Search for Supersymmetry in p (p)over-bar Collisions at √s=1.96 TeV Using the Trilepton Signature for Chargino-Neutralino Production

被引：51

作者：

Aaltonen, T. ^{[1
,2
]}

Adelman, J. ^{[17
]}

Akimoto, T. ^{[70
]}

Albrow, M. G. ^{[22
]}

Alvarez Gonzalez, B. ^{[15
]}

Amerio, S. ^{[52
,53
]}

Amidei, D. ^{[43
]}

Anastassov, A. ^{[47
]}

Annovi, A. ^{[24
]}

Antos, J. ^{[18
,19
]}

Apollinari, G. ^{[22
]}

Apresyan, A. ^{[61
]}

Arisawa, T. ^{[72
]}

Artikov, A. ^{[20
]}

Ashmanskas, W. ^{[22
]}

Attal, A. ^{[6
]}

Aurisano, A. ^{[67
]}

Azfar, F. ^{[51
]}

Azzurri, P. ^{[56
,59
]}

Badgett, W. ^{[22
]}

Barbaro-Galtieri, A. ^{[36
]}

Barnes, V. E. ^{[61
]}

Barnett, B. A. ^{[29
]}

Bartsch, V. ^{[38
]}

Bauer, G. ^{[40
]}

Beauchemin, P. -H. ^{[41
,42
]}

Bedeschi, F. ^{[56
]}

Bednar, P. ^{[18
,19
]}

Beecher, D. ^{[38
]}

Behari, S. ^{[29
]}

Bellettini, G. ^{[56
,57
]}

Bellinger, J. ^{[74
]}

Benjamin, D. ^{[21
]}

Beretvas, A. ^{[22
]}

Beringer, J. ^{[36
]}

Bhatti, A. ^{[63
]}

Binkley, M. ^{[22
]}

Bisello, D. ^{[52
,53
]}

Bizjak, I. ^{[38
]}

Blair, R. E. ^{[4
]}

Blocker, C. ^{[10
]}

Blumenfeld, B. ^{[29
]}

Bocci, A. ^{[21
]}

Bodek, A. ^{[62
]}

Boisvert, V. ^{[62
]}

Bolla, G. ^{[61
]}

Bortoletto, D. ^{[61
]}

Boudreau, J. ^{[60
]}

Boveia, A. ^{[14
]}

Brau, B. ^{[14
]}

机构：

[1] Univ Helsinki, Dept Phys, Div High Energy Phys, FIN-00014 Helsinki, Finland

[2] Helsinki Inst Phys, FIN-00014 Helsinki, Finland

[3] Acad Sinica, Inst Phys, Taipei 11529, Taiwan

[4] Argonne Natl Lab, Argonne, IL 60439 USA

[5] Univ Athens, GR-15771 Athens, Greece

[6] Univ Autonoma Barcelona, Inst Fis Altes Energies, E-08193 Barcelona, Spain

[7] Baylor Univ, Waco, TX 76798 USA

[8] Ist Nazl Fis Nucl Bologna, I-40127 Bologna, Italy

[9] Univ Bologna, I-40127 Bologna, Italy

[10] Brandeis Univ, Waltham, MA 02254 USA

[11] Univ Calif Davis, Davis, CA 95616 USA

[12] Univ Calif Los Angeles, Los Angeles, CA 90024 USA

[13] Univ Calif San Diego, La Jolla, CA 92093 USA

[14] Univ Calif Santa Barbara, Santa Barbara, CA 93106 USA

[15] Univ Cantabria, CSIC, Inst Fis Cantabria, E-39005 Santander, Spain

[16] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA

[17] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA

[18] Inst Expt Phys, Kosice 04001, Slovakia

[19] Comenius Univ, Bratislava 84248, Slovakia

[20] Joint Inst Nucl Res, RU-141980 Dubna, Russia

[21] Duke Univ, Durham, NC 27708 USA

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

[23] Univ Florida, Gainesville, FL 32611 USA

[24] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy

[25] Univ Geneva, CH-1211 Geneva 4, Switzerland

[26] Univ Glasgow, Glasgow G12 8QQ, Lanark, Scotland

[27] Harvard Univ, Cambridge, MA 02138 USA

[28] Univ Illinois, Urbana, IL 61801 USA

[29] Johns Hopkins Univ, Baltimore, MD 21218 USA

[30] Univ Karlsruhe, Inst Expt Kernphys, D-76128 Karlsruhe, Germany

[31] Kyungpook Natl Univ, Ctr High Energy Phys, Taegu 702701, South Korea

[32] Seoul Natl Univ, Seoul 151742, South Korea

[33] Sungkyunkwan Univ, Suwon 440746, South Korea

[34] Korea Inst Sci & Technol Informat, Taejon 305806, South Korea

[35] Chonnam Natl Univ, Kwangju 500757, South Korea

[36] Ernest Orlando Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA

[37] Univ Liverpool, Liverpool L69 7ZE, Merseyside, England

[38] UCL, London WC1E 6BT, England

[39] Ctr Invest Energet Medioambientales & Tecnol, E-28040 Madrid, Spain

[40] MIT, Cambridge, MA 02139 USA

[41] McGill Univ, Inst Particle Phys, Montreal, PQ H3A 2T8, Canada

[42] Univ Toronto, Toronto, ON M5S 1A7, Canada

[43] Univ Michigan, Ann Arbor, MI 48109 USA

[44] Michigan State Univ, E Lansing, MI 48824 USA

[45] ITEP, Inst Theoret & Expt Phys, Moscow 117259, Russia

[46] Univ New Mexico, Albuquerque, NM 87131 USA

[47] Northwestern Univ, Evanston, IL 60208 USA

[48] Ohio State Univ, Columbus, OH 43210 USA

[49] Okayama Univ, Okayama 7008530, Japan

[50] Osaka City Univ, Osaka 588, Japan

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 101卷 / 25期

基金：

英国科学技术设施理事会; 美国国家科学基金会; 俄罗斯基础研究基金会; 加拿大自然科学与工程研究理事会; 瑞士国家科学基金会; 芬兰科学院;

关键词：

D O I：

10.1103/PhysRevLett.101.251801

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We use the three lepton and missing energy trilepton signature to search for chargino-neutralino production with 2.0 fb(-1) of integrated luminosity collected by the CDF II experiment at the Tevatron p (p) over bar collider. We expect an excess of approximately 11 supersymmetric events for a choice of parameters of the mSUGRA model, but our observation of 7 events is consistent with the standard model expectation of 6.4 events. We constrain the mSUGRA model of supersymmetry and rule out chargino masses up to 145 GeV/c(2) for a specific choice of parameters.

引用

页数：7

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