Measurement of the t(t)over-bar production cross section in p(p)over-bar collisions at √s=1.96 TeV in dilepton final states

被引：17

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：

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[2] York Univ, Toronto, ON M3J 2R7, Canada

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

[4] McGill Univ, Montreal, PQ, Canada

[5] Acad Sinica, Inst High Energy Phys, Beijing, Peoples R China

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

[7] Univ Los Andes, Bogota, Colombia

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

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

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

[11] Univ San Francisco, Quito, Ecuador

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

[13] Univ Grenoble 1, IN2P3, Lab Phys Subatom & Cosmol, Grenoble, France

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

[15] CNRS, Lab Accelerateur Lineaire, IN2P3, Orsay, France

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

[17] Univ Paris 07, Paris, France

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

[19] Univ Strasbourg 1, CNRS, IN2P3, IReS, Mulhouse, France

[20] Univ Haute Alsace, Mulhouse, France

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

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

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

[24] Univ Bonn, Inst Phys, Freiburg, Germany

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

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

[27] Univ Munich, Munich, Germany

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

[29] Panjab Univ, Chandigarh 160014, India

[30] Univ Delhi, Delhi 110007, India

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

[32] Univ Coll Dublin, Dublin 2, Ireland

[33] Korea Univ, Korea Detector Lab, Seoul, South Korea

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

[35] Univ Amsterdam, FOM Inst, NIKHEF, Amsterdam, Netherlands

[36] Radboud Univ Nijmegen, Nijmegen, Netherlands

[37] Dubna Joint Nucl Res Inst, Dubna 141980, Russia

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

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

[40] Inst High Energy Phys, Protvino, Russia

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

[42] Lund Univ, Royal Inst Technol, Lund, Sweden

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

[44] Uppsala Univ, Uppsala, Sweden

[45] Univ Lancaster, Lancaster, England

[46] Univ London Imperial Coll Sci Technol & Med, London, England

[47] Univ Manchester, Manchester, Lancs, England

[48] Univ Arizona, Tucson, AZ 85721 USA

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

[50] Calif State Univ Fresno, Fresno, CA 93740 USA

来源：

PHYSICS LETTERS B | 2005年 / 626卷

基金：

加拿大创新基金会; 巴西圣保罗研究基金会; 美国国家科学基金会; 加拿大自然科学与工程研究理事会; 俄罗斯基础研究基金会; 爱尔兰科学基金会;

关键词：

D O I：

10.1016/j.physletb.2005.08.105

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present a measurement of the top quark pair (a) production cross section in pp collisions at root s = 1.96 TeV using events with two charged leptons in the final state. This analysis utilizes an integrated luminosity of 224-243 pb(-1) collected with the DO detector at the Fermilab Tevatron Collider. We observe 13 events in the e(+)e(-), e mu and mu(+)mu(-) channels with an expected background of 3.2 +/- 0.7 events. For a top quark mass of 175 GeV, we measure a t (t) over bar production cross section of sigma(t (t) over bar) = 8.6(-2.7)(+3.2) (stat) +/- 1.1(syst) +/- 0.6(lumi) pb, consistent with the standard model prediction. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：55 / 64

页数：10

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