Measurement of the forward-backward charge asymmetry in top-quark pair production

被引：196

作者：

Abazov, V. M. ^{[1
]}

Abbott, B. ^{[86
]}

Abolins, M. ^{[76
]}

Acharya, B. S. ^{[36
]}

Adams, M. ^{[62
]}

Adams, T. ^{[60
]}

Aguilo, E. ^{[6
,7
,8
,9
]}

Ahn, S. H. ^{[38
]}

Ahsan, M. ^{[70
]}

Alexeev, G. D.

Alkhazov, G. ^{[47
]}

Alton, A. ^{[65
]}

Alverson, G. ^{[74
]}

Alves, G. A. ^{[2
]}

Anastasoaie, M. ^{[43
]}

Ancu, L. S. ^{[43
]}

Andeen, T. ^{[64
]}

Anderson, S. ^{[56
]}

Andrieu, B. ^{[21
,22
]}

Anzelc, M. S. ^{[64
]}

Arnoud, Y. ^{[17
]}

Arov, M. ^{[71
]}

Arthaud, M. ^{[23
]}

Askew, A. ^{[60
]}

Asman, B. ^{[48
,49
,50
,51
]}

Jesus, A. C. S. Assis ^{[3
]}

Atramentov, O. ^{[60
]}

Autermann, C. ^{[28
]}

Avila, C. ^{[11
]}

Ay, C. ^{[31
]}

Badaud, F. ^{[16
]}

Baden, A. ^{[72
]}

Bagby, L. ^{[63
]}

Baldin, B. ^{[61
]}

Bandurin, D. V.

Banerjee, S. ^{[36
]}

Banerjee, P.

Barberis, E. ^{[74
]}

Barfuss, A. -F. ^{[18
]}

Bargassa, P. ^{[91
]}

Baringer, P. ^{[69
]}

Barreto, J. ^{[2
]}

Bartlett, J. F. ^{[61
]}

Bassler, U. ^{[23
]}

Bauer, D. ^{[54
]}

Beale, S. ^{[6
,7
,8
,9
]}

Bean, A. ^{[69
]}

Begalli, M. ^{[3
]}

Begel, M. ^{[82
]}

Belanger-Champagne, C. ^{[48
,49
,50
,51
]}

机构：

[1] Univ Buenos Aires, Buenos Aires, DF, Argentina

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

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

[4] Univ Fed ABC, Santo Andre, Brazil

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

[6] Univ Alberta, Edmonton, AB, Canada

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

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

[9] McGill Univ, Quebec City, PQ, Canada

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

[11] Univ Los Andes, Bogota, Colombia

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

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

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

[15] Univ San Francisco Quito, Quito, Ecuador

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

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

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

[19] CNRS, IN2P3, CPPM, Orsay, France

[20] Univ Paris 11, Orsay, France

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

[22] Univ Paris 07, Paris, France

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

[24] Univ Strasbourg 1, IPHC, Strasbourg, France

[25] Univ Haute Alsace, CNRS, IN2P3, Strasbourg, France

[26] Univ Lyon 1, IPNL, IN2P3, CNRS, Villeurbanne, France

[27] Univ Lyon, Lyon, France

[28] Rhein Westfal TH Aachen, Phys Inst A 3, Aachen, Germany

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

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

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

[32] Univ Munich, Munich, Germany

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

[34] Panjab Univ, Chandigarh 160014, India

[35] Univ Delhi, Delhi 110007, India

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

[37] Univ Coll Dublin, Dublin 2, Ireland

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

[39] Sungkyunkwan Univ, Suwon, South Korea

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

[41] NIKHEF, FOM Inst, Amsterdam, Netherlands

[42] Univ Amsterdam, NIKHEF, Amsterdam, Netherlands

[43] Radboud Univ Nijmegen, NIKHEF, NL-6525 ED Nijmegen, Netherlands

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

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

[46] Inst High Energy Phys, Protvino, Russia

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

[48] Lund Univ, Lund, Sweden

[49] Royal Inst Technol, Stockholm, Sweden

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

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 100卷 / 14期

基金：

英国科学技术设施理事会;

关键词：

D O I：

10.1103/PhysRevLett.100.142002

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present the first measurement of the integrated forward-backward charge asymmetry in top-quark-top-antiquark pair (t (t) over bar) production in proton-antiproton (p (p) over bar) collisions in the lepton+jets final state. Using a b-jet tagging algorithm and kinematic reconstruction assuming t (t) over bar +X production and decay, a sample of 0.9 fb(-1) of data, collected by the D0 experiment at the Fermilab Tevatron Collider, is used to measure the asymmetry for different jet multiplicities. The result is also used to set upper limits on t (t) over bar +X production via a Z' resonance.

引用

页数：7

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