Search for single top quark production in pp collisions at √s=1.96 TeV

被引：36

作者：

Abazov, VM ^{[1
]}

Abbott, B

Abolins, M

Acharya, BS

Adams, M

Adams, T

Agelou, M

Agram, JL

Ahn, SH

Ahsan, M

Alexeev, GD

Alkhazov, G

Alton, A

Alverson, G

Alves, GA

Anastasoaie, M

Andeen, T

Anderson, S

Andrieu, B

Arnoud, Y

Askew, A

Åsman, B

Jesus, ACSA

Atramentov, O

Autermann, C

Avila, C

Badaud, F

Baden, A

Baldin, B

Balm, PW

Banerjee, S

Barberis, E

Bargassa, P

Baringer, P

Barnes, C

Barreto, J

Bartlett, JF

Bassler, U

Bauer, D

Bean, A

Beauceron, S

Begalli, M

Begel, M

Bellavance, A

Beri, SB

Bernardi, G

Bernhard, R

Bertram, I

Besançon, M

Beuselinck, R

机构：

[1] Joint Inst Nucl Res, Dubna, Russia

[2] Univ Buenos Aires, RA-1053 Buenos Aires, DF, Argentina

[3] Ctr Brasileiro Pesquisas Fis, LAFEX, Rio De Janeiro, Brazil

[4] Univ Estado Rio de Janeiro, Rio De Janeiro, Brazil

[5] Univ Estadual Paulista, Inst Fis Teor, BR-01405 Sao Paulo, Brazil

[6] Univ Alberta, Edmonton, AB T6G 2M7, Canada

[7] Simon Fraser Univ, Burnaby, BC V5A 1S6, Canada

[8] York Univ, N York, ON M3J 1P3, Canada

[9] McGill Univ, Montreal, PQ H3A 2T5, Canada

[10] Inst High Energy Phys, Beijing 100039, Peoples R China

[11] Univ Sci & Technol China, Hefei 230026, Peoples R China

[12] Univ Los Andes, Bogota, Colombia

[13] Charles Univ Prague, Ctr Particle Phys, Prague, Czech Republic

[14] Czech Tech Univ, CR-16635 Prague, Czech Republic

[15] Acad Sci Czech Republ, Inst Phys, Ctr Particle Phys, Prague, Czech Republic

[16] Univ San Francisco Quito, Quito, Ecuador

[17] Univ Clermont Ferrand, CNRS, IN2P3, Phys Corpusculaire Lab, Clermont Ferrand, France

[18] Univ Grenoble 1, CNRS, IN2P3, Lab Phys Subatom & Cosmol, F-38042 Grenoble, France

[19] Univ Mediterranee, CNRS, IN2P3, CPPM, Marseille, France

[20] Lab Accelerateur Lineaire, CNRS, IN2P3, F-91405 Orsay, France

[21] Univ Paris 06, CNRS, IN2P3, LPNHE, Paris, France

[22] Univ Paris 07, CNRS, IN2P3, LPNHE, Paris, France

[23] CEA, Serv Phys Particules, DAPNIA, Saclay, France

[24] Univ Strasbourg, CNRS, IN2P3, IReS, Strasbourg, France

[25] Univ Haute Alsace, Mulhouse, France

[26] Univ Lyon 1, CNRS, IN2P3, Inst Phys Nucl Lyon, F-69622 Villeurbanne, France

[27] Rhein Westfal TH Aachen, Phys Inst A 3, D-5100 Aachen, Germany

[28] Univ Bonn, Inst Phys, D-5300 Bonn, Germany

[29] Univ Freiburg, Inst Phys, Freiburg, Germany

[30] Johannes Gutenberg Univ Mainz, Inst Phys, D-6500 Mainz, Germany

[31] Univ Munich, Munich, Germany

[32] Univ Wuppertal, Fachbereich Phys, Wuppertal, Germany

[33] Panjab Univ, Chandigarh 160014, India

[34] Univ Delhi, Delhi 110007, India

[35] Tata Inst Fundamental Res, Bombay 400005, Maharashtra, India

[36] Natl Univ Ireland Univ Coll Dublin, Dublin 4, Ireland

[37] Korea Univ, Korea Detector Lab, Seoul 136701, South Korea

[38] CINVESTAV, Mexico City 14000, DF, Mexico

[39] FOM, NIKHEF H, NL-1098 SJ Amsterdam, Netherlands

[40] Univ Amsterdam, NIKHEF H, NL-1012 WX Amsterdam, Netherlands

[41] Radboud Univ Nijmegen, NIKHEF H, Nijmegen, Netherlands

[42] Joint Inst Nucl Res, Dubna, Russia

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

[44] Moscow MV Lomonosov State Univ, Moscow, Russia

[45] Inst High Energy Phys, Protvino, Russia

[46] Petersburg Nucl Phys Inst, St Petersburg, Russia

[47] Lund Univ, S-22100 Lund, Sweden

[48] Royal Inst Technol, S-10044 Stockholm, Sweden

[49] Stockholm Univ, S-10691 Stockholm, Sweden

[50] Uppsala Univ, S-75105 Uppsala, Sweden

来源：

PHYSICS LETTERS B | 2005年 / 622卷 / 3-4期

基金：

爱尔兰科学基金会; 巴西圣保罗研究基金会; 美国国家科学基金会; 加拿大创新基金会; 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;

关键词：

D O I：

10.1016/j.physletb.2005.07.027

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present a search for electroweak production of single top quarks in the s-channel and t-channel using neural networks for signal-background separation. We have analyzed 230 pb(-1) of data collected with the DO detector at the Fermilab Tevatron Collider at a center-of-mass energy of 1.96 TeV and find no evidence for a single top quark signal. The resulting 95% confidence level upper limits on the single top quark production cross sections are 6.4 pb in the s-channel and 5.0 ph in the t-channel. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：265 / 276

页数：12

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