Measurement of the cross section for the production of a W boson in association with b-jets in pp collisions at √s=7 TeV with the ATLAS detector

被引：34

作者：

Aad, G. ^{[1
]}

Abbott, B. ^{[146
]}

Abdallah, J. ^{[17
,18
,19
]}

Abdelalim, A. A. ^{[69
]}

Abdesselam, A. ^{[154
]}

Abdinovl, O. ^{[16
]}

Abi, B. ^{[147
]}

Abolins, M. ^{[120
]}

Abramowicz, H. ^{[203
]}

Abreu, H. ^{[150
,151
]}

Acerbi, E. ^{[121
,122
]}

Acharya, B. S. ^{[216
,217
]}

Adams, D. L. ^{[38
]}

Addy, T. N. ^{[80
]}

Adelman, J. ^{[233
]}

Aderholz, M. ^{[132
]}

Adomeit, S. ^{[131
]}

Adragna, P. ^{[104
]}

Adye, T. ^{[169
]}

Aefsky, S. ^{[35
]}

Aguilar-Saavedra, J. A. ^{[162
,163
,164
]}

Aharrouche, M. ^{[112
]}

Ahlen, S. P. ^{[34
]}

Ahles, F. ^{[1
]}

Ahmad, A. ^{[199
]}

Ahsan, M. ^{[61
]}

Aielli, G. ^{[174
,175
]}

Akdogan, T. ^{[28
]}

Akesson, T. P. A. ^{[110
]}

Akimoto, G. ^{[205
,206
]}

Akimov, A. V. ^{[127
]}

Akiyama, A. ^{[93
]}

Alam, M. S. ^{[2
]}

Alam, M. A. ^{[105
]}

Albert, J. ^{[227
]}

Albrand, S. ^{[77
,78
,79
]}

Aleksa, M. ^{[44
]}

Aleksandrov, I. N. ^{[91
]}

Alessandria, F. ^{[121
]}

Alexa, C. ^{[39
]}

Alexander, G. ^{[203
]}

Alexandre, G. ^{[69
]}

Alexopoulos, T. ^{[15
]}

Alhroob, M. ^{[33
]}

Aliev, M. ^{[24
]}

Alimonti, G. ^{[121
]}

Alison, J. ^{[157
]}

Aliyev, M. ^{[16
]}

Allport, P. P. ^{[101
]}

Allwood-Spiers, S. E. ^{[75
]}

机构：

[1] Univ Freiburg, Fak Math & Phys, Hugstetter Str 55, D-79106 Freiburg, Germany

[2] SUNY Albany, Albany, NY 12222 USA

[3] Univ Alberta, Dept Phys, Edmonton, AB, Canada

[4] Ankara Univ, Dept Phys, TR-06100 Ankara, Turkey

[5] Dumlupinar Univ, Dept Phys, Kutahya, Turkey

[6] Gazi Univ, Dept Phys, Ankara, Turkey

[7] TOBB Univ Econ & Technol, Div Phys, Ankara, Turkey

[8] Turkish Atom Energy Commiss, Ankara, Turkey

[9] CNRS IN2P3, LAPP, Annecy Le Vieux, France

[10] Univ Savoie, Annecy Le Vieux, France

[11] Argonne Natl Lab, Div High Energy Phys, Argonne, IL 60439 USA

[12] Univ Arizona, Dept Phys, Tucson, AZ 85721 USA

[13] Univ Texas Arlington, Dept Phys, Arlington, TX 76019 USA

[14] Univ Athens, Dept Phys, Athens, Greece

[15] Natl Tech Univ Athens, Dept Phys, Zografos, Greece

[16] Azerbaijan Acad Sci, Inst Phys, Baku 370143, Azerbaijan

[17] Univ Autonoma Barcelona, Inst Fis Altes Energies, E-08193 Barcelona, Spain

[18] Univ Autonoma Barcelona, Dept Fis, E-08193 Barcelona, Spain

[19] ICREA, Barcelona, Spain

[20] Univ Belgrade, Inst Phys, Belgrade, Serbia

[21] Vinca Inst Nucl Sci, Belgrade, Serbia

[22] Univ Bergen, Dept Phys & Technol, Bergen, Norway

[23] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Phys, Berkeley, CA 94720 USA

[24] Humboldt Univ, Dept Phys, Berlin, Germany

[25] Univ Bern, Albert Einstein Ctr Fundamental Phys, Bern, Switzerland

[26] Univ Bern, High Energy Phys Lab, Bern, Switzerland

[27] Univ Birmingham, Sch Phys & Astron, Birmingham, W Midlands, England

[28] Bogazici Univ, Dept Phys, Istanbul, Turkey

[29] Dogus Univ, Div Phys, Istanbul, Turkey

[30] Gaziantep Univ, Dept Engn Phys, Gaziantep, Turkey

[31] Univ Bologna, INFN Sez Bologna, Bologna, Italy

[32] Univ Bologna, Dipartmento Fis, Bologna, Italy

[33] Univ Bonn, Inst Phys, Bonn, Germany

[34] Boston Univ, Dept Phys, Boston, MA 02215 USA

[35] Brandeis Univ, Dept Phys, Waltham, MA 02254 USA

[36] Fed Univ Rio De Janeiro COPPE EE IF, Rio De Janeiro, Brazil

[37] Univ Sao Paulo, Inst Fis, BR-01498 Sao Paulo, Brazil

[38] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA

[39] Natl Inst Phys & Nucl Engn, Bucharest, Romania

[40] Univ Politehn Bucuresti, Bucharest, Romania

[41] Univ Buenos Aires, Dept Fis, Buenos Aires, DF, Argentina

[42] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England

[43] Carleton Univ, Dept Phys, Ottawa, ON K1S 5B6, Canada

[44] CERN, Geneva, Switzerland

[45] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA

[46] Pontificia Univ Catolica Chile, Dept Fis, Santiago, Chile

[47] Univ Tecn Feder Santa Maria, Dept Fis, Valparaiso, Chile

[48] Chinese Acad Sci, Inst High Energy Phys, Beijing, Peoples R China

[49] Univ Sci & Technol China, Dept Modern Phys, Hefei 230026, Anhui, Peoples R China

[50] Nanjing Univ, Dept Phys, Nanjing 210008, Jiangsu, Peoples R China

来源：

PHYSICS LETTERS B | 2012年 / 707卷 / 05期

基金：

加拿大自然科学与工程研究理事会; 巴西圣保罗研究基金会; 美国国家科学基金会;

关键词：

PARTON DISTRIBUTIONS;

D O I：

10.1016/j.physletb.2011.12.046

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A measurement is presented of the cross section for the production of a W boson with one or two jets, of which at least one must be a b-jet, in pp collisions at root s = 7 TeV. Production via top decay is not included in the signal definition. The measurement is based on 35 pb(-1) of data collected with the ATLAS detector at the LHC. The W + b-jet cross section is defined for jets reconstructed with the anti-k(t) clustering algorithm with transverse momentum above 25 GeV and rapidity within +/-2.1. The b-jets are identified by reconstructing secondary vertices. The fiducial cross section is measured both for the electron and muon decay channel of the W boson and is found to be 10.2 +/- 1.9(stat) +/- 2.6(syst) pb for one lepton flavour. The results are compared with next-to-leading order QCD calculations, which predict a cross section smaller than, though consistent with, the measured value. (C) 2011 CERN. Published by Elsevier B.V. All rights reserved.

引用

页码：418 / 437

页数：20

共 50 条

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