Search for first-generation scalar leptoquarks in p(p)over-bar collisions at √s=1.96 TeV -: art. no. 051107

被引:27
作者
Acosta, D [1 ]
Adelman, J
Affolder, T
Akimoto, T
Albrow, MG
Ambrose, D
Amerio, S
Amidei, D
Anastassov, A
Anikeev, K
Annovi, A
Antos, J
Aoki, M
Apollinari, G
Arisawa, T
Arguin, JF
Artikov, A
Ashmanskas, W
Attal, A
Azfar, F
Azzi-Bacchetta, P
Bacchetta, N
Bachacou, H
Badgett, W
Barbaro-Galtieri, A
Barker, GJ
Barnes, VE
Barnett, BA
Baroiant, S
Bauer, G
Bedeschi, F
Behari, S
Belforte, S
Bellettini, G
Bellinger, J
Belloni, A
Ben-Haim, E
Benjamin, D
Beretvas, A
Berry, T
Bhatti, A
Binkley, M
Bisello, D
Bishai, M
Blair, RE
Blocker, C
Bloom, K
Blumenfeld, B
Bocci, A
Bodek, A
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 Autonoma Barcelona, Inst Fis Altes Energies, E-08193 Barcelona, Spain
[5] Univ Bologna, Ist Nazl Fis Nucl, I-40127 Bologna, Italy
[6] Brandeis Univ, Waltham, MA 02254 USA
[7] Univ Calif Davis, Davis, CA 95616 USA
[8] Univ Calif Los Angeles, Los Angeles, CA 90024 USA
[9] Univ Calif San Diego, La Jolla, CA 92093 USA
[10] Univ Calif Santa Barbara, Santa Barbara, CA 93106 USA
[11] Univ Cantabria, CSIC, Inst Fis Cantabria, E-39005 Santander, Spain
[12] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA
[13] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA
[14] Joint Nucl Res Inst, RU-141980 Dubna, Russia
[15] Duke Univ, Durham, NC 27708 USA
[16] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA
[17] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy
[18] Univ Geneva, CH-1211 Geneva, Switzerland
[19] Univ Glasgow, Glasgow G12 8QQ, Lanark, Scotland
[20] Harvard Univ, Cambridge, MA 02138 USA
[21] Univ Helsinki, Dept Phys, Div High Energy Phys, FIN-00014 Helsinki, Finland
[22] Helsinki Inst Phys, FIN-00014 Helsinki, Finland
[23] Hiroshima Univ, Higashihiroshima 724, Japan
[24] Univ Illinois, Urbana, IL 61801 USA
[25] Johns Hopkins Univ, Baltimore, MD 21218 USA
[26] Univ Karlsruhe, Inst Expt Kernphys, D-76128 Karlsruhe, Germany
[27] KEK, High Energy Accelerator Res Org, Tsukuba, Ibaraki 305, Japan
[28] Kyungpook Natl Univ, Ctr High Energy Phys, Taegu 702701, South Korea
[29] Sungkyunkwan Univ, Suwon 440746, South Korea
[30] Seoul Natl Univ, Seoul 151742, South Korea
[31] Ernest Orlando Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA
[32] Univ Liverpool, Liverpool L69 7ZE, Merseyside, England
[33] UCL, London WC1E 6BT, England
[34] MIT, Cambridge, MA 02139 USA
[35] McGill Univ, Inst Particle Phys, Montreal, PQ H3A 2T8, Canada
[36] Univ Toronto, Toronto, ON M5S 1A7, Canada
[37] Univ Michigan, Ann Arbor, MI 48109 USA
[38] Michigan State Univ, E Lansing, MI 48824 USA
[39] Inst Theoret & Expt Phys, Moscow 117259, Russia
[40] Univ New Mexico, Albuquerque, NM 87131 USA
[41] Northwestern Univ, Evanston, IL 60208 USA
[42] Ohio State Univ, Columbus, OH 43210 USA
[43] Okayama Univ, Okayama 7008530, Japan
[44] Osaka City Univ, Osaka 588, Japan
[45] Univ Oxford, Oxford OX1 3RH, England
[46] Univ Padua, Ist Nazl Fis Nucl, Sez Padova Trento, I-35131 Padua, Italy
[47] Univ Penn, Philadelphia, PA 19104 USA
[48] Univ Pisa, Ist Nazl Fis Nucl Pisa, Siena, Italy
[49] Scuola Normale Super Pisa, I-56127 Pisa, Italy
[50] Univ Pittsburgh, Pittsburgh, PA 15260 USA
来源
PHYSICAL REVIEW D | 2005年 / 72卷 / 05期
关键词
D O I
10.1103/PhysRevD.72.051107
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We report on a search for pair production of first-generation scalar leptoquarks (LQ) in p (p) over bar collisions at root s=1.96 TeV using an integrated luminosity of 203 pb(-1) collected at the Fermilab Tevatron collider by the CDF experiment. We observe no evidence for LQ production in the topologies arising from LQ (LQ) over bar -> eqeq and LQ (LQ) over bar -> eq nu q, and derive 95% C.L. upper limits on the LQ production cross section. The results are combined with those obtained from a separately reported CDF search in the topology arising from LQLQ ->nu q nu q and 95% C.L. lower limits on the LQ mass as a function of beta=BR(LQ -> eq) are derived. The limits are 236, 205 and 145 GeV/c(2) for beta=1, beta=0.5 and beta=0.1, respectively.
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页数:7
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