Search for the supersymmetric partner of the top quark in p(p)over-bar collisions at √s=1.8 TeV -: art. no. 091101

被引：0

作者：

Affolder, T ^{[1
]}

Akimoto, H

Akopian, A

Albrow, MG

Amaral, P

Amendolia, SR

Amidei, D

Anikeev, K

Antos, J

Apollinari, G

Arisawa, T

Asakawa, T

Ashmanskas, W

Azfar, F

Azzi-Bacchetta, P

Bacchetta, N

Bailey, MW

Bailey, S

de Barbaro, P

Barbaro-Galtieri, A

Barnes, VE

Barnett, A

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

Bevensee, B

Bhatti, A

Binkley, M

Bisello, D

Bishai, M

Blair, RE

Blocker, C

Bloom, K

Blumenfeld, B

Blusk, SR

Bocci, A

Bodek, A

Bokhari, W

Bolla, G

Bonushkin, Y

机构：

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

[2] KEK, High Energy Accelerator Res Org, Tsukuba, Ibaraki 305, Japan

[3] Sungkyunkwan Univ, Dept Chem, Suwon 440746, South Korea

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

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

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

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

[8] Univ Illinois, Urbana, IL 61801 USA

[9] Hiroshima Univ, Higashihiroshima 724, Japan

[10] Harvard Univ, Cambridge, MA 02138 USA

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

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

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

[14] Univ Florida, Gainesville, FL 32611 USA

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

[16] Duke Univ, Durham, NC 27708 USA

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

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

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

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

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

[22] Brandeis Univ, Waltham, MA 02254 USA

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

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

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

[26] MIT, Cambridge, MA 02139 USA

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

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

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

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

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

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

[33] Osaka City Univ, Osaka 588, Japan

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

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

[36] Univ Penn, Philadelphia, PA 19104 USA

[37] Univ Pisa, Ist Nazl Fis Nucl, I-56100 Pisa, Italy

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

[39] Univ Pittsburgh, Pittsburgh, PA 15260 USA

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

[41] Univ Rochester, Rochester, NY 14627 USA

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

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

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

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

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

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

[48] Tufts Univ, Medford, MA 02155 USA

[49] Waseda Univ, Tokyo 169, Japan

[50] Univ Wisconsin, Madison, WI 53706 USA

来源：

PHYSICAL REVIEW D | 2001年 / 63卷 / 09期

关键词：

D O I：

暂无

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report on a search for the supersymmetric partner of the top quark (top squark) produced in t (t) over bar events using 110 ph(-1) of p (p) over bar collisions at roots = 1.8 TeV recorded with the Collider Detector at Fermilab. In the case of a light top squark, the decay of-the top quark into a top squark plus the lightest supersymmetric particle (LSP) could have a significant branching ratio. The observed events are consistent with standard model t (t) over bar production and decay. Hence, we set limits on the branching ratio of the top quark decaying into a top squark plus LSP, excluding branching ratios above 45% for a LSP mass up to 30 GeV/c(2).

引用

页数：6

共 50 条

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