Inclusive search for anomalous production of high-pT like-sign lepton pairs in p(p)over-bar collisions at √s=1.8 TeV -: art. no. 061802

被引：9

作者：

Acosta, D ^{[1
]}

Affolder, T

Albrow, MG

Ambrose, D

Amidei, D

Anikeev, K

Antos, J

Apollinari, G

Arisawa, T

Artikov, A

Ashmanskas, W

Azfar, F

Azzi-Bacchetta, P

Bacchetta, N

Bachacou, H

Badgett, W

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

Beretvas, A

Bhatti, A

Binkley, M

Bisello, D

Bishai, M

Blair, RE

Blocker, C

Bloom, K

Blumenfeld, B

Bocci, A

Bodek, A

Bolla, G

Bolshov, A

Bortoletto, D

Boudreau, J

Bromberg, C

Brubaker, E

Budagov, J

Budd, HS

Burkett, K

Busetto, G

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

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

[25] Sungkyunkwan Univ, Suwon 440746, South Korea

[26] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA

[27] UCL, London WC1E 6BT, England

[28] MIT, Cambridge, MA 02139 USA

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

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

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

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

[33] Northwestern Univ, Evanston, IL 60208 USA

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

[35] Osaka City Univ, Osaka 588, Japan

[36] Univ Oxford, Oxford OX1 3RH, England

[37] Univ Padua, Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy

[38] Univ Penn, Philadelphia, PA 19104 USA

[39] Univ Scuola Normale Super Pisa, Ist Nazl Fis Nucl, I-56100 Pisa, Italy

[40] Univ Pittsburgh, Pittsburgh, PA 15260 USA

[41] Purdue Univ, W Lafayette, IN 47907 USA

[42] Univ Rochester, Rochester, NY 14627 USA

[43] Rockefeller Univ, New York, NY 10021 USA

[44] Univ Roma I La Sapienza, Ist Nazl Fis Nucl, Sez Roma, I-00185 Rome, Italy

[45] Rutgers State Univ, Piscataway, NJ 08855 USA

[46] Texas A&M Univ, College Stn, TX 77843 USA

[47] Texas Tech Univ, Lubbock, TX 79409 USA

[48] Univ Toronto, Inst Particle Phys, Toronto, ON M5S 1A7, Canada

[49] Univ Trieste, Ist Nazl Fis Nucl, Udine, Italy

[50] Univ Tsukuba, Tsukuba, Ibaraki 305, Japan

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 93卷 / 06期

基金：

美国国家科学基金会; 新加坡国家研究基金会; 加拿大自然科学与工程研究理事会;

关键词：

D O I：

10.1103/PhysRevLett.93.061802

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report on a search for anomalous production of events with at least two charged, isolated, like-sign leptons, each with p(T)>11 GeV/c using a 107 pb(-1) sample of 1.8 TeV p (p) over bar collisions collected by the CDF detector. We define a signal region containing low background from standard model processes. To avoid bias, we fix the final cuts before examining the event yield in the signal region using control regions to test the Monte Carlo predictions. We observe no events in the signal region, consistent with an expectation of 0.63(-0.07)(+0.84) events. We present 95% confidence level limits on new physics processes in both a signature-based context as well as within a representative minimal supergravity (tanbeta=3) model.

引用

页码：061802 / 1

页数：6

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