Measurement of the Lifetime of the Bc± Meson in the Semileptonic Decay Channel

被引：49

作者：

Abazov, V. M. ^{[36
]}

Abbott, B. ^{[72
]}

Abolins, M. ^{[62
]}

Acharya, B. S. ^{[29
]}

Adams, M. ^{[48
]}

Adams, T. ^{[46
]}

Aguilo, E. ^{[6
,80
,81
,82
]}

Ahn, S. H. ^{[31
]}

Ahsan, M. ^{[56
]}

Alexeev, G. D. ^{[36
]}

Alkhazov, G. ^{[40
]}

Alton, A. ^{[61
]}

Alverson, G. ^{[60
]}

Alves, G. A. ^{[2
]}

Anastasoaie, M. ^{[35
]}

Ancu, L. S. ^{[35
]}

Andeen, T. ^{[50
]}

Anderson, S. ^{[42
]}

Andrieu, B. ^{[17
,83
]}

Anzelc, M. S. ^{[50
]}

Aoki, M. ^{[47
]}

Arnoud, Y. ^{[14
]}

Arov, M. ^{[57
]}

Arthaud, M. ^{[18
]}

Askew, A. ^{[46
]}

Asman, B. ^{[41
,87
,88
,89
]}

Assis Jesus, A. C. S. ^{[3
]}

Atramentov, O. ^{[46
]}

Avila, C. ^{[8
]}

Badaud, F. ^{[13
]}

Baden, A. ^{[58
]}

Bagby, L. ^{[47
]}

Baldin, B. ^{[47
]}

Bandurin, D. V. ^{[56
]}

Banerjee, P. ^{[29
]}

Banerjee, S. ^{[29
]}

Barberis, E. ^{[60
]}

Barfuss, A. -F. ^{[15
]}

Bargassa, P. ^{[77
]}

Baringer, P. ^{[55
]}

Barreto, J. ^{[2
]}

Bartlett, J. F. ^{[47
]}

Bassler, U. ^{[18
]}

Bauer, D. ^{[91
]}

Beale, S. ^{[6
,80
,81
,82
]}

Bean, A. ^{[55
]}

Begalli, M. ^{[3
]}

Begel, M. ^{[70
]}

Belanger-Champagne, C. ^{[41
,87
,88
,89
]}

Bellantoni, L. ^{[47
]}

机构：

[1] Univ Buenos Aires, Buenos Aires, DF, Argentina

[2] Ctr Brasileiro Pesquisas Fis, LAFEX, Rio De Janeiro, Brazil

[3] Univ Estado Rio de Janeiro, BR-20550011 Rio De Janeiro, Brazil

[4] Univ Fed ABC, Santo Andre, Brazil

[5] Univ Estadual Paulista, Inst Fis Teor, BR-01405 Sao Paulo, Brazil

[6] Univ Alberta, Edmonton, AB, Canada

[7] Univ Sci & Technol China, Hefei 230026, Peoples R China

[8] Univ Los Andes, Bogota, Colombia

[9] Charles Univ Prague, Ctr Particle Phys, Prague, Czech Republic

[10] Czech Tech Univ, CR-16635 Prague, Czech Republic

[11] Acad Sci Czech Republ, Inst Phys, Ctr Particle Phys, Prague, Czech Republic

[12] Univ San Francisco, Quito, Ecuador

[13] Univ Blaise Pascal, LPC, CNRS, IN2P3, Clermont, France

[14] Univ Grenoble 1, CNRS, IN2P3, Inst Natl Polytech Grenoble,LPSC, Grenoble, France

[15] Aix Marseille Univ, CPPM, CNRS, IN2P3, Marseille, France

[16] Univ Paris 11, CNRS, LAL, IN2P3, F-91405 Orsay, France

[17] Univ Paris 06, CNRS, LPNHE, IN2P3, Paris, France

[18] CEA, Serv Phys Particules, DAPNIA, Saclay, France

[19] Univ Strasbourg, IPHC, Strasbourg, France

[20] Univ Lyon 1, CNRS, IN2P3, IPNL, F-69622 Villeurbanne, France

[21] Rhein Westfal TH Aachen, Phys Inst A III, Aachen, Germany

[22] Univ Bonn, Inst Phys, D-5300 Bonn, Germany

[23] Univ Freiburg, Inst Phys, Freiburg, Germany

[24] Johannes Gutenberg Univ Mainz, Inst Phys, D-6500 Mainz, Germany

[25] Univ Munich, Munich, Germany

[26] Univ Wuppertal, Fachbereich Phys, Wuppertal, Germany

[27] Panjab Univ, Chandigarh 160014, India

[28] Univ Delhi, Delhi 110007, India

[29] Tata Inst Fundamental Res, Bombay 400005, Maharashtra, India

[30] Univ Coll Dublin, Dublin 2, Ireland

[31] Korea Univ, Korea Detector Lab, Seoul, South Korea

[32] Sungkyunkwan Univ, Suwon, South Korea

[33] CINVESTAV, Mexico City 14000, DF, Mexico

[34] NIKHEF, FOM Inst, Amsterdam, Netherlands

[35] Radboud Univ Nijmegen, NIKHEF, NL-6525 ED Nijmegen, Netherlands

[36] Joint Inst Nucl Res, Dubna, Russia

[37] Inst Theoret & Expt Phys, Moscow 117259, Russia

[38] Moscow MV Lomonosov State Univ, Moscow, Russia

[39] Inst High Energy Phys, Protvino, Russia

[40] Petersburg Nucl Phys Inst, St Petersburg, Russia

[41] Lund Univ, Lund, Sweden

[42] Univ Arizona, Tucson, AZ 85721 USA

[43] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA

[44] Calif State Univ Fresno, Fresno, CA 93740 USA

[45] Univ Calif Riverside, Riverside, CA 92521 USA

[46] Florida State Univ, Tallahassee, FL 32306 USA

[47] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA

[48] Univ Illinois, Chicago, IL 60607 USA

[49] No Illinois Univ, De Kalb, IL 60115 USA

[50] Northwestern Univ, Evanston, IL 60208 USA

来源：

PHYSICAL REVIEW LETTERS | 2009年 / 102卷 / 09期

基金：

美国国家科学基金会; 巴西圣保罗研究基金会; 瑞典研究理事会; 加拿大自然科学与工程研究理事会;

关键词：

D O I：

10.1103/PhysRevLett.102.092001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Using approximately 1.3 fb(-1) of data collected by the D0 detector between 2002 and 2006, we measure the lifetime of the B-c(+/-) meson in the B-c(+/-)-> J/psi mu(+/-)+X final state. A simultaneous unbinned likelihood fit to the J/psi+mu invariant mass and lifetime distributions yields a signal of 881 +/- 80(stat) candidates and a lifetime measurement of tau(B-c(+/-))=0.448(-0.036)(+0.038)(stat)+/- 0.032(syst) ps.

引用

页数：7

共 17 条

[11] Hadronic production of S-wave and P-wave charmed b mesons via heavy quark fragmentation [J].