Measurement of the forward-backward asymmetry in top quark-antiquark production in p(p)over-bar collisions using the lepton plus jets channel

被引：48

作者：

Abazov, V. M. ^{[33
]}

Abbott, B. ^{[70
]}

Acharya, B. S. ^{[27
]}

Adams, M. ^{[49
]}

Adams, T. ^{[47
]}

Agnew, J. P. ^{[44
]}

Alexeev, G. D. ^{[33
]}

Alkhazov, G. ^{[37
]}

Alton, A. ^{[29
,59
]}

Askew, A. ^{[47
]}

Atkins, S. ^{[57
]}

Augsten, K. ^{[7
]}

Avila, C. ^{[5
]}

Badaud, F. ^{[10
]}

Bagby, L. ^{[48
]}

Baldin, B. ^{[48
]}

Bandurin, D. V. ^{[76
]}

Banerjee, S. ^{[27
]}

Barberis, E. ^{[58
]}

Baringer, P. ^{[56
]}

Bartlett, J. F. ^{[48
]}

Bassler, U. ^{[16
]}

Bazterra, V. ^{[49
]}

Bean, A. ^{[56
]}

Begalli, M. ^{[2
]}

Bellantoni, L. ^{[48
]}

Beri, S. B. ^{[25
]}

Bernardi, G. ^{[14
,15
]}

Bernhard, R. ^{[21
]}

Bertram, I. ^{[42
]}

Besancon, M. ^{[16
]}

Beuselinck, R. ^{[43
]}

Bhat, P. C. ^{[48
]}

Bhatia, S. ^{[61
]}

Bhatnagar, V. ^{[25
]}

Blazey, G. ^{[50
]}

Blessing, S. ^{[47
]}

Bloom, K. ^{[62
]}

Boehnlein, A. ^{[48
]}

Boline, D. ^{[67
]}

Boos, E. E. ^{[35
]}

Borissov, G. ^{[42
]}

Borysova, M. ^{[41
]}

Brandt, A. ^{[73
]}

Brandt, O. ^{[22
]}

Brock, R. ^{[60
]}

Bross, A. ^{[48
]}

Brown, D. ^{[14
,15
]}

Bu, X. B. ^{[48
]}

Buehler, M. ^{[48
]}

机构：

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

[2] Univ Estado Rio de Janeiro, BR-20550011 Rio De Janeiro, Brazil

[3] Univ Fed ABC, Santo Andre, Brazil

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

[5] Univ Los Andes, Bogota, Colombia

[6] Charles Univ Prague, Fac Math & Phys, Ctr Particle Phys, Prague, Czech Republic

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

[8] Acad Sci Czech Republ, Inst Phys, Prague, Czech Republic

[9] Univ San Francisco Quito, Quito, Ecuador

[10] Univ Blaise Pascal, CNRS, IN2P3, LPC, Clermont, France

[11] Univ Grenoble 1, CNRS, IN2P3, LPSC,Inst Natl Polytech Grenoble, Grenoble, France

[12] Aix Marseille Univ, CNRS, IN2P3, CPPM, Marseille, France

[13] Univ Paris 11, CNRS, IN2P3, LAL, F-91405 Orsay, France

[14] Univ Paris 06, LPNHE, Paris, France

[15] Univ Paris 07, CNRS, IN2P3, Paris, France

[16] CEA Saclay, Irfu, SPP, Saclay, France

[17] Univ Strasbourg, CNRS, IN2P3, IPHC, Strasbourg, France

[18] Univ Lyon 1, CNRS, IN2P3, IPNL, F-69622 Villeurbanne, France

[19] Univ Lyon, Lyon, France

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

[21] Univ Freiburg, Inst Phys, D-79106 Freiburg, Germany

[22] Univ Gottingen, Inst Phys 2, Gottingen, Germany

[23] Johannes Gutenberg Univ Mainz, Inst Phys, Mainz, Germany

[24] Univ Munich, Munich, Germany

[25] Panjab Univ, Chandigarh 160014, India

[26] Univ Delhi, Delhi 110007, India

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

[28] Univ Coll Dublin, Dublin 2, Ireland

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

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

[31] Nikhef, Amsterdam, Netherlands

[32] Radboud Univ Nijmegen, NL-6525 ED Nijmegen, Netherlands

[33] Joint Inst Nucl Res, Dubna, Russia

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

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

[36] Inst High Energy Phys, Protvino, Russia

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

[38] Inst Catalana Recerca & Estudis Avancats, Barcelona, Spain

[39] Inst Fis Altes Energies, Barcelona, Spain

[40] Uppsala Univ, Uppsala, Sweden

[41] Taras Shevchenko Natl Univ Kyiv, Kiev, Ukraine

[42] Univ Lancaster, Lancaster LA1 4YB, England

[43] Univ London Imperial Coll Sci Technol & Med, London SW7 2AZ, England

[44] Univ Manchester, Manchester M13 9PL, Lancs, England

[45] Univ Arizona, Tucson, AZ 85721 USA

[46] Univ Calif Riverside, Riverside, CA 92521 USA

[47] Florida State Univ, Tallahassee, FL 32306 USA

[48] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA

[49] Univ Illinois, Chicago, IL 60607 USA

[50] No Illinois Univ, De Kalb, IL 60115 USA

来源：

PHYSICAL REVIEW D | 2014年 / 90卷 / 07期

基金：

俄罗斯基础研究基金会; 美国国家科学基金会; 新加坡国家研究基金会; 爱尔兰科学基金会; 中国国家自然科学基金; 英国科学技术设施理事会; 瑞典研究理事会;

关键词：

CHARGE ASYMMETRY; RUN-II; IDENTIFICATION; PHYSICS;

D O I：

10.1103/PhysRevD.90.072011

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present a measurement of the forward-backward asymmetry in top quark-antiquark production using the full Tevatron Run II data set collected by the D0 experiment at Fermilab. The measurement is performed in lepton + jets final states using a new kinematic fitting algorithm for events with four or more jets and a new partial reconstruction algorithm for events with only three jets. Corrected for detector acceptance and resolution effects, the asymmetry is evaluated to be A(FB) = (10.6 +/- 3.0)%. Results are consistent with the standard model predictions which range from 5.0% to 8.8%. We also present the dependence of the asymmetry on the invariant mass of the top quark-antiquark system and the difference in rapidities of the top quark and antiquark.

引用

页数：16

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