Measurement of the t(t)over-bar production cross section in p(p)over-bar collisions at √s=1.96 TeV using lepton plus jets events with lifetime b-tagging

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

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

[3] Univ Alberta, Edmonton, AB, Canada

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

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

[6] McGill Univ, Montreal, PQ, Canada

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

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

[9] Univ Los Andes, Bogota, Colombia

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

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

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

[13] Univ San Francisco Quito, Quito, Ecuador

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

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

[16] Univ Aix Marseille 2, CPPM, IN2P3, CNRS, Marseille, France

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

[18] Univ Paris 04, CNRS, LPNHE, IN2P3, Paris, France

[19] Univ Paris 07, Paris, France

[20] CEA Saclay, DAPNIA, Serv Phys Particles, Saclay, France

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

[22] Univ Haute Alsace, Mulhouse, France

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

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

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

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

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

[28] Univ Munich, Munich, Germany

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

[30] Panjab Univ, Chandigarh 160014, India

[31] Univ Delhi, Delhi 110007, India

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

[33] Univ Coll Dublin, Dublin 2, Ireland

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

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

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

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

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

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

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

[41] Inst High Energy Phys, Protvino, Russia

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

[43] Lund Univ, Lund, Sweden

[44] Royal Inst Technol, Stockholm, Sweden

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

[46] Uppsala Univ, Uppsala, Sweden

[47] Univ Lancaster, Lancaster, England

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

[49] Univ Manchester, Manchester, Lancs, England

[50] Univ Arizona, Tucson, AZ 85721 USA

来源：

PHYSICS LETTERS B | 2005年 / 626卷

基金：

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

关键词：

D O I：

10.1016/j.physletb.2005.08.103

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 (t (t) over bar) production cross section (sigma(t (t) over bar)) in pp collisions at root s = 1.96 TeV using 230 pb(-1) of data collected by the DO experiment at the Fermilab Tevatron Collider. We select events with one charged lepton (electron or muon), missing transverse energy, and jets in the final state. We employ lifetime-based b-jet identification techniques to further enhance the t F purity of the selected sample. For a top quark mass of 175 GeV, we measure sigma(t (t) over bar) 8.6(-1.5)(+1.6) (stat. + syst.) +/- 0.6(lumi.) pb, in agreement with the standard model expectation. (c) 2005 Published by Elsevier B.V.

引用

页码：35 / 44

页数：10

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