First Observation of the Decay Bc+→J/ψπ+π-π+

被引:56
|
作者
Aaij, R. [1 ]
Abellan Beteta, C. [36 ,70 ,71 ]
Adeva, B. [37 ]
Adinolfi, M. [44 ]
Adrover, C. [8 ]
Affolder, A. [50 ]
Ajaltouni, Z. [7 ]
Albrecht, J. [38 ]
Alessio, F. [38 ]
Alexander, M. [49 ]
Ali, S. [1 ]
Alkhazov, G. [29 ]
Alvarez Cartelle, P. [37 ]
Alves, A. A., Jr. [24 ]
Amato, S. [4 ]
Amhis, Y. [39 ]
Anderson, J. [40 ]
Appleby, R. B. [52 ]
Gutierrez, O. Aquines [12 ]
Archilli, F. [20 ,38 ]
Artamonov, A. [35 ]
Artuso, M. [38 ,54 ]
Aslanides, E. [8 ]
Auriemma, G. [24 ,69 ]
Bachmann, S. [13 ]
Back, J. J. [46 ]
Balagura, V. [30 ,38 ]
Baldini, W. [18 ]
Barlow, R. J. [52 ]
Barschel, C. [38 ]
Barsuk, S. [9 ]
Barter, W. [45 ]
Bates, A. [49 ]
Bauer, C. [12 ]
Bauer, Th. [1 ]
Bay, A. [39 ]
Bediaga, I. [3 ]
Belogurov, S. [30 ]
Belous, K. [35 ]
Belyaev, I. [30 ]
Ben-Haim, E. [10 ]
Benayoun, M. [10 ]
Bencivenni, G. [20 ]
Benson, S. [48 ]
Benton, J. [44 ]
Bernet, R. [40 ]
Bettler, M. -O. [19 ]
van Beuzekom, M. [1 ]
Bien, A. [13 ]
Bifani, S. [14 ]
机构
[1] Nikhef Natl Inst Subatom Phys, Amsterdam, Netherlands
[2] Vrije Univ Amsterdam, Amsterdam, Netherlands
[3] Ctr Brasileiro Pesquisas Fis, Rio De Janeiro, Brazil
[4] Univ Fed Rio de Janeiro, Rio De Janeiro, Brazil
[5] Tsinghua Univ, Ctr High Energy Phys, Beijing 100084, Peoples R China
[6] Univ Savoie, LAPP, CNRS IN2P3, Annecy Le Vieux, France
[7] Univ Blaise Pascal, Clermont Univ, CNRS IN2P3, LPC, Clermont Ferrand, France
[8] Aix Marseille Univ, CPPM, CNRS IN2P3, Marseille, France
[9] Univ Paris 11, LAL, CNRS IN2P3, Orsay, France
[10] Univ Paris Diderot, Univ Paris 06, LPNHE, CNRS IN2P3, Paris, France
[11] Tech Univ Dortmund, Fak Phys, Dortmund, Germany
[12] Max Planck Inst Kernphys, D-69117 Heidelberg, Germany
[13] Heidelberg Univ, Inst Phys, D-6900 Heidelberg, Germany
[14] Univ Coll Dublin, Sch Phys, Dublin 2, Ireland
[15] Sez INFN Bari, Bari, Italy
[16] Sez INFN Bologna, Bologna, Italy
[17] Sez INFN Cagliari, Cagliari, Italy
[18] Sez INFN Ferrara, Ferrara, Italy
[19] Sez INFN Firenze, Florence, Italy
[20] INFN Frascati, Lab Nazl, Frascati, Italy
[21] Sez INFN Genova, Genoa, Italy
[22] Sez INFN Milano Bicocca, Milan, Italy
[23] Sez INFN Roma Tor Vergata, Rome, Italy
[24] Sez INFN Roma La Sapienza, Rome, Italy
[25] Polish Acad Sci, Henryk Niewodniczanski Inst Nucl Phys, Krakow, Poland
[26] AGH Univ Sci & Technol, Krakow, Poland
[27] Soltan Inst Nucl Studies, PL-00681 Warsaw, Poland
[28] Horia Hulubei Natl Inst Phys & Nucl Engn, Bucharest, Romania
[29] PNPI, Gatchina, Russia
[30] Inst Theoret & Expt Phys, Moscow 117259, Russia
[31] Moscow State Univ SINP MSU, Inst Nucl Phys, Moscow, Russia
[32] Russian Acad Sci INR RAN, Inst Nucl Res, Moscow, Russia
[33] Novosibirsk State Univ, Novosibirsk 630090, Russia
[34] Budker Inst Nucl Phys SB RAS, Novosibirsk, Russia
[35] Inst High Energy Phys, Protvino, Russia
[36] Univ Barcelona, Barcelona, Spain
[37] Univ Santiago de Compostela, Santiago De Compostela, Spain
[38] European Org Nucl Res CERN, Geneva, Switzerland
[39] Ecole Polytech Fed Lausanne, Lausanne, Switzerland
[40] Univ Zurich, Inst Phys, Zurich, Switzerland
[41] NSC KIPT, Kharkov, Ukraine
[42] Natl Acad Sci KINR, Inst Nucl Res, Kiev, Ukraine
[43] Univ Birmingham, Birmingham, W Midlands, England
[44] Univ Bristol, HH Wills Phys Lab, Bristol BS8 1TL, Avon, England
[45] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England
[46] Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England
[47] STFC Rutherford Appleton Lab, Didcot, Oxon, England
[48] Univ Edinburgh, Sch Phys & Astron, Edinburgh, Midlothian, Scotland
[49] Univ Glasgow, Sch Phys & Astron, Glasgow, Lanark, Scotland
[50] Univ Liverpool, Oliver Lodge Lab, Liverpool L69 3BX, Merseyside, England
关键词
B-C MESON; HADRONIC PRODUCTION; GENERATOR;
D O I
10.1103/PhysRevLett.108.251802
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The decay Bc(+) -> J/psi pi(+) pi(-) pi(+) is observed for the first time, using 0.8 fb(-1) of pp collisions at root s = 7 TeV collected by the LHCb experiment. The ratio of branching fractions B(B-c(+) -> J/psi pi(+) pi(-) pi(+))/B(B-c(+) -> J/psi pi(+)) is measured to be 2.41 +/- 0.30 +/- 0.33, where the first uncertainty is statistical and the second is systematic. The result is in agreement with theoretical predictions.
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页数:7
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