Observation of the Y (4140) structure in the J/ψφ mass spectrum in B± → J/ψφK± decays

被引:62
作者
Aaltonen, T. [22 ,23 ]
Alvarez Gonzalez, B. [9 ,98 ]
Amerio, S. [51 ]
Amidei, D. [42 ]
Anastassov, A. [46 ]
Annovi, A. [18 ]
Antos, J. [12 ,13 ]
Apollinari, G. [16 ]
Appel, J. A. [16 ]
Apresyan, A. [56 ]
Arisawa, T. [66 ]
Artikov, A. [14 ]
Asaadi, J. [61 ]
Ashmanskas, W. [16 ]
Auerbach, B. [69 ]
Aurisano, A. [61 ]
Azfar, F. [50 ]
Badgett, W. [16 ]
Barbaro-Galtieri, A. [33 ]
Barnes, V. E. [56 ]
Barnett, B. A. [25 ]
Barria, P. [54 ,73 ]
Bartos, P. [12 ,13 ]
Bauce, M. [51 ,71 ]
Bauer, G. [37 ]
Bedeschi, F. [54 ]
Beecher, D. [35 ]
Behari, S. [25 ]
Bellettini, G. [54 ,72 ]
Bellinger, J. [68 ]
Benjamin, D. [15 ]
Beretvas, A. [16 ]
Bhatti, A. [58 ]
Binkley, M. [16 ]
Bisello, D. [51 ,71 ]
Bizjak, I. [35 ]
Bland, K. R. [5 ]
Blumenfeld, B. [25 ]
Bocci, A. [15 ]
Bodek, A. [57 ]
Bortoletto, D. [56 ]
Boudreau, J. [55 ]
Boveia, A. [11 ]
Brau, B. [16 ,77 ]
Brigliadori, L. [6 ,70 ]
Brisuda, A. [12 ,13 ]
Bromberg, C. [43 ]
Brucken, E. [22 ,23 ]
Bucciantonio, M. [54 ,72 ]
Budagov, J. [14 ]
机构
[1] Acad Sinica, Inst Phys, Taipei 11529, Taiwan
[2] Argonne Natl Lab, Argonne, IL 60439 USA
[3] Univ Athens, Athens 15771, Greece
[4] Univ Autonoma Barcelona, ICREA, Inst Fis Altes Energies, E-08193 Bellaterra E08193, Spain
[5] Baylor Univ, Waco, TX 76798 USA
[6] Ist Nazl Fis Nucl, Bologna, Italy
[7] Univ Calif Davis, Davis, CA 95616 USA
[8] Univ Calif Los Angeles, Los Angeles, CA 90024 USA
[9] Univ Cantabria, CSIC, Inst Fis Cantabria, Santander 39005, Spain
[10] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA
[11] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA
[12] Comenius Univ, Bratislava 84248, Slovakia
[13] Inst Expt Phys, Kosice 04001, Slovakia
[14] Joint Inst Nucl Res, RU-141980 Dubna, Russia
[15] Duke Univ, Durham, NC 27708 USA
[16] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA
[17] Univ Florida, Gainesville, FL 32611 USA
[18] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy
[19] Univ Geneva, CH-1211 Geneva, Switzerland
[20] Univ Glasgow, Glasgow G12 8QQ, Lanark, Scotland
[21] Harvard Univ, Cambridge, MA 02138 USA
[22] Univ Helsinki, Dept Phys, Div High Energy Phys, FIN-00014 Helsinki, Finland
[23] Helsinki Inst Phys, FIN-00014 Helsinki, Finland
[24] Univ Illinois, Urbana, IL 61801 USA
[25] Johns Hopkins Univ, Baltimore, MD 21218 USA
[26] Karlsruhe Inst Technol, Inst Expt Kernphys, D-76131 Karlsruhe, Germany
[27] Kyungpook Natl Univ, Ctr High Energy Phys, Daegu 702701, South Korea
[28] Natl Univ, Seoul 151742, South Korea
[29] Sungkyunkwan Univ, Suwon 440746, South Korea
[30] Korea Inst Sci & Technol Informat, Daejeon 305806, South Korea
[31] Chonnam Natl Univ, Gwangju 500757, South Korea
[32] Chonbuk Natl Univ, Jeonju 561756, South Korea
[33] Ernest Orlando Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA
[34] Univ Liverpool, Liverpool L69 7ZE, Merseyside, England
[35] UCL, London WC1E 6BT, England
[36] Ctr Invest Energet Medioambientales & Tecnol, E-28040 Madrid, Spain
[37] MIT, Cambridge, MA 02139 USA
[38] McGill Univ, Inst Particle Phys, Quebec City, PQ H3A 2T8, Canada
[39] Simon Fraser Univ, Burnaby, BC V5A IS6, Canada
[40] Univ Toronto, Toronto, ON M5S IA7, Canada
[41] TRIUMF, Vancouver, BC V6T 2A3, Canada
[42] Univ Michigan, Ann Arbor, MI 48109 USA
[43] Michigan State Univ, E Lansing, MI 48824 USA
[44] Inst Theoret & Expt Phys, Moscow 117259, Russia
[45] Univ New Mexico, Albuquerque, NM 87131 USA
[46] Northwestern Univ, Evanston, IL 60208 USA
[47] Ohio State Univ, Columbus, OH 43210 USA
[48] Okayama Univ, Okayama 7008530, Japan
[49] Osaka City Univ, Osaka 588, Japan
[50] Univ Oxford, Oxford OX1 3RH, England
基金
加拿大自然科学与工程研究理事会; 俄罗斯基础研究基金会; 芬兰科学院; 英国科学技术设施理事会; 瑞士国家科学基金会; 美国国家科学基金会;
关键词
MESONS;
D O I
10.1142/S0217732317501395
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
The observation of the Y ( 4140) structure in B-+/- -> J/psi phi K-+/- decays produced in (p) over barp collisions at root s = 1.96 TeV is reported with a statistical significance greater than 5 standard deviations. A fit to the J/psi phi mass spectrum is performed assuming the presence of a Breit-Wigner resonance. The fit yields a signal of 19 +/- 6 (stat) +/- 3 (syst) resonance events, and resonance mass and width of 4143.4(-3.0)(+2.9) ( stat) +/- 0.6 (syst) MeV/c(2) and 15.3(-6.1)(+10.4) (stat) +/- 2.5 (syst) MeV/c(2), respectively. The parameters of this resonance-like structure are consistent with values reported from an earlier CDF analysis.
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页数:11
相关论文
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