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Wehle S, Niebuhr C, Yashchenko S, Adachi I, Aihara H, Al Said S, Asner DM, Aulchenko V, Aushev T, Ayad R, Aziz T, Babu V, Bakich AM, Bansal V, Barberio E, Bartel W, Behera P, Bhuyan B, Biswal J, Bobrov A, Bondar A, Bonvicini G, Bozek A, Bračko M, Browder TE, Červenkov D, Chang P, Chekelian V, Chen A, Cheon BG, Chilikin K, Chistov R, Cho K, Choi Y, Cinabro D, Dash N, Dingfelder J, Doležal Z, Drásal Z, Dutta D, Eidelman S, Epifanov D, Farhat H, Fast JE, Ferber T, Fulsom BG, Gaur V, Gabyshev N, Garmash A, Gillard R, Goldenzweig P, Golob B, Grzymkowska O, Guido E, Haba J, Hara T, Hayasaka K, Hayashii H, Hedges MT, Hou WS, Hsu CL, Iijima T, Inami K, Inguglia G, Ishikawa A, Itoh R, Iwasaki Y, Jacobs WW, Jaegle I, Jeon HB, Jin Y, Joffe D, Joo KK, Julius T, Kaliyar AB, Kang KH, Karyan G, Katrenko P, Kawasaki T, Kichimi H, Kiesling C, Kim DY, Kim HJ, Kim JB, Kim KT, Kim MJ, Kim SH, Kinoshita K, Koch L, Kodyš P, Korpar S, Kotchetkov D, Križan P, Krokovny P, Kuhr T, Kulasiri R, Kumita T, Kuzmin A, Kwon YJ, Lange JS, Li CH, Li L, Li Y, Li Gioi L, Libby J, Liventsev D, Lubej M, Luo T, Masuda M, Matsuda T, Miyabayashi K, Miyake H, Mizuk R, Mohanty GB, Mori T, Mussa R, Nakano E, Nakao M, Nanut T, Nath KJ, Natkaniec Z, Nayak M, Nisar NK, Nishida S, Ogawa S, Ono H, Onuki Y, Pakhlova G, Pal B, Park CS, Park CW, Park H, Paul S, Pesántez L, Piilonen LE, Pulvermacher C, Rauch J, 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 AJ, Seino Y, Senyo K, Seon O, Seong IS, Sevior ME, Shen CP, Shibata TA, Shiu JG, Shwartz B, Simon F, Sinha R, Solovieva E, Starič M, Strube JF, Sumisawa K, Sumiyoshi T, Takizawa M, Tamponi U, Tenchini F, Trabelsi K, Tsuboyama T, Uchida M, Uglov T, Unno Y, Uno S, Urquijo P, Ushiroda Y, Usov Y, Vahsen SE, Van Hulse C, Varner G, Varvell KE, Vorobyev V, Vossen A, Waheed E, Wang CH, Wang MZ, Wang P, Watanabe M, Watanabe Y, Widmann E, Williams KM, Won E, Yamamoto H, Yamashita Y, Ye H, Yook Y, Yuan CZ, Yusa Y, Zhang ZP, Zhilich V, Zhukova V, Zhulanov V, Ziegler M, Zupanc A. Lepton-Flavor-Dependent Angular Analysis of B→K^{*}ℓ^{+}ℓ^{-}. PHYSICAL REVIEW LETTERS 2017; 118:111801. [PMID: 28368653 DOI: 10.1103/physrevlett.118.111801] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2016] [Indexed: 06/07/2023]
Abstract
We present a measurement of angular observables and a test of lepton flavor universality in the B→K^{*}ℓ^{+}ℓ^{-} decay, where ℓ is either e or μ. The analysis is performed on a data sample corresponding to an integrated luminosity of 711 fb^{-1} containing 772×10^{6} BB[over ¯] pairs, collected at the ϒ(4S) resonance with the Belle detector at the asymmetric-energy e^{+}e^{-} collider KEKB. The result is consistent with standard model (SM) expectations, where the largest discrepancy from a SM prediction is observed in the muon modes with a local significance of 2.6σ.
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Nanut T, Zupanc A, Adachi I, Aihara H, Al Said S, Asner DM, Aulchenko V, Aushev T, Ayad R, Babu V, Badhrees I, Bakich AM, Bansal V, Behera P, Bhardwaj V, Biswal J, Bondar A, Bozek A, Bračko M, Browder TE, Červenkov D, Chekelian V, Chen A, Cheon BG, Chistov R, Cho K, Choi SK, Choi Y, Cinabro D, Dash N, Di Carlo S, Doležal Z, Dutta D, Eidelman S, Farhat H, Fast JE, Ferber T, Fulsom BG, Gaur V, Gabyshev N, Garmash A, Gillard R, Goldenzweig P, Golob B, Hayasaka K, Hayashii H, Hou WS, Iijima T, Inami K, Inguglia G, Ishikawa A, Iwasaki Y, Jacobs WW, Jaegle I, Joffe D, Joo KK, Julius T, Kaliyar AB, Kang KH, Kawasaki T, Kim DY, Kim JB, Kim KT, Kim MJ, Kim SH, Kinoshita K, Kodyš P, Korpar S, Krokovny P, Kuhr T, Kulasiri R, Kuzmin A, Kwon YJ, Lange JS, Lee IS, Li CH, Li L, Li Y, Li Gioi L, Libby J, Liventsev D, Lubej M, Masuda M, Matsuda T, Matvienko D, Miyabayashi K, Miyata H, Mizuk R, Mohanty GB, Moon HK, Nakao M, Nath KJ, Nayak M, Nisar NK, Nishida S, Ogawa S, Okuno S, Pakhlov P, Pakhlova G, Pal B, Park CS, Park CW, Park H, Paul S, Pedlar TK, Pesántez L, Pestotnik R, Petrič M, Piilonen LE, Prasanth K, Pulvermacher C, Rauch J, 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 AJ, Seino Y, Senyo K, Seon O, Sevior ME, Shebalin V, Shen CP, Shibata TA, Shiu JG, Shwartz B, Solovieva E, Stanič S, Starič M, Strube JF, Stypula J, Sumiyoshi T, Takizawa M, Tamponi U, Tenchini F, Trabelsi K, Uchida M, Uno S, Ushiroda Y, Varner G, Vinokurova A, Vorobyev V, Vossen A, Wang CH, Wang MZ, Wang P, Watanabe Y, Widmann E, Won E, Yamaoka J, Yamashita Y, Yelton J, Zhang ZP, Zhilich V, Zhukova V, Zhulanov V. Observation of D^{0}→ρ^{0}γ and Search for CP Violation in Radiative Charm Decays. PHYSICAL REVIEW LETTERS 2017; 118:051801. [PMID: 28211706 DOI: 10.1103/physrevlett.118.051801] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2016] [Indexed: 06/06/2023]
Abstract
We report the first observation of the radiative charm decay D^{0}→ρ^{0}γ and the first search for CP violation in decays D^{0}→ρ^{0}γ, ϕγ, and K[over ¯]^{*0}(892)γ, using a data sample of 943 fb^{-1} collected with the Belle detector at the KEKB asymmetric-energy e^{+}e^{-} collider. The branching fraction is measured to be B(D^{0}→ρ^{0}γ)=(1.77±0.30±0.07)×10^{-5}, where the first uncertainty is statistical and the second is systematic. The obtained CP asymmetries A_{CP}(D^{0}→ρ^{0}γ)=+0.056±0.152±0.006, A_{CP}(D^{0}→ϕγ)=-0.094±0.066±0.001, and A_{CP}(D^{0}→K[over ¯]^{*0}γ)=-0.003±0.020±0.000 are consistent with no CP violation. We also present an improved measurement of the branching fractions B(D^{0}→ϕγ)=(2.76±0.19±0.10)×10^{-5} and B(D^{0}→K[over ¯]^{*0}γ)=(4.66±0.21±0.21)×10^{-4}.
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Mendias CL, Schwartz AJ, Grekin JA, Gumucio JP, Sugg KB. Changes in muscle fiber contractility and extracellular matrix production during skeletal muscle hypertrophy. J Appl Physiol (1985) 2016; 122:571-579. [PMID: 27979985 DOI: 10.1152/japplphysiol.00719.2016] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2016] [Revised: 11/04/2016] [Accepted: 12/08/2016] [Indexed: 12/26/2022] Open
Abstract
Skeletal muscle can adapt to increased mechanical loads by undergoing hypertrophy. Transient reductions in whole muscle force production have been reported during the onset of hypertrophy, but contractile changes in individual muscle fibers have not been previously studied. Additionally, the extracellular matrix (ECM) stores and transmits forces from muscle fibers to tendons and bones, and determining how the ECM changes during hypertrophy is important in understanding the adaptation of muscle tissue to mechanical loading. Using the synergist ablation model, we sought to measure changes in muscle fiber contractility, collagen content, and cross-linking, and in the expression of several genes and activation of signaling proteins that regulate critical components of myogenesis and ECM synthesis and remodeling during muscle hypertrophy. Tissues were harvested 3, 7, and 28 days after induction of hypertrophy, and nonoverloaded rats served as controls. Muscle fiber specific force (sFo), which is the maximum isometric force normalized to cross-sectional area, was reduced 3 and 7 days after the onset of mechanical overload, but returned to control levels by 28 days. Collagen abundance displayed a similar pattern of change. Nearly a quarter of the transcriptome changed over the course of overload, as well as the activation of signaling pathways related to hypertrophy and atrophy. Overall, this study provides insight into fundamental mechanisms of muscle and ECM growth, and indicates that although muscle fibers appear to have completed remodeling and regeneration 1 mo after synergist ablation, the ECM continues to be actively remodeling at this time point.NEW & NOTEWORTHY This study utilized a rat synergist ablation model to integrate changes in single muscle fiber contractility, extracellular matrix composition, activation of important signaling pathways in muscle adaption, and corresponding changes in the muscle transcriptome to provide novel insight into the basic biological mechanisms of muscle fiber hypertrophy.
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Cheung Y, Ray SJ, Schwartz AJ, Hieftje GM. Use of Gradient Dilution to Detect and Correct Matrix Interferences in Inductively Coupled Plasma-Time-of-Flight Mass Spectrometry (ICP-TOFMS). APPLIED SPECTROSCOPY 2016; 70:1797-1805. [PMID: 27680086 DOI: 10.1177/0003702816661727] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2016] [Accepted: 03/23/2016] [Indexed: 06/06/2023]
Abstract
Our research group earlier used dispersion that occurs during flow injection to detect and reduce matrix interference in inductively coupled plasma-time-of-flight mass spectrometry (ICP-TOFMS). In the absence of a matrix interference, the ratio of signals from any two sample constituents should remain constant, independent of the dilution, over the course of a flow-injection transient. However, when an interferent is present, the signal ratio from different analytes will change with dilution, owing to the difference in severity of the interference on specific analytes. As a result, matrix interference can be recognized (flagged) by monitoring the signal ratios of two analytes over the course of a flow-injection transient; a ratio that changes over time indicates the presence of an interferent. The drawback of this earlier method was that dispersion, and therefore dilution, was somewhat element-specific, causing the ratios to wander even when no interference existed. Here, a gradient HPLC pump is used to overcome this drawback by creating a longer, better-controlled dilution. Under these conditions, variation in dispersion between elements is negligible and difficulties associated with it are reduced or eliminated. Further, when an interference exists, the optimal dilution factor to reduce the interference to an acceptable level can be found from the gradient-dilution curve as the point where the signal ratio between two elements becomes constant.
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Schwartz AJ, Shelley JT, Walton CL, Williams KL, Hieftje GM. Atmospheric-pressure ionization and fragmentation of peptides by solution-cathode glow discharge. Chem Sci 2016; 7:6440-6449. [PMID: 28451101 PMCID: PMC5356034 DOI: 10.1039/c6sc02032a] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2016] [Accepted: 06/24/2016] [Indexed: 12/13/2022] Open
Abstract
Modern "-omics" (e.g., proteomics, glycomics, metabolomics, etc.) analyses rely heavily on electrospray ionization and tandem mass spectrometry to determine the structural identity of target species. Unfortunately, these methods are limited to specialized mass spectrometry instrumentation. Here, a novel approach is described that enables ionization and controlled, tunable fragmentation of peptides at atmospheric pressure. In the new source, a direct-current plasma is sustained between a tapered metal rod and a flowing sample-containing solution. As the liquid stream contacts the electrical discharge, peptides from the solution are volatilized, ionized, and fragmented. At high discharge currents (e.g., 70 mA), electrospray-like spectra are observed, dominated by singly and doubly protonated molecular ions. At lower currents (35 mA), many peptides exhibit extensive fragmentation, with a-, b-, c-, x-, and y-type ion series present as well as complex fragments, such as d-type ions, not previously observed with atmospheric-pressure dissociation. Though the mechanism of fragmentation is currently unclear, observations indicate it could result from the interaction of peptides with gas-phase radicals or ultraviolet radiation generated within the plasma.
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Yang SB, Tanida K, Kim BH, Adachi I, Aihara H, Asner DM, Aulchenko V, Aushev T, Babu V, Badhrees I, Bakich AM, Barberio E, Bhardwaj V, Bhuyan B, Biswal J, Bonvicini G, Bozek A, Bračko M, Browder TE, Červenkov D, Chekelian V, Chen A, Cheon BG, Chilikin K, Chistov R, Cho K, Chobanova V, Choi Y, Cinabro D, Dalseno J, Danilov M, Dash N, Doležal Z, Drásal Z, Dutta D, Eidelman S, Farhat H, Fast JE, Ferber T, Fulsom BG, Gabyshev N, Garmash A, Gaur V, Gillard R, Goh YM, Goldenzweig P, Greenwald D, Grygier J, Haba J, Hamer P, Hara T, Hayasaka K, Hayashii H, Hou WS, Iijima T, Inami K, Inguglia G, Ishikawa A, Itoh R, Iwasaki Y, Jacobs WW, Jaegle I, Jeon HB, Joo KK, Julius T, Kang KH, Kato E, Katrenko P, Kiesling C, Kim DY, Kim HJ, Kim JB, Kim KT, Kim MJ, Kim SH, Kim SK, Kim YJ, Kinoshita K, Kobayashi N, Kodyš P, Korpar S, Križan P, Krokovny P, Kuhr T, Kuzmin A, Kwon YJ, Lange JS, Lee IS, Li CH, Li H, Li L, Li Y, Li Gioi L, Libby J, Liventsev D, Lubej M, Masuda M, Matvienko D, Miyabayashi K, Miyata H, Mizuk R, Mohanty GB, Moll A, Moon HK, Mussa R, Nakano E, Nakao M, Nanut T, Nath KJ, Nayak M, Negishi K, Niiyama M, Nisar NK, Nishida S, Ogawa S, Okuno S, Olsen SL, Pakhlova G, Pal B, Park CW, Park H, Pedlar TK, Pestotnik R, Petrič M, Piilonen LE, Pulvermacher C, Rauch J, Ritter M, Rostomyan A, Ryu S, Sahoo H, Sakai Y, Sandilya S, Santelj L, Sanuki T, Sato Y, Savinov V, Schlüter T, Schneider O, Schnell G, Schwanda C, Schwartz AJ, Seino Y, Senyo K, Seon O, Seong IS, Sevior ME, Shebalin V, Shibata TA, Shiu JG, Shwartz B, Simon F, Sohn YS, Sokolov A, Stanič S, Starič M, Stypula J, Sumihama M, Sumiyoshi T, Takizawa M, Tamponi U, Teramoto Y, Trabelsi K, Trusov V, Uchida M, Uglov T, Unno Y, Uno S, Urquijo P, Usov Y, Vanhoefer P, Varner G, Varvell KE, Vinokurova A, Vossen A, Wagner MN, Wang CH, Wang MZ, Wang P, Wang XL, Watanabe Y, Williams KM, Won E, Yamaoka J, Yashchenko S, Ye H, Yelton J, Yuan CZ, Yusa Y, Zhang ZP, Zhilich V, Zhulanov V, Zupanc A. First Observation of the Doubly Cabibbo-Suppressed Decay of a Charmed Baryon: Λ_{c}^{+}→pK^{+}π^{-}. PHYSICAL REVIEW LETTERS 2016; 117:011801. [PMID: 27419562 DOI: 10.1103/physrevlett.117.011801] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2015] [Indexed: 06/06/2023]
Abstract
We report the first observation of the decay Λ_{c}^{+}→pK^{+}π^{-} using a 980 fb^{-1} data sample collected by the Belle detector at the KEKB asymmetric-energy e^{+}e^{-} collider. This is the first observation of a doubly Cabibbo-suppressed decay of a charmed baryon. We measure the branching ratio of this decay with respect to its Cabibbo-favored counterpart to be B(Λ_{c}^{+}→pK^{+}π^{-})/B(Λ_{c}^{+}→pK^{-}π^{+})=(2.35±0.27±0.21)×10^{-3}, where the uncertainties are statistical and systematic, respectively.
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Pal B, Schwartz AJ, Abdesselam A, Adachi I, Aihara H, Asner DM, Aushev T, Ayad R, Aziz T, Babu V, Badhrees I, Bahinipati S, Bakich AM, Barberio E, Behera P, Bhardwaj V, Bhuyan B, Biswal J, Bobrov A, Bozek A, Bračko M, Browder TE, Červenkov D, Chekelian V, Chen A, Cheon BG, Chistov R, Cho K, Chobanova V, Choi Y, Cinabro D, Dalseno J, Dash N, Doležal Z, Drásal Z, Drutskoy A, Dutta D, Eidelman S, Farhat H, Fast JE, Fulsom BG, Gaur V, Garmash A, Gillard R, Goh YM, Goldenzweig P, Greenwald D, Grzymkowska O, Haba J, Hara T, Hayasaka K, Hayashii H, He XH, Hou WS, Inami K, Ishikawa A, Iwasaki Y, Jacobs WW, Jaegle I, Jeon HB, Joffe D, Joo KK, Julius T, Kang KH, Kato E, Kawasaki T, Kiesling C, Kim DY, Kim HJ, Kim KT, Kim MJ, Kim SH, Kinoshita K, Kodyš P, Korpar S, Križan P, Krokovny P, Kuhr T, Kumar R, Kumita T, Kuzmin A, Kwon YJ, Lee IS, Li CH, Li H, Li L, Li Gioi L, Libby J, Liventsev D, Lukin P, Luo T, Masuda M, Matvienko D, Miyabayashi K, Miyata H, Mizuk R, Mohanty GB, Mohanty S, Moll A, Moon HK, Mori T, Mussa R, Nakano E, Nakao M, Nanut T, Natkaniec Z, Nayak M, Nisar NK, Nishida S, Ogawa S, Okuno S, Pakhlov P, Pakhlova G, Park CW, Park H, Paul S, Pedlar TK, Pesántez L, Pestotnik R, Petrič M, Piilonen LE, Pulvermacher C, Rauch J, Ribežl E, Ritter M, Rostomyan A, Ryu S, Sahoo H, Sakai Y, Sandilya S, Sanuki T, Sato Y, Savinov V, Schlüter T, Schneider O, Schnell G, Schwanda C, Seino Y, Senyo K, Seon O, Seong IS, Shebalin V, Shibata TA, Shiu JG, Shwartz B, Simon F, Sohn YS, Sokolov A, Solovieva E, Stanič S, Starič M, Stypula J, Sumihama M, Sumiyoshi T, Tamponi U, Teramoto Y, Trabelsi K, Uchida M, Uehara S, Uglov T, Uno S, Urquijo P, Usov Y, Van Hulse C, Vanhoefer P, Varner G, Vinokurova A, Vossen A, Wagner MN, Wang CH, Wang MZ, Wang XL, Watanabe M, Watanabe Y, Williams KM, Won E, Yamaoka J, Yelton J, Yuan CZ, Yusa Y, Zhang ZP, Zhilich V, Zhulanov V, Zupanc A. Observation of the Decay B_{s}^{0}→K^{0}K[over ¯]^{0}. PHYSICAL REVIEW LETTERS 2016; 116:161801. [PMID: 27152790 DOI: 10.1103/physrevlett.116.161801] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2015] [Indexed: 06/05/2023]
Abstract
We measure the decay B_{s}^{0}→K^{0}K[over ¯]^{0} using data collected at the ϒ(5S) resonance with the Belle detector at the KEKB e^{+}e^{-} collider. The data sample used corresponds to an integrated luminosity of 121.4 fb^{-1}. We measure a branching fraction B(B_{s}^{0}→K^{0}K[over ¯]^{0})=[19.6_{-5.1}^{+5.8}(stat)±1.0(syst)±2.0(N_{B_{s}^{0}B[over ¯]_{s}^{0}})]×10^{-6} with a significance of 5.1 standard deviations. This measurement constitutes the first observation of this decay.
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Schwartz AJ, Pike RD, Herber RH, Watson EJ. Syntheses, Structures, and Mössbauer Effect Spectroscopy of Triple-Decker Complexes Incorporating Nonamethylferrocene. Organometallics 2015. [DOI: 10.1021/acs.organomet.5b00913] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Abdesselam A, Adachi I, Adametz A, Adye T, Ahmed H, Aihara H, Akar S, Alam MS, Albert J, Al Said S, Andreassen R, Angelini C, Anulli F, Arinstein K, Arnaud N, Asner DM, Aston D, Aulchenko V, Aushev T, Ayad R, Babu V, Badhrees I, Bahinipati S, Bakich AM, Band HR, Banerjee S, Barberio E, Bard DJ, Barlow RJ, Batignani G, Beaulieu A, Bellis M, Ben-Haim E, Bernard D, Bernlochner FU, Bettarini S, Bettoni D, Bevan AJ, Bhardwaj V, Bhuyan B, Bianchi F, Biasini M, Biswal J, Blinov VE, Bloom PC, Bobrov A, Bomben M, Bondar A, Bonneaud GR, Bonvicini G, Bozek A, Bozzi C, Bračko M, Briand H, Browder TE, Brown DN, Brown DN, Bünger C, Burchat PR, Buzykaev AR, Calabrese R, Calcaterra A, Calderini G, Carpinelli M, Cartaro C, Casarosa G, Cenci R, Červenkov D, Chang P, Chao DS, Chauveau J, Cheaib R, Chekelian V, Chen A, Chen C, Cheng CH, Cheon BG, Chilikin K, Chistov R, Cho K, Chobanova V, Choi HHF, Choi SK, Chrzaszcz M, Cibinetto G, Cinabro D, Cochran J, Coleman JP, Contri R, Convery MR, Cowan G, Cowan R, Cremaldi L, Dalseno J, Dasu S, Davier M, Davis CL, De Mori F, De Nardo G, Denig AG, Derkach D, de Sangro R, Dey B, Di Lodovico F, Dingfelder J, Dittrich S, Doležal Z, Dorfan J, Drásal Z, Drutskoy A, Druzhinin VP, Dubois-Felsmann GP, Dunwoodie W, Dutta D, Ebert M, Echenard B, Eidelman S, Eigen G, Eisner AM, Emery S, Ernst JA, Faccini R, Farhat H, Fast JE, Feindt M, Ferber T, Ferrarotto F, Ferroni F, Field RC, Filippi A, Finocchiaro G, Fioravanti E, Flood KT, Ford WT, Forti F, Franco Sevilla M, Fritsch M, Fry JR, Fulsom BG, Gabathuler E, Gabyshev N, Gamba D, Garmash A, Gary JW, Garzia I, Gaspero M, Gaur V, Gaz A, Gershon TJ, Getzkow D, Gillard R, Li Gioi L, Giorgi MA, Glattauer R, Godang R, Goh YM, Goldenzweig P, Golob B, Golubev VB, Gorodeisky R, Gradl W, Graham MT, Grauges E, Griessinger K, Gritsan AV, Grosdidier G, Grünberg O, Guttman N, Haba J, Hafner A, Hamilton B, Hara T, Harrison PF, Hast C, Hayasaka K, Hayashii H, Hearty C, He XH, Hess M, Hitlin DG, Hong TM, Honscheid K, Hou WS, Hsiung YB, Huard Z, Hutchcroft DE, Iijima T, Inguglia G, Innes WR, Ishikawa A, Itoh R, Iwasaki Y, Izen JM, Jaegle I, Jawahery A, Jessop CP, Joffe D, Joo KK, Julius T, Kang KH, Kass R, Kawasaki T, Kerth LT, Khan A, Kiesling C, Kim DY, Kim JB, Kim JH, Kim KT, Kim P, Kim SH, Kim YJ, King GJ, Kinoshita K, Ko BR, Koch H, Kodyš P, Kolomensky YG, Korpar S, Kovalskyi D, Kowalewski R, Kravchenko EA, Križan P, Krokovny P, Kuhr T, Kumar R, Kuzmin A, Kwon YJ, Lacker HM, Lafferty GD, Lanceri L, Lange DJ, Lankford AJ, Latham TE, Leddig T, Le Diberder F, Lee DH, Lee IS, Lee MJ, Lees JP, Leith DWGS, Leruste P, Lewczuk MJ, Lewis P, Libby J, Lockman WS, Long O, Lopes Pegna D, LoSecco JM, Lou XC, Lueck T, Luitz S, Lukin P, Luppi E, Lusiani A, Luth V, Lutz AM, Lynch G, MacFarlane DB, Malaescu B, Mallik U, Manoni E, Marchiori G, Margoni M, Martellotti S, Martinez-Vidal F, Masuda M, Mattison TS, Matvienko D, McKenna JA, Meadows BT, Miyabayashi K, Miyashita TS, Miyata H, Mizuk R, Mohanty GB, Moll A, Monge MR, Moon HK, Morandin M, Muller DR, Mussa R, Nakano E, Nakazawa H, Nakao M, Nanut T, Nayak M, Neal H, Neri N, Nisar NK, Nishida S, Nugent IM, Oberhof B, Ocariz J, Ogawa S, Okuno S, Olaiya EO, Olsen J, Ongmongkolkul P, Onorato G, Onuchin AP, Onuki Y, Ostrowicz W, Oyanguren A, Pakhlova G, Pakhlov P, Palano A, Pal B, Palombo F, Pan Y, Panduro Vazquez W, Paoloni E, Park CW, Park H, Passaggio S, Patel PM, Patrignani C, Patteri P, Payne DJ, Pedlar TK, Peimer DR, Peruzzi IM, Pesántez L, Pestotnik R, Petrič M, Piccolo M, Piemontese L, Piilonen LE, Pilloni A, Piredda G, Playfer S, Poireau V, Porter FC, Posocco M, Prasad V, Prell S, Prepost R, Puccio EMT, Pulliam T, Purohit MV, Pushpawela BG, Rama M, Randle-Conde A, Ratcliff BN, Raven G, Ribežl E, Richman JD, Ritchie JL, Rizzo G, Roberts DA, Robertson SH, Röhrken M, Roney JM, Roodman A, Rossi A, Rostomyan A, Rotondo M, Roudeau P, Sacco R, Sakai Y, Sandilya S, Santelj L, Santoro V, Sanuki T, Sato Y, Savinov V, Schindler RH, Schneider O, Schnell G, Schroeder T, Schubert KR, Schumm BA, Schwanda C, Schwartz AJ, Schwitters RF, Sciacca C, Seiden A, Sekula SJ, Senyo K, Seon O, Serednyakov SI, Sevior ME, Shapkin M, Shebalin V, Shen CP, Shibata TA, Shiu JG, Simard M, Simi G, Simon F, Simonetto F, Skovpen YI, Smith AJS, Smith JG, Snyder A, So RY, Sobie RJ, Soffer A, Sohn YS, Sokoloff MD, Sokolov A, Solodov EP, Solovieva E, Spaan B, Spanier SM, Starič M, Stocchi A, Stroili R, Stugu B, Su D, Sullivan MK, Sumihama M, Sumisawa K, Sumiyoshi T, Summers DJ, Sun L, Tamponi U, Taras P, Tasneem N, Teramoto Y, Tisserand V, Todyshev KY, Toki WH, Touramanis C, Trabelsi K, Tsuboyama T, Uchida M, Uglov T, Unno Y, Uno S, Usov Y, Uwer U, Vahsen SE, Van Hulse C, Vanhoefer P, Varner G, Vasseur G, Va'vra J, Verderi M, Vinokurova A, Vitale L, Vorobyev V, Voß C, Wagner MN, Wagner SR, Waldi R, Walsh JJ, Wang CH, Wang MZ, Wang P, Watanabe Y, West CA, Williams KM, Wilson FF, Wilson JR, Wisniewski WJ, Won E, Wormser G, Wright DM, Wu SL, Wulsin HW, Yamamoto H, Yamaoka J, Yashchenko S, Yuan CZ, Yusa Y, Zallo A, Zhang CC, Zhang ZP, Zhilich V, Zhulanov V, Zupanc A. First Observation of CP Violation in B[over ¯]^{0}→D_{CP}^{(*)}h^{0} Decays by a Combined Time-Dependent Analysis of BABAR and Belle Data. PHYSICAL REVIEW LETTERS 2015; 115:121604. [PMID: 26430984 DOI: 10.1103/physrevlett.115.121604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2015] [Indexed: 06/05/2023]
Abstract
We report a measurement of the time-dependent CP asymmetry of B[over ¯]^{0}→D_{CP}^{(*)}h^{0} decays, where the light neutral hadron h^{0} is a π^{0}, η, or ω meson, and the neutral D meson is reconstructed in the CP eigenstates K^{+}K^{-}, K_{S}^{0}π^{0}, or K_{S}^{0}ω. The measurement is performed combining the final data samples collected at the ϒ(4S) resonance by the BABAR and Belle experiments at the asymmetric-energy B factories PEP-II at SLAC and KEKB at KEK, respectively. The data samples contain (471±3)×10^{6} BB[over ¯] pairs recorded by the BABAR detector and (772±11)×10^{6} BB[over ¯] pairs recorded by the Belle detector. We measure the CP asymmetry parameters -η_{f}S=+0.66±0.10(stat)±0.06(syst) and C=-0.02±0.07(stat)±0.03(syst). These results correspond to the first observation of CP violation in B[over ¯]^{0}→D_{CP}^{(*)}h^{0} decays. The hypothesis of no mixing-induced CP violation is excluded in these decays at the level of 5.4 standard deviations.
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Pesántez L, Urquijo P, Dingfelder J, Abdesselam A, Adachi I, Adamczyk K, Aihara H, Al Said S, Arinstein K, Asner DM, Aulchenko V, Aushev T, Ayad R, Bahinipati S, Bakich AM, Bansal V, Barberio E, Bhardwaj V, Bhuyan B, Bobrov A, Bondar A, Bonvicini G, Bozek A, Bračko M, Browder TE, Červenkov D, Chekelian V, Chen A, Cheon BG, Chilikin K, Chistov R, Cho K, Chobanova V, Choi Y, Cinabro D, Dalseno J, Doležal Z, Drásal Z, Drutskoy A, Dutta D, Eidelman S, Farhat H, Fast JE, Ferber T, Frost O, Gaur V, Gabyshev N, Ganguly S, Garmash A, Getzkow D, Gillard R, Goh YM, Golob B, Haba J, Hasenbusch J, Hayashii H, He XH, Heller A, Horiguchi T, Hou WS, Huschle M, Iijima T, Inami K, Ishikawa A, Itoh R, Iwasaki Y, Jaegle I, Joffe D, Julius T, Kang KH, Kato E, Kawasaki T, Kiesling C, Kim DY, Kim JB, Kim JH, Kim KT, Kim MJ, Kim SH, Kim YJ, Ko BR, Kodyš P, Korpar S, Križan P, Krokovny P, Kronenbitter B, Kuhr T, Kumita T, Kuzmin A, Kwon YJ, Lange JS, Lee IS, Li Y, Li Gioi L, Libby J, Liventsev D, Lukin P, Matvienko D, Miyabayashi K, Miyata H, Mizuk R, Mohanty GB, Moll A, Moon HK, Nakano E, Nakao M, Nanut T, Natkaniec Z, Nayak M, Ng C, Nisar NK, Nishida S, Ogawa S, Okuno S, Olsen SL, Oswald C, Pakhlov P, Pakhlova G, Park CW, Park H, Pedlar TK, Pestotnik R, Petrič M, Piilonen LE, Ribežl E, Ritter M, Rostomyan A, Rozanska M, Sakai Y, Sandilya S, Santelj L, Sanuki T, Sato Y, Savinov V, Schneider O, Schnell G, Schwanda C, Schwartz AJ, Senyo K, Seon O, Sevior ME, Shebalin V, Shen CP, Shibata TA, Shiu JG, Shwartz B, Sibidanov A, Simon F, Sohn YS, Sokolov A, Solovieva E, Starič M, Steder M, Sumiyoshi T, Tamponi U, Taniguchi N, Tatishvili G, Teramoto Y, Trabelsi K, Uchida M, Uglov T, Unno Y, Uno S, Usov Y, Van Hulse C, Vanhoefer P, Varner G, Vinokurova A, Vorobyev V, Wagner MN, Wang B, Wang CH, Wang MZ, Wang P, Watanabe Y, Williams KM, Won E, Yamaoka J, Yashchenko S, Yook Y, Zhang ZP, Zhilich V, Zhulanov V, Zupanc A. Measurement of the Direct CP Asymmetry in B¯→X(s+dγ) Decays with a Lepton Tag. PHYSICAL REVIEW LETTERS 2015; 114:151601. [PMID: 25933306 DOI: 10.1103/physrevlett.114.151601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2015] [Indexed: 06/04/2023]
Abstract
We report the measurement of the direct CP asymmetry in the radiative B¯→X(s+dγ) decay using a data sample of (772 ± 11)×10(6) BB[over ¯] pairs collected at the ϒ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. The CP asymmetry is measured as a function of the photon energy threshold. For Eγ*≥2.1 GeV, where Eγ* is the photon energy in the center-of-mass frame, we obtain A(CP)(B¯→X(s+dγ))=(2.2±3.9±0.9)%, consistent with the standard model prediction.
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Ko BR, Won E, Adachi I, Aihara H, Arinstein K, Asner DM, Aulchenko V, Aushev T, Bala A, Bhardwaj V, Bhuyan B, Bobrov A, Bondar A, Bozek A, Bračko M, Browder TE, Cervenkov D, Chen A, Cheon BG, Chilikin K, Chistov R, Cho IS, Cho K, Chobanova V, Choi SK, Choi Y, Cinabro D, Dalseno J, Danilov M, Doležal Z, Drásal Z, Dutta D, Dutta K, Eidelman S, Epifanov D, Farhat H, Fast JE, Ferber T, Gaur V, Ganguly S, Garmash A, Gillard R, Glattauer R, Goh YM, Golob B, Haba J, Hara T, Hayashii H, He XH, Higuchi T, Hoshi Y, Hou WS, Hyun HJ, Iijima T, Ishikawa A, Itoh R, Iwasaki Y, Iwashita T, Jaegle I, Julius T, Kawasaki T, Kiesling C, Kim DY, Kim JB, Kim JH, Kim MJ, Kim YJ, Klucar J, Kodyš P, Korpar S, Križan P, Krokovny P, Kuhr T, Kumita T, Kuzmin A, Kwon YJ, Lange JS, Lee SH, Li J, Li Y, Libby J, Liu C, Liu ZQ, Lukin P, Matvienko D, Miyabayashi K, Miyata H, Mohanty GB, Moll A, Mussa R, Nagasaka Y, Nakano E, Nakao M, Natkaniec Z, Nayak M, Nedelkovska E, Nisar NK, Nitoh O, Ogawa S, Okuno S, Pakhlova G, Park CW, Park HK, Pedlar TK, Peng T, Petrič M, Piilonen LE, Ritter M, Röhrken M, Rostomyan A, Ryu S, Sahoo H, Sakai Y, Santelj L, Sanuki T, Savinov V, Schneider O, Schnell G, Schwanda C, Schwartz AJ, Seidl R, Seon O, Sevior ME, Shapkin M, Shen CP, Shibata TA, Shiu JG, Shwartz B, Sibidanov A, Simon F, Singh JB, Sohn YS, Sokolov A, Stanič S, Starič M, Steder M, Sumiyoshi T, Tamponi U, Tatishvili G, Teramoto Y, Trabelsi K, Uchida M, Uehara S, Uglov T, Unno Y, Uno S, Urquijo P, Usov Y, Vahsen SE, Van Hulse C, Vanhoefer P, Varner G, Vinokurova A, Vorobyev V, Wagner MN, Wang CH, Wang MZ, Wang P, Watanabe Y, Yamamoto H, Yamashita Y, Yashchenko S, Yook Y, Zhang CC, Zhang ZP, Zhilich V, Zupanc A. Observation of D0-D0 mixing in e+e- collisions. PHYSICAL REVIEW LETTERS 2014; 112:111801. [PMID: 24702349 DOI: 10.1103/physrevlett.112.111801] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2014] [Indexed: 06/03/2023]
Abstract
We observe D(0)-D(0) mixing in the decay D(0) → K+π- using a data sample of integrated luminosity 976 fb(-1) collected with the Belle detector at the KEKB e+e- asymmetric-energy collider. We measure the mixing parameters x'(2) = (0.09 ± 0.22) × 10(-3) and y'=(4.6 ± 3.4) × 10(-3) and the ratio of doubly Cabibbo-suppressed to Cabibbo-favored decay rates R(D) = (3.53 ± 0.13) × 10(-3), where the uncertainties are statistical and systematic combined. Our measurement excludes the no-mixing hypothesis at the 5.1 standard deviation level.
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Kim BH, Olsen SL, Adachi I, Aihara H, Asner DM, Aulchenko V, Bay A, Belous K, Bhuyan B, Bonvicini G, Bozek A, Bračko M, Browder TE, Chekelian V, Chen A, Cheon BG, Chilikin K, Chistov R, Cho IS, Cho K, Chobanova V, Choi SK, Choi Y, Cinabro D, Dalseno J, Doležal Z, Eidelman S, Epifanov D, Esen S, Farhat H, Fast JE, Gaur V, Ganguly S, Gillard R, Goh YM, Hayasaka K, Hayashii H, Hoshi Y, Hou WS, Hsiung YB, Hyun HJ, Inami K, Ishikawa A, Itoh R, Iwasaki Y, Julius T, Kah DH, Kang JH, Kapusta P, Kato E, Kichimi H, Kim HJ, Kim HO, Kim JH, Kim KT, Kim MJ, Kim SK, Kim YJ, Kinoshita K, Klucar J, Ko BR, Kodyš P, Korpar S, Kouzes RT, Križan P, Krokovny P, Kumita T, Kuzmin A, Kwon YJ, Lange JS, Lee SH, Li J, Li X, Li Y, Libby J, Liventsev D, Matvienko D, Miyabayashi K, Miyata H, Mizuk R, Mohanty GB, Moll A, Muramatsu N, Mussa R, Nakano E, Nakao M, Nedelkovska E, Ng C, Nisar NK, Nishida S, Nishimura K, Ohshima T, Okuno S, Pakhlov P, Pakhlova G, Park H, Park HK, Peters M, Petrič M, Piilonen LE, Ritter M, Ryu S, Sahoo H, Sakai Y, Sandilya S, Sanuki T, Savinov V, Schneider O, Schnell G, Schwanda C, Schwartz AJ, Semmler D, Senyo K, Seon O, Sevior ME, Shapkin M, Shebalin V, Shen CP, Shibata TA, Shiu JG, Shwartz B, Simon F, Smerkol P, Sohn YS, Sokolov A, Solovieva E, Stanič S, Starič M, Sumihama M, Sumiyoshi T, Tamponi U, Tanida K, Tatishvili G, Teramoto Y, Trabelsi K, Uchida M, Uehara S, Uglov T, Unno Y, Uno S, Usov Y, Van Hulse C, Varner G, Vorobyev V, Wagner MN, Wang CH, Wang P, Watanabe Y, Williams KM, Won E, Yamashita Y, Zhilich V, Zupanc A. Search for an H-dibaryon with a mass near 2mΛ in Υ(1S) and Υ(2S) decays. PHYSICAL REVIEW LETTERS 2013; 110:222002. [PMID: 23767713 DOI: 10.1103/physrevlett.110.222002] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2013] [Revised: 05/03/2013] [Indexed: 06/02/2023]
Abstract
We report the results of a high-statistics search for H dibaryon production in inclusive Υ(1S) and Υ(2S) decays. No indication of an H dibaryon with a mass near the M(H)=2m(Λ) threshold is seen in either the H→Λpπ(-) or ΛΛ decay channels and 90% confidence level branching-fraction upper limits are set that are between one and two orders of magnitude below the measured branching fractions for inclusive Υ(1S) and Υ(2S) decays to antideuterons. Since Υ(1S,2S) decays produce flavor-SU(3)-symmetric final states, these results put stringent constraints on H dibaryon properties. The results are based on analyses of 102 million Υ(1S) and 158 million Υ(2S) events collected with the Belle detector at the KEKB e(+)e(-) collider.
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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. PHYSICAL REVIEW LETTERS 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] [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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Schwartz AJ, Wang Z, Ray SJ, Hieftje GM. Universal Anion Detection by Replacement-Ion Chromatography with an Atmospheric-Pressure Solution-Cathode Glow Discharge Photometric Detector. Anal Chem 2012; 85:129-37. [DOI: 10.1021/ac3022554] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Ko BR, Won E, Adachi I, Aihara H, Asner DM, Aulchenko V, Aushev T, Aziz T, Bakich AM, Belous K, Bhardwaj V, Bhuyan B, Bischofberger M, Bondar A, Bonvicini G, Bozek A, Bračko M, Browder TE, Chang MC, Chen A, Chen P, Cheon BG, Chilikin K, Cho IS, Cho K, Choi Y, Doležal Z, Drásal Z, Eidelman S, Fast JE, Gaur V, Gabyshev N, Garmash A, Goh YM, Golob B, Haba J, Hayasaka K, Hayashii H, Horii Y, Hoshi Y, Hou WS, Hsiung YB, Hyun HJ, Iijima T, Ishikawa A, Itoh R, Iwabuchi M, Iwasaki Y, Iwashita T, Julius T, Kang JH, Kawasaki T, Kiesling C, Kim HO, Kim JB, Kim KT, Kim MJ, Kim YJ, Kinoshita K, Koblitz S, Kodyš P, Korpar S, Križan P, Krokovny P, Kuhr T, Kuzmin A, Kwon YJ, Lange JS, Lee SH, Li J, Li Y, Libby J, Lim CL, Liu C, Liu Y, Liu ZQ, Liventsev D, Louvot R, Matvienko D, Miyazaki Y, Mizuk R, Mohanty GB, Moll A, Mori T, Muramatsu N, Nagasaka Y, Nakano E, Nakao M, Nakazawa H, Natkaniec Z, Nishida S, Nishimura K, Nitoh O, Ogawa S, Ohshima T, Okuno S, Olsen SL, Onuki Y, Ostrowicz W, Pakhlov P, Pakhlova G, Park CW, Park HK, Park KS, Pedlar TK, Pestotnik R, Petrič M, Piilonen LE, Poluektov A, Ritter M, Röhrken M, Ryu S, Sahoo H, Sakai K, Sakai Y, Sanuki T, Sato Y, Schneider O, Schwanda C, Schwartz AJ, Seidl R, Senyo K, Sevior ME, Shapkin M, Shebalin V, Shen CP, Shibata TA, Shiu JG, Shwartz B, Sibidanov A, Simon F, Smerkol P, Sohn YS, Sokolov A, Solovieva E, Stanič S, Starič M, Sumiyoshi T, Tanaka S, Tatishvili G, Teramoto Y, Trabelsi K, Tsuboyama T, Uchida M, Uehara S, Unno Y, Uno S, Varner G, Varvell KE, Vinokurova A, Vorobyev V, Wang CH, Wang P, Wang XL, Watanabe M, Watanabe Y, Yamamoto H, Yamashita Y, Yuan CZ, Zhang CC, Zhang ZP, Zhilich V, Zhulanov V, Zupanc A. Evidence for CP violation in the decay D+ → K(S)(0)π+. PHYSICAL REVIEW LETTERS 2012; 109:021601. [PMID: 23030153 DOI: 10.1103/physrevlett.109.021601] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2012] [Indexed: 06/01/2023]
Abstract
We observe evidence for CP violation in the decay D+ → K(S)(0)π+ using a data sample with an integrated luminosity of 977 fb(-1) collected by the Belle detector at the KEKB e+ e- asymmetric-energy collider. The CP asymmetry in the decay is measured to be (-0.363±0.094±0.067)%, which is 3.2 standard deviations away from zero, and is consistent with the expected CP violation due to the neutral kaon in the final state.
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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'. PHYSICAL REVIEW LETTERS 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] [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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Adachi I, Aihara H, Asner DM, Aulchenko V, Aushev T, Aziz T, Bakich AM, Bay A, Bhardwaj V, Bhuyan B, Bischofberger M, Bondar A, Bozek A, Bračko M, Browder TE, Chen P, Cheon BG, Chilikin K, Chistov R, Cho K, Choi SK, Choi Y, Dalseno J, Danilov M, Doležal Z, Drásal Z, Eidelman S, Epifanov D, Fast JE, Gaur V, Gabyshev N, Garmash A, Goh YM, Golob B, Haba J, Hara K, Hara T, Hayasaka K, Hayashii H, Higuchi T, Horii Y, Hoshi Y, Hou WS, Hsiung YB, Hyun HJ, Iijima T, Ishikawa A, Itoh R, Iwabuchi M, Iwasaki Y, Iwashita T, Julius T, Kapusta P, Katayama N, Kawasaki T, Kichimi H, Kiesling C, Kim HJ, Kim HO, Kim JB, Kim JH, Kim KT, Kim YJ, Kinoshita K, Ko BR, Koblitz S, Kodyš P, Korpar S, Križan P, Krokovny P, Kuhr T, Kumar R, Kumita T, Kuzmin A, Kwon YJ, Lange JS, Lee SH, Li J, Li Y, Liu C, Liu Y, Liu ZQ, Liventsev D, Louvot R, Matvienko D, McOnie S, Miyabayashi K, Miyata H, Miyazaki Y, Mizuk R, Mohanty GB, Mori T, Muramatsu N, Nakano E, Nakao M, Nakazawa H, Neubauer S, Nishida S, Nishimura K, Nitoh O, Ogawa S, Ohshima T, Okuno S, Olsen SL, Onuki Y, Ozaki H, Pakhlov P, Pakhlova G, Park HK, Park KS, Pedlar TK, Pestotnik R, Petrič M, Piilonen LE, Poluektov A, Röhrken M, Rozanska M, Sahoo H, Sakai K, Sakai Y, Sanuki T, Sato Y, Schneider O, Schwanda C, Schwartz AJ, Senyo K, Shebalin V, Shen CP, Shibata TA, Shiu JG, Shwartz B, Sibidanov A, Simon F, Singh JB, Smerkol P, Sohn YS, Sokolov A, Solovieva E, Stanič S, Starič M, Sumihama M, Sumisawa K, Sumiyoshi T, Tanaka S, Tatishvili G, Teramoto Y, Tikhomirov I, Trabelsi K, Tsuboyama T, Uchida M, Uehara S, Uglov T, Unno Y, Uno S, Ushiroda Y, Vahsen SE, Varner G, Varvell KE, Vinokurova A, Vorobyev V, Wang CH, Wang MZ, Wang P, Watanabe M, Watanabe Y, Williams KM, Won E, Yabsley BD, Yamamoto H, Yamashita Y, Yamauchi M, Yusa Y, Zhang ZP, Zhilich V, Zupanc A, Zyukova O. Precise measurement of the CP violation parameter sin2φ1 in B0→(cc¯)K0 decays. PHYSICAL REVIEW LETTERS 2012; 108:171802. [PMID: 22680852 DOI: 10.1103/physrevlett.108.171802] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2012] [Indexed: 06/01/2023]
Abstract
We present a precise measurement of the CP violation parameter sin2φ1 and the direct CP violation parameter A(f) using the final data sample of 772×10(6) BB[over ¯] pairs collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. One neutral B meson is reconstructed in a J/ψK(S)(0), ψ(2S)K(S)(0), χ(c1)K(S)(0), or J/ψK(L)(0) CP eigenstate and its flavor is identified from the decay products of the accompanying B meson. From the distribution of proper-time intervals between the two B decays, we obtain the following CP violation parameters: sin2φ1=0.667±0.023(stat)±0.012(syst) and A(f)=0.006±0.016(stat)±0.012(syst).
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Sato Y, Yamamoto H, Aihara H, Asner DM, Aulchenko V, Aushev T, Aziz T, Bakich AM, Bhardwaj V, Bhuyan B, Bischofberger M, Bondar A, Bozek A, Bračko M, Browder TE, Chang P, Chen P, Cheon BG, Chilikin K, Chistov R, Cho IS, Cho K, Choi SK, Choi Y, Dalseno J, Doležal Z, Drásal Z, Eidelman S, Epifanov D, Fast JE, Gaur V, Gabyshev N, Goh YM, Golob B, Haba J, Hara T, Hayasaka K, Hayashii H, Horii Y, Hoshi Y, Hou WS, Hyun HJ, Ishikawa A, Itoh R, Iwabuchi M, Iwasaki Y, Iwashita T, Julius T, Kapusta P, Kawasaki T, Kichimi H, Kiesling C, Kim HJ, Kim HO, Kim JB, Kim JH, Kim KT, Kim MJ, Kim SK, Kim YJ, Kinoshita K, Ko BR, Kobayashi N, Kodyš P, Korpar S, Križan P, Krokovny P, Kuhr T, Kumar R, Kumita T, Kuzmin A, Kwon YJ, Lange JS, Lee SH, Li J, Li Y, Liu C, Liu ZQ, Louvot R, McOnie S, Miyabayashi K, Miyata H, Mizuk R, Mohanty GB, Moll A, Muramatsu N, Nakano E, Nakao M, Nakazawa H, Natkaniec Z, Nishida S, Nishimura K, Nitoh O, Ogawa S, Ohshima T, Okuno S, Olsen SL, Onuki Y, Ostrowicz W, Pakhlov P, Pakhlova G, Park CW, Park H, Park HK, Pedlar TK, Petrič M, Piilonen LE, Poluektov A, Röhrken M, Ryu S, Sahoo H, Sakai Y, Sanuki T, Schneider O, Schwanda C, Schwartz AJ, Seidl R, 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, Stanič S, Starič M, Stypula J, Sumihama M, Sumiyoshi T, Tanaka S, Tatishvili G, Teramoto Y, Trabelsi K, Uchida M, Uglov T, Unno Y, Uno S, Urquijo P, Varner G, Varvell KE, Wang CH, Wang MZ, Wang P, Wang XL, Watanabe M, Watanabe Y, Wicht J, Won E, Yabsley BD, Yamashita Y, Yusa Y, Zhang ZP, Zhilich V, Zhulanov V, Zupanc A. Measurement of the CP-violation parameter sin2φ1 with a new tagging method at the Υ(5S) resonance. PHYSICAL REVIEW LETTERS 2012; 108:171801. [PMID: 22680851 DOI: 10.1103/physrevlett.108.171801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2012] [Indexed: 06/01/2023]
Abstract
We report a measurement of the CP-violation parameter sin2φ1 at the Υ(5S) resonance using a new tagging method, called "B-π tagging." In Υ(5S) decays containing a neutral B meson, a charged B, and a charged pion, the neutral B is reconstructed in the J/ψK(S)(0) CP-eigenstate decay channel. The initial flavor of the neutral B meson at the moment of the Υ(5S) decay is opposite to that of the charged B and may thus be inferred from the charge of the pion without reconstructing the charged B. From the asymmetry between B-π(+) and B-π(-) tagged J/ψK(S)(0) yields, we determine sin2φ1=0.57±0.58(stat)±0.06(syst). The results are based on 121 fb(-1) of data recorded by the Belle detector at the KEKB e(+)e(-) collider.
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Starič M, Aihara H, Arinstein K, Asner DM, Aushev T, Bakich AM, Bay A, Bhardwaj V, Bhuyan B, Bozek A, Bračko M, Browder TE, Chen A, Chen P, Cheon BG, Chilikin K, Chistov R, Cho IS, Cho K, Choi Y, Doležal Z, Drásal Z, Eidelman S, Fast JE, Gaur V, Gabyshev N, Golob B, Haba J, Hayasaka K, Horii Y, Hoshi Y, Hou WS, Hsiung YB, Iijima T, Inami K, Ishikawa A, Itoh R, Iwabuchi M, Iwasaki Y, Iwashita T, Julius T, Kang JH, Kawasaki T, Kiesling C, Kim HJ, Kim HO, Kim JB, Kim KT, Kim MJ, Kim YJ, Kinoshita K, Ko BR, Kobayashi N, Koblitz S, Kodyš P, Korpar S, Križan P, Kumita T, Kwon YJ, Lange JS, Lee SH, Li J, Li Y, Libby J, Liu C, Liu ZQ, Louvot R, McOnie S, Miyabayashi K, Miyata H, Miyazaki Y, Mohanty GB, Nakano E, Natkaniec Z, Nishida S, Nitoh O, Nozaki T, Ohshima T, Okuno S, Olsen SL, Pakhlova G, Park HK, Park KS, Pestotnik R, Petrič M, Piilonen LE, Röhrken M, Ryu S, Sahoo H, Sakai K, Sakai Y, Sanuki T, Schneider O, Schwanda C, Schwartz AJ, Seon O, Sevior ME, Shebalin V, Shen CP, Shibata TA, Shiu JG, Shwartz B, Simon F, Smerkol P, Sohn YS, Sokolov A, Stanič S, Sumihama M, Sumisawa K, Tatishvili G, Teramoto Y, Trabelsi K, Uchida M, Uehara S, Uglov T, Unno Y, Uno S, Urquijo P, Varner G, Vossen A, Wang CH, Wang MZ, Watanabe M, Watanabe Y, Williams KM, Won E, Yabsley BD, Yamashita Y, Yuan CZ, Zhang CC, Zhang ZP, Zhilich V, Zhulanov V, Zupanc A. Search for CP violation in D± meson decays to ϕπ±. PHYSICAL REVIEW LETTERS 2012; 108:071801. [PMID: 22401192 DOI: 10.1103/physrevlett.108.071801] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2011] [Indexed: 05/31/2023]
Abstract
We search for CP violation in Cabibbo-suppressed charged D meson decays by measuring the difference between the CP-violating asymmetries for the Cabibbo-suppressed decays D(±)→K(+)K(-)π(±) and the Cabibbo-favored decays D(s)(±)→K(+)K(-)π(±) in the K(+)K(-) mass region of the ϕ resonance. Using 955 fb(-1) of data collected with the Belle detector, we obtain A(CP)(D+→ϕπ+)=(+0.51±0.28±0.05)%. The measurement improves the sensitivity of previous searches by more than a factor of 5. We find no evidence for direct CP violation.
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Hoi CT, Chang P, Aihara H, Asner DM, Aushev T, Bakich AM, Belous K, Bhardwaj V, Bhuyan B, Bischofberger M, Bondar A, Bozek A, Bračko M, Browder TE, Chang MC, Chao Y, Chen A, Chen KF, Chen P, Cheon BG, Chilikin K, Cho K, Choi Y, Danilov M, Drásal Z, Drutskoy A, Eidelman S, Fast JE, Gaur V, Gabyshev N, Goh YM, Golob B, Haba J, Hayasaka K, Hoshi Y, Hou WS, Hsiung YB, Hyun HJ, Inami K, Ishikawa A, Iwabuchi M, Iwasaki Y, Iwashita T, Kang JH, Kawasaki T, Kim HJ, Kim HO, Kim JB, Kim JH, Kim KT, Kim MJ, Kinoshita K, Ko BR, Kobayashi N, Kodyš P, Korpar S, Križan P, Kuhr T, Kumita T, Kwon YJ, Lee SH, Li J, Libby J, Liu ZQ, Louvot R, Matvienko D, McOnie S, Miyabayashi K, Miyata H, Mohanty GB, Moll A, Nakano E, Nakao M, Neubauer S, Nishida S, Nishimura K, Nitoh O, Ohshima T, Okuno S, Park CW, Park HK, Pedlar TK, Pestotnik R, Petrič M, Piilonen LE, Ritter M, Röhrken M, Sahoo H, Sakai Y, Sanuki T, Schneider O, Schwanda C, Schwartz AJ, Senyo K, Sevior ME, Shapkin M, Shebalin V, Shen CP, Shibata TA, Shiu JG, Simon F, Smerkol P, Sohn YS, Sokolov A, Solovieva E, Starič M, Sumihama M, Tanaka S, Tatishvili G, Teramoto Y, Trabelsi K, Uchida M, Uglov T, Unno Y, Uno S, Varner G, Wang CH, Wang MZ, Wang P, Watanabe Y, Williams KM, Won E, Yamaoka J, Yamashita Y, Yusa Y, Zhilich V, Zupanc A. Evidence for direct CP violation in B±→ηh± and observation of B0→ηK0. PHYSICAL REVIEW LETTERS 2012; 108:031801. [PMID: 22400727 DOI: 10.1103/physrevlett.108.031801] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2011] [Indexed: 05/31/2023]
Abstract
We report measurements of the branching fractions and CP asymmetries for B(±)→ηh(±) (h=K or π) and the observation of the decay B(0)→ηK(0) from the final data sample of 772×10(6) B ̅B pairs collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. The measured branching fractions are B(B(±)→ηK(±))=(2.12±0.23±0.11)×10(-6), B(B(±)→ηπ(±))=(4.07±0.26±0.21)×10(-6), and B(B(0)→ηK(0))=(1.27(-0.29)(+0.33)±0.08)×10(-6), where the last decay is observed for the first time with a significance of 5.4 standard deviations (σ). We also find evidence for CP violation in the charged B modes, A(CP)(B(±)→ηK(±))=-0.38±0.11±0.01 and A(CP)(B(±)→ηπ(±))=-0.19±0.06±0.01 with significances of 3.8 σ and 3.0 σ, respectively. For all measurements, the first and second uncertainties are statistical and systematic, respectively.
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Adachi I, Aihara H, Arinstein K, Asner DM, Aushev T, Aziz T, Bakich AM, Barberio E, Belous K, Bhardwaj V, Bhuyan B, Bondar A, Bračko M, Brodzicka J, Browder TE, Chang P, Chen A, Chen P, Cheon BG, Chilikin K, Chistov R, Cho IS, Cho K, Choi Y, Dalseno J, Danilov M, Drásal Z, Drutskoy A, Eidelman S, Epifanov D, Esen S, Fast JE, Feindt M, Gaur V, Gabyshev N, Garmash A, Goh YM, Golob B, Hara T, Hayasaka K, Hayashii H, Hoshi Y, Hou WS, Hsiung YB, Hyun HJ, Iijima T, Ishikawa A, Iwabuchi M, Iwasaki Y, Jaegle I, Julius T, Kang JH, Katayama N, Kawasaki T, Kichimi H, Kim HO, Kim JB, Kim KT, Kim MJ, Kim YJ, Kinoshita K, Ko BR, Kobayashi N, Koblitz S, Korpar S, Križan P, Kuhr T, Kumita T, Kuzmin A, Kwon YJ, Lange JS, Lee SH, Li J, Libby J, Liu C, Liventsev D, Louvot R, MacNaughton J, Matvienko D, McOnie S, Miyabayashi K, Miyata H, Miyazaki Y, Mizuk R, Mohanty GB, Mussa R, Nagasaka Y, Nakano E, Nakao M, Nakazawa H, Natkaniec Z, Neubauer S, Nishida S, Nishimura K, Nitoh O, Nozaki T, Ohshima T, Okuno S, Olsen SL, Onuki Y, Pakhlov P, Pakhlova G, Park H, Pedlar TK, Pestotnik R, Petrič M, Piilonen LE, Poluektov A, Ritter M, Röhrken M, Ryu S, Sahoo H, Sakai Y, Sanuki T, Schneider O, Schwanda C, Schwartz AJ, Senyo K, Seon O, Sevior ME, Shapkin M, Shebalin V, Shibata TA, Shiu JG, Shwartz B, Simon F, Smerkol P, Sohn YS, Sokolov A, Solovieva E, Stanič S, Starič M, Sumihama M, Tatishvili G, Teramoto Y, Tikhomirov I, Trabelsi K, Uchida M, Uehara S, Uglov T, Unno Y, Uno S, Vahsen SE, Varner G, Varvell KE, Vinokurova A, Wang CH, Wang XL, Watanabe Y, Wicht J, Won E, Yabsley BD, Yamashita Y, Yuan CZ, Zhilich V, Zupanc A. First observation of the P-wave spin-singlet bottomonium states hb(1P) and hb(2P). PHYSICAL REVIEW LETTERS 2012; 108:032001. [PMID: 22400728 DOI: 10.1103/physrevlett.108.032001] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2011] [Indexed: 05/31/2023]
Abstract
We report the first observations of the spin-singlet bottomonium states h(b)(1P) and h(b)(2P). The states are produced in the reaction e(+)e(-)→h(b)(nP)π(+)π(-) using a 121.4 fb(-1) data sample collected at energies near the Υ(5S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We determine M[h(b)(1P)]=(9898.2(-1.0-1.1)(+1.1+1.0)) MeV/c(2) and M[h(b)(2P)]=(10,259.8±0.6(-1.0)(+1.4)) MeV/c(2), which correspond to P-wave hyperfine splittings ΔM(HF)=(+1.7±1.5) and (+0.5(-1.2)(+1.6)) MeV/c(2), respectively. The significances of the h(b)(1P) and h(b)(2P) are 5.5σ and 11.2σ, respectively. We find that the production of the h(b)(1P) and h(b)(2P) is not suppressed relative to the production of the Υ(1S), Υ(2S), and Υ(3S).
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Won E, Ko BR, Adachi I, Aihara H, Arinstein K, Asner DM, Aushev T, Bakich AM, Barberio E, Bay A, Bhardwaj V, Bhuyan B, Bischofberger M, Bondar A, Bozek A, Bračko M, Brodzicka J, Browder TE, Chang P, Chen A, Chen P, Cheon BG, Chilikin K, Cho IS, Cho K, Choi SK, Choi Y, Dalseno J, Danilov M, Doležal Z, Drásal Z, Drutskoy A, Eidelman S, Fast JE, Gaur V, Gabyshev N, Garmash A, Goh YM, Golob B, 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, Joshi NJ, Julius T, Kang JH, Katayama N, Kawasaki T, Kichimi H, Kim HJ, Kim HO, Kim JB, Kim JH, Kim KT, Kim MJ, Kim SK, Kim YJ, Kinoshita K, Kobayashi N, Koblitz S, Kodyš P, Korpar S, Križan P, Kumita T, Kuzmin A, Kwon YJ, Lange JS, Lee MJ, Lee SH, Li J, Li Y, Libby J, Lim CL, Liu C, Liu Y, Liventsev D, Louvot R, McOnie S, Miyabayashi K, Miyata H, Miyazaki Y, Mizuk R, Mohanty GB, Nagasaka Y, Nakano E, Nakao M, Nakazawa H, Natkaniec Z, Neubauer S, Nishida S, Nishimura K, Nitoh O, Ogawa S, Ohshima T, Okuno S, Olsen SL, Onuki Y, Pakhlov P, Pakhlova G, Park H, Park HK, Park KS, Pestotnik R, Petrič M, Piilonen LE, Röhrken M, Ryu S, Sahoo H, Sakai K, Sakai Y, Sanuki T, Schneider O, Schwanda C, Schwartz AJ, Senyo K, Seon O, Sevior ME, Shen CP, Shibata TA, Shiu JG, Simon F, Singh JB, Smerkol P, Sohn YS, Sokolov A, Solovieva E, Stanič S, Starič M, Sumihama M, Sumiyoshi T, Suzuki S, Tatishvili G, Teramoto Y, Trabelsi K, Uchida M, Uehara S, Uglov T, Unno Y, Uno S, Usov Y, Vahsen SE, Varner G, Vinokurova A, Wang CH, Wang MZ, Wang P, Watanabe M, Watanabe Y, Williams KM, Yabsley BD, Yamashita Y, Yamauchi M, Zhang ZP, Zhilich V, Zhulanov V, Zupanc A, Zyukova O. Observation of D+ → K(+)η(') and search for CP violation in D+ → π(+)η(') decays. PHYSICAL REVIEW LETTERS 2011; 107:221801. [PMID: 22182020 DOI: 10.1103/physrevlett.107.221801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2011] [Indexed: 05/31/2023]
Abstract
We report the first observation of the doubly Cabibbo-suppressed decays D(+)→K(+)η((')) using a 791 fb(-1) data sample collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. The ratio of the branching fractions of doubly Cabibbo-suppressed relative to singly Cabibbo-suppressed D(+)→π(+)η((')) decays are B(D(+)→K(+)η)/B(D(+)→π(+)η)=(3.06±0.43±0.14)% and B(D(+)→K(+)η')/B(D(+)→π(+)η')=(3.77±0.39±0.10)%. From these, we find that the relative final-state phase difference between the tree and annihilation amplitudes in D(+) decays, δ(TA), is (72±9)° or (288±9)°. We also report the most precise measurements of CP asymmetries to date: A(CP)(D(+)→π(+)η)=(+1.74±1.13±0.19)% and A(CP)(D(+)→π(+)η')=(-0.12±1.12±0.17)%.
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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(-). PHYSICAL REVIEW LETTERS 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] [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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Ko BR, Won E, Arinstein K, Aushev T, Bakich AM, Balagura V, Barberio E, Belous K, Bhardwaj V, Bhuyan B, Bischofberger M, Bondar A, Bozek A, Bračko M, Brodzicka J, Browder TE, Chen A, Chen P, Cheon BG, Chiang CC, Cho IS, Cho K, Choi KS, Choi SK, Choi Y, Eidelman S, Epifanov D, Feindt M, Gabyshev N, Garmash A, Golob B, Ha H, Haba J, Hayashii H, Horii Y, Hoshi Y, Hou WS, Hyun HJ, Iijima T, Inami K, Ishikawa A, Itoh R, Iwabuchi M, Iwashita T, Julius T, Kang JH, Kawasaki T, Kiesling C, Kim HO, Kim MJ, Kim YJ, Kinoshita K, Kodyš P, Korpar S, Križan P, Kumar R, Kuzmin A, Kwon YJ, Kyeong SH, Lee MJ, Lee SH, Liu C, Liventsev D, Louvot R, Matyja A, Miyabayashi K, Miyata H, Miyazaki Y, Mizuk R, Mohanty GB, Mori T, Nakano E, Nakao M, Nishida S, Nishimura K, Nitoh O, Ogawa S, Ohshima T, Okuno S, Olsen SL, Pakhlov P, Park CW, Park H, Park HK, Pestotnik R, Petrič M, Piilonen LE, Poluektov A, Röhrken M, Sakai Y, Schneider O, Schwanda C, Schwartz AJ, Senyo K, Sevior ME, Shapkin M, Shebalin V, Shen CP, Shiu JG, Shwartz B, Simon F, Singh JB, Smerkol P, Sohn YS, Solovieva E, Stanič S, Starič M, Sumihama M, Sumisawa K, Sumiyoshi T, Tanaka S, Teramoto Y, Trabelsi K, Uchida M, Uehara S, Uglov T, Unno Y, Usov Y, Varner G, Varvell KE, Vinokurova A, Wang CH, Wang MZ, Watanabe Y, Yamashita Y, Yamauchi M, Zhang ZP, Zhilich V, Zhulanov V, Zupanc A, Zyukova O. Search for CP violation in the decays D(0)→K(S)(0)P(0). PHYSICAL REVIEW LETTERS 2011; 106:211801. [PMID: 21699287 DOI: 10.1103/physrevlett.106.211801] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2011] [Indexed: 05/31/2023]
Abstract
We have searched for CP violation in the decays D(0)→K(S)(0)P(0) where P(0) denotes a neutral pseudoscalar meson that is either a π(0), η, or η' using KEKB asymmetric-energy e(+)e(-) collision data corresponding to an integrated luminosity of 791 fb(-1) collected with the Belle detector. No evidence of significant CP violation is observed. We report the most precise CP asymmetry measurement in the decay D(0)→K(S)(0)π(0) to date: A(CP)(D(0)→K(S)(0)π(0))=(-0.28±0.19±0.10)%. We also report the first measurements of CP asymmetries in the decays D(0)→K(S)(0)η and D(0)→K(S)(0)η': A(CP)(D(0)→K(S)(0)η)=(+0.54±0.51±0.16)% and A(CP)(D(0)→K(S)(0)η')=(+0.98±0.67±0.14)%, respectively.
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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). PHYSICAL REVIEW LETTERS 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] [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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