Search for pair production of scalar top quarks in R-parity violating decay modes in p(p)over-bar collisions at √s=1.8 TeV -: art. no. 051803

被引:18
作者
Acosta, D [1 ]
Affolder, T
Akimoto, H
Albrow, MG
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
Badgett, W
Bailey, S
de Barbaro, P
Barbaro-Galtieri, A
Barnes, VE
Barnett, BA
Baroiant, S
Barone, M
Bauer, G
Bedeschi, F
Behari, S
Belforte, S
Bell, WH
Bellettini, G
Bellinger, J
Benjamin, D
Bensinger, J
Beretvas, A
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
Bolshov, A
Bonushkin, Y
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 Calif Santa Barbara, Santa Barbara, CA 93106 USA
[9] Univ Cantabria, CSIC, Inst Fis Cantabria, E-39005 Santander, Spain
[10] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA
[11] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA
[12] Joint Inst Nucl Res, RU-141980 Dubna, Russia
[13] Duke Univ, Durham, NC 27708 USA
[14] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA
[15] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy
[16] Univ Geneva, CH-1211 Geneva 4, Switzerland
[17] Univ Glasgow, Glasgow G12 8QQ, Lanark, Scotland
[18] Harvard Univ, Cambridge, MA 02138 USA
[19] Hiroshima Univ, Higashihiroshima 724, Japan
[20] Univ Illinois, Urbana, IL 61801 USA
[21] Johns Hopkins Univ, Baltimore, MD 21218 USA
[22] Univ Karlsruhe, Inst Expt Kernphys, D-76128 Karlsruhe, Germany
[23] High Energy Accelerator Res Org, Tsukuba, Ibaraki 305, Japan
[24] Kyungpook Natl Univ, Ctr High Energy Phys, Taegu 702701, South Korea
[25] Seoul Natl Univ, Seoul 151742, South Korea
[26] Sungkyunkwan Univ, Suwon 440746, South Korea
[27] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA
[28] UCL, London WC1E 6BT, England
[29] MIT, Cambridge, MA 02139 USA
[30] Univ Michigan, Ann Arbor, MI 48109 USA
[31] Michigan State Univ, E Lansing, MI 48824 USA
[32] Inst Theoret & Expt Phys, Moscow 117259, Russia
[33] Univ New Mexico, Albuquerque, NM 87131 USA
[34] Northwestern Univ, Evanston, IL 60208 USA
[35] Ohio State Univ, Columbus, OH 43210 USA
[36] Osaka City Univ, Osaka 588, Japan
[37] Univ Oxford, Oxford OX1 3RH, England
[38] Univ Padua, Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy
[39] Univ Penn, Philadelphia, PA 19104 USA
[40] Univ Pisa, Ist Nazl Fis Nucl, I-56100 Pisa, Italy
[41] Scuola Normale Super Pisa, I-56100 Pisa, Italy
[42] Univ Pittsburgh, Pittsburgh, PA 15260 USA
[43] Purdue Univ, W Lafayette, IN 47907 USA
[44] Univ Rochester, Rochester, NY 14627 USA
[45] Rockefeller Univ, New York, NY 10021 USA
[46] Univ Roma La Sapienza 1, Ist Nazl Fis Nucl, Sez Roma, I-00185 Rome, Italy
[47] Rutgers State Univ, Piscataway, NJ 08855 USA
[48] Texas A&M Univ, College Stn, TX 77843 USA
[49] Texas Tech Univ, Lubbock, TX 79409 USA
[50] Univ Toronto, Inst Particle Phys, Toronto, ON M5S 1A7, Canada
关键词
D O I
10.1103/PhysRevLett.92.051803
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We present the results of a search for pair production of scalar top quarks ((t) over tilde (1)) in an R-parity violating supersymmetry scenario in 106 pb(-1) of p (p) over bar collisions at roots=1.8 TeV collected by the Collider Detector at Fermilab. In this mode each (t) over tilde (1) decays into a tau lepton and a b quark. We search for events with two tau's, one decaying leptonically (e or mu) and one decaying hadronically, and two jets. No candidate events pass our final selection criteria. We set a 95% confidence level lower limit on the (t) over tilde (1) mass at 122 GeV/c(2) for Br((t) over tilde (1)-->taub)=1.
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页数:7
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