemmler J, Giri A, Greenwald D, Haba J, Hara T, Hayasaka K, Hayashii H, Hou WS, Inami K, Inguglia G, Ishikawa A, Itoh R, Iwasaki M, Iwasaki Y, Jacobs W, Jia S, Jin Y, Joffe D, Joo K, Kahn J, Kaliyar A, Kawasaki T, Kichimi H, Kiesling C, Kim D, Kim H, Kim S, Kodyš P, Korpar S, Kotchetkov D, Križan P, Kroeger R, Krokovny P, Kuhr T, Kulasiri R, Kuzmin A, Kwon YJ, Lange J, Lee I, Lee J, Lee J, Lee S, Li Y, Li Gioi L, Libby J, Liventsev D, Lu PC, Lubej M, Luo T, MacNaughton J, Masuda M, Merola M, Miyabayashi K, Miyata H, Mizuk R, Mohanty G, Mori T, Mrvar M, Mussa R, Nakao M, Nath K, Natkaniec Z, Nayak M, Niiyama M, Nisar N, Nishida S, Ogawa S, Pakhlov P, Pakhlova G, Pal B, Pardi S, Paul S, Pedlar T, Pestotnik R, Piilonen L, Popov V, Prencipe E, Prim M, Ritter M, Rostomyan A, Russo G, Sahoo D, Sakai Y, Salehi M, Sandilya S, Santelj L, Sanuki T, Savinov V, Schneider O, Schnell G, Schueler J, Schwanda C, Seino Y, Senyo K, Seon O, Sevior M, Shen C, Shibata TA, Shiu JG, Shwartz B, Simon F, Solovieva E, Stanič S, Starič M, Strube J, Sumihama M, Sumiyoshi T, Sutcliffe W, Takizawa M, Tanida K, Tao Y, Tenchini F, Uchida M, Uglov T, Unno Y, Uno S, Urquijo P, Van Tonder R, Varner G, Varvell K, Wang B, Wang C, Wang MZ, Wang P, Wang X, Watanabe M, Watanuki S, Widmann E, Won E, Yamamoto H, Yang S, Ye H, Yin J, Yuan C, Yusa Y, Zakharov S, Zhang Z, Zhilich V, Zhukova V, Zhulanov V. Search for the rare decay of
B+→ℓ+νℓγ
with improved hadronic tagging. Int J Clin Exp Med 2018. [DOI: 10.1103/physrevd.98.112016] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Grygier J, Goldenzweig P, Heck M, Adachi I, Aihara H, Al Said S, Asner D, Aushev T, Ayad R, Aziz T, Babu V, Badhrees I, Bahinipati S, Bakich A, Bansal V, Barberio E, Behera P, Bhuyan B, Biswal J, Bobrov A, Bondar A, Bonvicini G, Bozek A, Bračko M, Browder T, Červenkov D, Chang P, Chekelian V, Chen A, Cheon B, Chilikin K, Chistov R, Cho K, Choi Y, Cinabro D, Dash N, Di Carlo S, Doležal Z, Drásal Z, Dutta D, Eidelman S, Farhat H, Fast J, Ferber T, Fulsom B, Gaur V, Gabyshev N, Garmash A, Gelb M, Gillard R, Golob B, Grzymkowska O, Guido E, Haba J, Hara T, Hayasaka K, Hayashii H, Hedges M, Hsu CL, Iijima T, Inami K, Inguglia G, Ishikawa A, Itoh R, Iwasaki Y, Jacobs W, Jaegle I, Jeon H, Jin Y, Joffe D, Joo K, Julius T, Kahn J, Kaliyar A, Kang K, Karyan G, Katrenko P, Kawasaki T, Keck T, Kichimi H, Kiesling C, Kim D, Kim H, Kim J, Kim K, Kim M, Kim S, Kinoshita K, Kodyš P, Korpar S, Kotchetkov D, Križan P, Krokovny P, Kuhr T, Kulasiri R, Kumita T, Kuzmin A, Kwon YJ, Lange J, Li C, Li L, Li Y, Li Gioi L, Libby J, Liventsev D, Lubej M, Luo T, Masuda M, Matsuda T, Matvienko D, Metzner F, Miyabayashi K, Miyake H, Miyata H, Mizuk R, Mohanty G, Moon H, Mori T, Mussa R, Nakano E, Nakao M, Nanut T, Nath K, Natkaniec Z, Nayak M, Nisar N, Nishida S, Ogawa S, Okuno S, Ono H, Onuki Y, Pakhlova G, Pal B, Park CS, Park C, Park H, Paul S, Pedlar T, Pesántez L, Piilonen L, Prim M, Pulvermacher C, Ritter M, Rostomyan A, Sakai Y, Sandilya S, Santelj L, Sanuki T, Sato Y, Savinov V, Schlüter T, Schneider O, Schnell G, Schwanda C, Schwartz A, Seino Y, Senyo K, Seong I, Sevior M, Shebalin V, Shen C, Shibata TA, Shiu JG, Shwartz B, Simon F, Solovieva E, Starič M, Strube J, Sumiyoshi T, Takizawa M, Tamponi U, Tenchini F, Trabelsi K, Tsuboyama T, Uchida M, Uglov T, Unno Y, Uno S, Urquijo P, Ushiroda Y, Van Hulse C, Varner G, Vorobyev V, Vossen A, Waheed E, Wang B, Wang C, Wang MZ, Wang P, Watanabe M, Watanabe Y, Wehle S, Williams K, Won E, Yamamoto H, Yamashita Y, Ye H, Yook Y, Yuan C, Yusa Y, Zhang Z, Zhilich V, Zhukova V, Zhulanov V, Ziegler M, Zupanc A. Publisher’s Note: Search for
B→hνν¯
decays with semileptonic tagging at Belle [Phys. Rev. D
96
, 091101(R) (2017)]. Int J Clin Exp Med 2018. [DOI: 10.1103/physrevd.97.099902 10.1103/physrevd.96.091101] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Hara K, Horii Y, Iijima T, Adachi I, Aihara H, Asner DM, Aushev T, Aziz T, Bakich AM, Barrett M, Bhardwaj V, Bhuyan B, Bondar A, Bonvicini G, Bozek A, Bračko M, Browder TE, Chekelian V, Chen A, Chen P, Cheon BG, Chilikin K, Cho IS, Cho K, Choi Y, Cinabro D, Dalseno J, Dingfelder J, Doležal Z, Drásal Z, Drutskoy A, Dutta D, Eidelman S, Epifanov D, Esen S, Farhat H, Frey A, Gaur V, Gabyshev N, Ganguly S, Gillard R, Goh YM, Golob B, Haba J, Hara T, Hayasaka K, Hayashii H, Higuchi T, Hoshi Y, Inami K, Ishikawa A, Itoh R, Iwasaki Y, Iwashita T, Julius T, Kang JH, Kawasaki T, Kiesling C, Kim HO, Kim JB, Kim JH, Kim KT, Kim MJ, Kim YJ, Kinoshita K, Klucar J, Ko BR, Kodyš P, Korpar S, Kouzes RT, Križan P, Krokovny P, Kronenbitter B, Kuhr T, Kumita T, Kuzmin A, Kwon YJ, Lange JS, Lee SH, Li J, Li Y, Libby J, Liu C, Liu Y, Liu ZQ, Liventsev D, Matvienko D, Miyabayashi K, Miyata H, Mizuk R, Mohanty GB, Moll A, Mori T, Muramatsu N, Nakano E, Nakao M, Nakazawa H, Natkaniec Z, Nayak M, Ng C, Nisar NK, Nishida S, Nishimura K, Nitoh O, Nozaki T, Ohshima T, Okuno S, Olsen SL, Oswald C, Ozaki H, Pakhlov P, Pakhlova G, Park CW, Park HK, Pedlar TK, Pestotnik R, Petrič M, Piilonen LE, Prim M, Röhrken M, Ryu S, Sahoo H, Sakai K, Sakai Y, Sandilya S, Santel D, Sanuki T, Sato Y, Schneider O, Schnell G, Schwanda C, Schwartz AJ, Senyo K, Seon O, Sevior ME, Shapkin M, Shen CP, Shibata TA, Shiu JG, Shwartz B, Sibidanov A, Simon F, Smerkol P, Sohn YS, Sokolov A, Solovieva E, Starič M, Sumihama M, Sumiyoshi T, Tatishvili G, Teramoto Y, Trabelsi K, Tsuboyama T, Uchida M, Uehara S, Unno Y, Uno S, Urquijo P, Ushiroda Y, Usov Y, Van Hulse C, Vanhoefer P, Varner G, Varvell KE, Vorobyev V, Wagner MN, Wang CH, Wang MZ, Wang P, Watanabe M, Watanabe Y, Williams KM, Won E, Yabsley BD, Yamamoto H, Yamashita Y, Yusa Y, Zhang ZP, Zhilich V, Zhulanov V, Zupanc A. Evidence for B- → τ- ν(τ) with a hadronic tagging method using the full data sample of Belle. Phys Rev Lett 2013; 110:131801. [PMID: 23581309 DOI: 10.1103/physrevlett.110.131801] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2012] [Indexed: 06/02/2023]
Abstract
We measure the branching fraction of B- → τ- ν(τ) using the full Υ(4S) data sample containing 772×10(6) BB pairs collected with the Belle detector at the KEKB asymmetric-energy e+ e- collider. Events with BB pairs are tagged by reconstructing one of the B mesons decaying into hadronic final states, and B- → τ- ν(τ) candidates are detected in the recoil. We find evidence for B- → τ- ν(τ) with a significance of 3.0 standard deviations including systematic errors and measure a branching fraction B(B- → τ- ν(τ))=[0.72(-0.25)(+0.27)(stat)±0.11(syst)]×10(-4).
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Affiliation(s)
- K Hara
- High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801
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Li J, Adachi I, Aihara H, Arinstein K, Asner DM, Aulchenko V, Aushev T, Bakich AM, Bhardwaj V, Bhuyan B, Bischofberger M, Bondar A, Bozek A, Bračko M, Brovchenko O, Browder TE, Chang MC, Chen A, Chen P, Cheon BG, Chistov R, Cho K, Choi SK, Choi Y, Dalseno J, Doležal Z, Drutskoy A, Eidelman S, Esen S, Fast JE, Gaur V, Garmash A, Goh YM, Haba J, Hara T, Hayasaka K, Hayashii H, Horii Y, Hoshi Y, Hou WS, Hsiung YB, Hyun HJ, Iijima T, Inami K, Ishikawa A, Itoh R, Iwabuchi M, Iwasaki Y, Iwashita T, Julius T, Kang JH, Kapusta P, Katayama N, Kawasaki T, Kim HJ, Kim HO, Kim JB, Kim KT, Kim MJ, Kim YJ, Kinoshita K, Ko BR, Kobayashi N, Kodyš P, Korpar S, Križan P, Krokovny P, Kuhr T, Kumar R, Kuzmin A, Kwon YJ, Lange JS, Lee MJ, Lee SH, Li Y, Libby J, Liu C, Liu Y, Liu ZQ, Liventsev D, Louvot R, Matvienko D, McOnie S, Miyazaki Y, Mizuk R, Mohanty GB, Moll A, Mori T, Muramatsu N, Nakamura I, Nakano E, Nakao M, Nakazawa H, Natkaniec Z, Nishida S, Nishimura K, Nitoh O, Ogawa S, Ohshima T, Okuno S, Olsen SL, Ostrowicz W, Pakhlova G, Park CW, Park HK, Park KS, Pedlar TK, Peng T, Pestotnik R, Petrič M, Piilonen LE, Prim M, Röhrken M, Ryu S, Sahoo H, Sakai K, Sakai Y, Sanuki T, Sato Y, Schneider O, Schwanda C, Schwartz AJ, Senyo K, Seon O, Sevior ME, Shapkin M, Shebalin V, Shen CP, Shibata TA, Shiu JG, Simon F, Smerkol P, Sohn YS, Sokolov A, Stanič S, Starič M, Sumihama M, Sumiyoshi T, Tanaka S, Tatishvili G, Teramoto Y, Trabelsi K, Uchida M, Uehara S, Unno Y, Uno S, Urquijo P, Usov Y, Varner G, Varvell KE, Vorobyev V, Vossen A, Wang CH, Wang P, Watanabe M, Watanabe Y, Wicht J, Williams KM, Won E, Yamashita Y, Yuan CZ, Zhang ZP, Zhilich V, Zupanc A. First observation of B(s)(0) → J/ψη and B(s)(0) → J/ψη'. Phys Rev Lett 2012; 108:181808. [PMID: 22681063 DOI: 10.1103/physrevlett.108.181808] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2012] [Indexed: 06/01/2023]
Abstract
We report first observations of B(s)(0) → J/ψη and B(s)(0) → J/ψη'. The results are obtained from 121.4 fb(-1) of data collected at the Υ(5S) resonance with the Belle detector at the KEKB e+ e- collider. We obtain the branching fractions B(B(s)(0) → J/ψη)=[5.10±0.50(stat)±0.25(syst)(-0.79)(+1.14)(N(B(s)(*) B(s)(*))]×10(-4), and B(B(s)(0) → J/ψη')=[3.71±0.61(stat)±0.18(syst)(-0.57)(+0.83)(N(B(s)(*) B(s)(*))]×10(-4). The ratio of the two branching fractions is measured to be (B(B(s) → J/ψη'))/(B(B(s) → J/ψη))=0.73±0.14(stat)±0.02(syst).
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Affiliation(s)
- J Li
- Seoul National University, Seoul
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Bondar A, Garmash A, Mizuk R, Santel D, Kinoshita K, Adachi I, Aihara H, Arinstein K, Asner DM, Aushev T, Aziz T, Bakich AM, Barberio E, Belous K, Bhardwaj V, Bischofberger M, Bozek A, Bračko M, Browder TE, Chang MC, Chang P, Chen A, Cheon BG, Chilikin K, Chistov R, Cho IS, Cho K, Choi SK, Choi Y, Dalseno J, Danilov M, Doležal Z, Drutskoy A, Eidelman S, Epifanov D, Fast JE, Gaur V, Gabyshev N, Goh YM, Golob B, Haba J, Hara T, Hayasaka K, Hoshi Y, Hyun HJ, Iijima T, Inami K, Ishikawa A, Iwabuchi M, Iwasaki Y, Iwashita T, Julius T, Kang JH, Kawasaki T, Kichimi H, Kiesling C, Kim JB, Kim JH, Kim KT, Kim MJ, Kim YJ, Ko BR, Kobayashi N, Koblitz S, Kodyš P, Korpar S, Križan P, Kuhr T, Kumar R, Kumita T, Kuzmin A, Lange JS, Lee SH, Li J, Li Y, Libby J, Liu C, Liu ZQ, Liventsev D, Louvot R, Matvienko D, McOnie S, Miyata H, Miyazaki Y, Mohanty GB, Moll A, Muramatsu N, Mussa R, Nakao M, Natkaniec Z, Neubauer S, Niiyama M, Nishida S, Nishimura K, Nitoh O, Nozaki T, Olsen SL, Onuki Y, Pakhlov P, Pakhlova G, Park H, Park HK, Pedlar TK, Petrič M, Piilonen LE, Poluektov A, Prim M, Ritter M, Röhrken M, Ryu S, Sahoo H, Sakai Y, Santel D, Sanuki T, Schneider O, Schwanda C, Senyo K, Sevior ME, Shapkin M, Shebalin V, Shibata TA, Shiu JG, Shwartz B, Simon F, Smerkol P, Sohn YS, Sokolov A, Solovieva E, Starič M, Sumihama M, Sumiyoshi T, Tanaka S, Tatishvili G, Teramoto Y, Tikhomirov I, Uchida M, Uehara S, Uglov T, Ushiroda Y, Vahsen SE, Varner G, Vinokurova A, Wang CH, Wang MZ, Wang P, Wang XL, Watanabe Y, Williams KM, Won E, Yabsley BD, Yamashita Y, Yamauchi M, Yuan CZ, Yusa Y, Zhang ZP, Zhilich V, Zhulanov V, Zupanc A, Zyukova O. Observation of two charged bottomoniumlike resonances in Υ(5S) decays. Phys Rev Lett 2012; 108:122001. [PMID: 22540572 DOI: 10.1103/physrevlett.108.122001] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2011] [Indexed: 05/31/2023]
Abstract
We report the observation of two narrow structures in the mass spectra of the π(±)Υ(nS) (n=1, 2, 3) and π(±)h(b)(mP) (m=1, 2) pairs that are produced in association with a single charged pion in Υ(5S) decays. The measured masses and widths of the two structures averaged over the five final states are M(1)=(10,607.2±2.0) MeV/c2, Γ(1)=(18.4±2.4) MeV, and M(2)=(10,652.2±1.5) MeV/c2, Γ(2)=(11.5±2.2) MeV. The results are obtained with a 121.4 fb(-1) data sample collected with the Belle detector in the vicinity of the Υ(5S) resonance at the KEKB asymmetric-energy e+ e- collider.
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Affiliation(s)
- A Bondar
- Budker Institute of Nuclear Physics SB RAS and Novosibirsk State University, Novosibirsk 630090
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8
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Horii Y, Trabelsi K, Yamamoto H, Adachi I, Aihara H, Arinstein K, Aulchenko V, Aushev T, Balagura V, Barberio E, Belous K, Bhuyan B, Bischofberger M, Bozek A, Bračko M, Browder TE, Chang MC, Chang P, Chen A, Chen P, Cheon BG, Chiang CC, Cho IS, Cho K, Choi Y, Doležal Z, Eidelman S, Feindt M, Gaur V, Gabyshev N, Garmash A, Golob B, Ha H, Haba J, Hayasaka K, Hoshi Y, Hou WS, Hsiung YB, Hyun HJ, Iijima T, Inami K, Ishikawa A, Itoh R, Iwabuchi M, Iwasaki Y, Iwashita T, Joshi NJ, Julius T, Kang JH, Kawasaki T, Kichimi H, Kiesling C, Kim HJ, Kim HO, Kim MJ, Kim YJ, Kinoshita K, Ko BR, Kobayashi N, Korpar S, Križan P, Kuhr T, Kumar R, Kwon YJ, Lee MJ, Lee SH, Li J, Liu C, Liventsev D, Louvot R, Matyja A, McOnie S, Miyabayashi K, Miyata H, Miyazaki Y, Mohanty GB, Moll A, Mori T, Muramatsu N, Nakano E, Nakazawa H, Natkaniec Z, Neubauer S, Nishida S, Nitoh O, Ohshima T, Okuno S, Onuki Y, Pakhlov P, Pakhlova G, Park CW, Park HK, Pestotnik R, Petrič M, Piilonen LE, Poluektov A, Prim M, Prothmann K, Röhrken M, Ryu S, Sahoo H, Sakai Y, Schneider O, Schwanda C, Schwartz AJ, Senyo K, Seon O, Sevior ME, Shapkin M, Shebalin V, Shen CP, Shibata TA, Shiu JG, Simon F, Smerkol P, Sohn YS, Solovieva E, Stanič S, Starič M, Sumihama M, Sumiyoshi T, Suzuki S, Tanaka S, Teramoto Y, Uchida M, Uehara S, Uglov T, Unno Y, Uno S, Usov Y, Varner G, Vinokurova A, Vossen A, Wang CH, Wang P, Watanabe M, Watanabe Y, Wicht J, Won E, Yabsley BD, Yamashita Y, Zander D, Zhang ZP, Zhulanov V, Zupanc A. Evidence for the suppressed decay B(-)→DK(-), D→K(+)π(-). Phys Rev Lett 2011; 106:231803. [PMID: 21770499 DOI: 10.1103/physrevlett.106.231803] [Citation(s) in RCA: 4] [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: 03/30/2011] [Indexed: 05/31/2023]
Abstract
The suppressed decay chain B(-)→DK(-), D→K(+)π(-), where D indicates a D(¯)(0) or D(0) state, provides important information on the CP-violating angle ϕ(3). We measure the ratio R(DK) of the decay rates to the favored mode B(-)→DK(-), D→K(-)π(+) to be R(DK)=[1.63(-0.41)(+0.44)(stat)(-0.13)(+0.07)(syst)]×10(-2), which indicates the first evidence of the signal with a significance of 4.1σ. We also measure the asymmetry A(DK) between the charge-conjugate decays to be A(DK)=-0.39(-0.28)(+0.26)(stat)(-0.03)(+0.04)(syst). The results are based on the full 772×10(6) BB(¯) pair data sample collected at the Υ(4S) resonance with the Belle detector.
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Affiliation(s)
- Y Horii
- Tohoku University, Sendai, Japan
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9
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Li J, Aihara H, Arinstein K, Aulchenko V, Aushev T, Aziz T, Bakich AM, Balagura V, Barberio E, Belous K, Bhardwaj V, Bhuyan B, Bozek A, Bračko M, Brovchenko O, Browder TE, Chang P, Chen A, Chen P, Cheon BG, Chiang CC, Chistov R, Cho IS, Cho K, Choi SK, Choi Y, Dalseno J, Doležal Z, Drutskoy A, Eidelman S, Esen S, Feindt M, Gaur V, Gabyshev N, Garmash A, Golob B, Ha H, Haba J, Hara T, Hayashii H, Horii Y, Hoshi Y, Hou WS, Hsiung YB, Hyun HJ, Iijima T, Ishikawa A, Itoh R, Iwasaki Y, Iwashita T, Julius T, Kang JH, Kapusta P, Katayama N, Kawasaki T, Kichimi H, Kiesling C, Kim HJ, Kim HO, Kim MJ, Kim SK, Kim YJ, Kinoshita K, Ko BR, Kobayashi N, Korpar S, Križan P, Kuhr T, Kumar R, Kumita T, Kuzmin A, Kwon YJ, Lange JS, Lee MJ, Lee SH, Lim CL, Liu C, Liventsev D, Louvot R, MacNaughton J, Matyja A, McOnie S, Miyabayashi K, Miyata H, Miyazaki Y, Mohanty GB, Moll A, Nakano E, Nakao M, Nakazawa H, Natkaniec Z, Neubauer S, Nishida S, Nishimura K, Nitoh O, Nozaki T, Ohshima T, Okuno S, Olsen SL, Pakhlov P, Pakhlova G, Park CW, Park H, Park HK, Pestotnik R, Petrič M, Piilonen LE, Poluektov A, Prim M, Prothmann K, Röhrken M, Rozanska M, Ryu S, Sahoo H, Sakai Y, Schneider O, Schwanda C, Schwartz AJ, Seidl R, Senyo K, Sevior ME, Shapkin M, Shebalin V, Shen CP, Shiu JG, Shwartz B, Simon F, Singh JB, Smerkol P, Sohn YS, Sokolov A, Solovieva E, Stanič S, Starič M, Stypula J, Sumihama M, Sumiyoshi T, Suzuki S, Tanaka S, Teramoto Y, Trabelsi K, Uchida M, Uehara S, Unno Y, Uno S, Ushiroda Y, Usov Y, Vahsen SE, Varner G, Vinokurova A, Vossen A, Wang CH, Wang MZ, Watanabe M, Watanabe Y, Wicht J, Williams KM, Won E, Yabsley BD, Yamashita Y, Zander D, Zhang CC, Zhang ZP, Zhilich V, Zhou P, Zhulanov V, Zupanc A. Observation of B(s)⁰→J/ψf₀(980) and evidence for B(s)⁰→J/ψf₀(1370). Phys Rev Lett 2011; 106:121802. [PMID: 21517300 DOI: 10.1103/physrevlett.106.121802] [Citation(s) in RCA: 2] [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: 02/14/2011] [Indexed: 05/30/2023]
Abstract
We report the observation of B(s)⁰→J/ψf₀(980) and evidence for B(s)⁰→J/ψf₀(1370), which are CP eigenstate decay modes. These results are obtained from 121.4 fb⁻¹ of data collected at the Υ(5S) resonance with the Belle detector at the KEKB e(+)e⁻ collider. We measure the branching fractions B(B(s)⁰→J/ψf₀(980); f₀(980)→π(+)π⁻)=(1.16(-0.19)(+0.31)(stat)(-0.17)(+0.15)(syst)(-0.18)(+0.26)(N(B(s)((*))B(s)((*)))))×10⁻⁴ with a significance of 8.4σ, and B(B(s)⁰→J/ψf₀(1370); f₀(1370)→π(+)π⁻)=(0.34(-0.14)(+0.11)(stat)(-0.02)(+0.03)(syst)(-0.05)(+0.08)(N(B(s)((*))B(s)((*)))))×10⁻⁴ with a significance of 4.2σ. The last error listed is due to uncertainty in the number of produced B(s)((*))B(s)((*)) pairs.
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Affiliation(s)
- J Li
- Seoul National University, Seoul
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10
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Louvot R, Schneider O, Aushev T, Arinstein K, Bakich AM, Balagura V, Barberio E, Bay A, Belous K, Bischofberger M, Bondar A, Bozek A, Bracko M, Browder TE, Chang P, Chao Y, Chen A, Chen KF, Chen P, Cheon BG, Chiang CC, Cho IS, Choi Y, Danilov M, Dash M, Drutskoy A, Eidelman S, Goldenzweig P, Golob B, Ha H, Haba J, Hara T, Horii Y, Hoshi Y, Hou WS, Hsiung YB, Hyun HJ, Iijima T, Inami K, Itoh R, Iwabuchi M, Iwasaki M, Iwasaki Y, Joshi NJ, Kah DH, Kang JH, Kapusta P, Katayama N, Kawasaki T, Kiesling C, Kim HJ, Kim HO, Kim JH, Kim MJ, Kim YJ, Kinoshita K, Ko BR, Kodys P, Korpar S, Krizan P, Krokovny P, Kumita T, Kwon YJ, Kyeong SH, Lange JS, Lee MJ, Lee SH, Li J, Liu C, Matyja A, McOnie S, Miyabayashi K, Miyata H, Miyazaki Y, Mohanty GB, Nakao M, Nakazawa H, Nishida S, Nishimura K, Nitoh O, Ohshima T, Okuno S, Olsen SL, Pakhlov P, Pakhlova G, Palka H, Park H, Park HK, Pestotnik R, Petric M, Piilonen LE, Poluektov A, Prim M, Röhrken M, Ryu S, Sahoo H, Sakai Y, Schwanda C, Schwartz AJ, Senyo K, Sevior ME, Shapkin M, Shebalin V, Shen CP, Shiu JG, Singh JB, Smerkol P, Sokolov A, Stanic S, Staric M, Sumiyoshi T, Taylor GN, Teramoto Y, Trabelsi K, Uehara S, Unno Y, Uno S, Varner G, Varvell KE, Vervink K, Wang CH, Wang MZ, Wang P, Wicht J, Won E, Yabsley BD, Yamashita Y, Zhang ZP, Zivko T, Zyukova O. Observation of B(s)(0) → D(s)(*-) π+ and B(s)(0) → D(s)(*-) ρ+ and measurement of the B(s)(0) → D(s)(*-) ρ+ longitudinal polarization fraction. Phys Rev Lett 2010; 104:231801. [PMID: 20867227 DOI: 10.1103/physrevlett.104.231801] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2010] [Indexed: 05/29/2023]
Abstract
First observations of the B(s)(0) → D(s)(*-) π+, B(s)(0) → D(s)(-) ρ+ and B(s)(0) → D(s)(*-) ρ+ decays are reported together with measurements of their branching fractions: B(B(s)(0) → D(s)(*-) π+) = [2.4(-0.4)(+0.5)(stat) ± 0.3(syst) ± 0.4(f(s))]×10(-3), B(B(s)(0) → D(s)(-) ρ+) = [8.5(-1.2)(+1.3)(stat) ± 1.1(syst) ± 1.3(f(s))]×10(-3) and B(B(s)(0) → D(s)(*-) ρ+) = [11.9(-2.0)(+2.2)(stat) ± 1.7(syst) ± 1.8(f(s))]×10(-3) (f(s) = N(B(s)(*) B(s)(*))/N(bb)). From helicity-angle distributions, we measured the longitudinal polarization fraction in B(s)(0) → D(s)(*-) ρ+ decays to be f(L)(B(s)(0) → D(s)(*-) ρ+) = 1.05(-0.10)(+0.08)(stat)(-0.04)(+0.03)(syst). These results are based on a 23.6 fb(-1) data sample collected at the Υ(5S) resonance with the Belle detector at the KEKB e+ e- collider.
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Affiliation(s)
- R Louvot
- Ecole Polytechnique Fédérale de Lausanne, Lausanne
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Viñas-Salas J, Fortuny JC, Panades J, Piñol C, Prim M, Fermiñan A, Corbella G, Calderó J, Egido R. Appearance of ear tumors in Sprague-Dawley rats treated with 1,2-dimethylhydrazine when used as a model for colonic carcinogenesis. Carcinogenesis 1992; 13:493-5. [PMID: 1547541 DOI: 10.1093/carcin/13.3.493] [Citation(s) in RCA: 4] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
One of the models of colon carcinogenesis in rats is produced by s.c. injections of 1,2-dimethylhydrazine (DMH). This specific colon carcinogen provokes other tumors in the rat, notably intestinal tumors. Ear tumors are just marginally mentioned in the literature. We have studied the appearance and histologic characteristics of ear tumors produced by 19 s.c. injections of 21 mg/kg of DMH in 18 Sprague-Dawley rats: 15 tumors appeared in 13 ears of 10 rats (55% of the animals). Simultaneously there were 23 colonic tumors: four (26.6%) of the tumors were carcinomas, 10 (66.6%) papillomas and one (6.6%) pseudoepitheliomatous hyperplasia. We conclude that ear tumors induced by DMH appear in 55% of the rats and that it is not possible to distinguish macroscopically in terms of size and aspect between benign and malignant lesions.
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Affiliation(s)
- J Viñas-Salas
- Department of Medicine and Surgery, Faculty of Medicine, Estudi General de Lleida, University of Barcelona, Catalonia, Spain
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