Study of the heavy flavor content of jets produced in association with W bosons in p(p)over-bar collisions at √s=1.8 TeV -: art. no. 052007

被引:23
作者
Acosta, D [1 ]
Affolder, T
Akimoto, H
Akopian, A
Amaral, P
Ambrose, D
Amidei, D
Anikeev, K
Antos, J
Apollinari, G
Arisawa, T
Artikov, A
Asakawa, T
Ashmanskas, W
Azfar, F
Azzi-Bacchetta, P
Bacchetta, N
Bachacou, H
Bailey, S
de Barbaro, P
Barbaro-Galtieri, A
Barnes, VE
Barnett, BA
Baroiant, S
Barone, M
Bauer, G
Bedeschi, F
Belforte, S
Bell, WH
Bellettini, G
Bellinger, J
Benjamin, D
Bensinger, J
Beretvas, A
Berge, JP
Berryhill, J
Bhatti, A
Binkley, M
Bisello, D
Bishai, M
Blair, RE
Blocker, C
Bloom, K
Blumenfeld, B
Blusk, SR
Bocci, A
Bodek, A
Bolla, G
Bonushkin, Y
Bortoletto, D
机构
[1] Univ Florida, Gainesville, FL 32611 USA
[2] Acad Sinica, Inst Phys, Taipei 11529, Taiwan
[3] Argonne Natl Lab, Argonne, IL 60439 USA
[4] Univ Bologna, Ist Nazl Fis Nucl, I-40127 Bologna, Italy
[5] Brandeis Univ, Waltham, MA 02254 USA
[6] Univ Calif Davis, Davis, CA 95616 USA
[7] Univ Calif Los Angeles, Los Angeles, CA 90024 USA
[8] Univ Cantabria, CSIC, Inst Fis Cantabria, E-39005 Santander, Spain
[9] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA
[10] Joint Nucl Res Inst, RU-141980 Dubna, Russia
[11] Duke Univ, Durham, NC 27708 USA
[12] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA
[13] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy
[14] Univ Geneva, CH-1211 Geneva 4, Switzerland
[15] Univ Glasgow, Glasgow G12 8QQ, Lanark, Scotland
[16] Harvard Univ, Cambridge, MA 02138 USA
[17] Hiroshima Univ, Higashihiroshima 724, Japan
[18] Univ Illinois, Urbana, IL 61801 USA
[19] Johns Hopkins Univ, Baltimore, MD 21218 USA
[20] Univ Karlsruhe, Inst Expt Kernphys, D-76128 Karlsruhe, Germany
[21] Kyungpook Natl Univ, Ctr High Energy Phys, Taegu 702701, South Korea
[22] Seoul Natl Univ, Seoul 151742, South Korea
[23] Sungkyunkwan Univ, Suwon 440746, South Korea
[24] KEK, High Energy Accelerator Res Org, Tsukuba, Ibaraki 305, Japan
[25] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA
[26] MIT, Cambridge, MA 02139 USA
[27] Univ Michigan, Ann Arbor, MI 48109 USA
[28] Michigan State Univ, E Lansing, MI 48824 USA
[29] Univ New Mexico, Albuquerque, NM 87131 USA
[30] Osaka City Univ, Osaka 588, Japan
[31] Univ Oxford, Oxford OX1 3RH, England
[32] Univ Padua, Ist Nazl Fis Nucl, I-35131 Padua, Italy
[33] Univ Penn, Philadelphia, PA 19104 USA
[34] Univ Pisa, Ist Nazl Fis Nucl, I-56100 Pisa, Italy
[35] Scuola Normale Super Pisa, I-56100 Pisa, Italy
[36] Univ Pittsburgh, Pittsburgh, PA 15260 USA
[37] Purdue Univ, W Lafayette, IN 47907 USA
[38] Univ Rochester, Rochester, NY 14627 USA
[39] Rockefeller Univ, New York, NY 10021 USA
[40] Rutgers State Univ, Piscataway, NJ 08855 USA
[41] Texas A&M Univ, College Stn, TX 77843 USA
[42] Texas Tech Univ, Lubbock, TX 79409 USA
[43] Univ Toronto, Inst Particle Phys, Toronto, ON M5S 1A7, Canada
[44] Univ Trieste Udine, Ist Nazl Fis Nucl, Udine, Italy
[45] Univ Tsukuba, Tsukuba, Ibaraki 305, Japan
[46] Tufts Univ, Medford, MA 02155 USA
[47] Waseda Univ, Tokyo 169, Japan
[48] Univ Wisconsin, Madison, WI 53706 USA
[49] Yale Univ, New Haven, CT 06520 USA
关键词
D O I
10.1103/PhysRevD.65.052007
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We present a detailed examination of the heavy flavor content of the W+jet data sample collected with the Collider Detector at Fermilab during the 1992-1995 collider run at the Fermilab Tevatron. Jets containing heavy flavor quarks are selected via the identification of secondary vertices or semileptonic decays of b and c quarks. There is generally good agreement between the rates of secondary vertices and soft leptons in the data and in the standard model simulation including single and pair production of top quarks. An exception is the number of events in which a single jet has both a soft lepton and a secondary vertex tag. In W+2,3 jet data, we find 13 such events where we expected 4.4+/-0.6 events. The kinematic properties of this small sample of events are statistically difficult to reconcile with the simulation of standard model processes.
引用
收藏
页码:052007 / 1
页数:26
相关论文
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