Measurement of the top quark pair production cross-section with ATLAS in the single lepton channel

被引：90

作者：

Aad, G. ^{[1
]}

Abbott, B. ^{[147
]}

Abdallah, J. ^{[16
,17
,18
]}

Abdelalim, A. A. ^{[72
]}

Abdesselam, A. ^{[155
]}

Abdinov, O. ^{[15
]}

Abi, B. ^{[148
]}

Abolins, M. ^{[120
]}

Abramowicz, H. ^{[206
]}

Abreu, H. ^{[151
,152
]}

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

Acharya, B. S. ^{[219
,220
]}

Adams, D. L. ^{[39
]}

Addy, T. N. ^{[83
]}

Adelman, J. ^{[236
]}

Aderholz, M. ^{[132
]}

Adomeit, S. ^{[131
]}

Adragna, R. ^{[104
]}

Adye, T. ^{[170
]}

Aefsky, S. ^{[34
]}

Aguilar-Saavedra, J. A. ^{[164
,165
,239
]}

Aharrouche, M. ^{[112
]}

Ahlen, S. P. ^{[33
]}

Ahles, F. ^{[1
]}

Ahmad, A. ^{[200
,201
]}

Ahsan, M. ^{[63
]}

Aielli, G. ^{[175
,176
]}

Akdogan, T. ^{[27
]}

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

Akimoto, G. ^{[208
,209
]}

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

Akiyama, A. ^{[95
]}

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

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

Albert, J. ^{[230
]}

Albrand, S. ^{[80
,81
,82
]}

Aleksa, M. ^{[45
]}

Aleksandrov, I. N. ^{[93
]}

Alessandria, F. ^{[122
]}

Alexa, C. ^{[40
]}

Alexander, G. ^{[23
,206
]}

Alexandre, G. ^{[72
]}

Alexopoulos, T. ^{[14
]}

Alhroob, M. ^{[32
]}

Aliev, M. ^{[23
]}

Alimonti, G. ^{[122
]}

Alison, J. ^{[158
]}

Aliyev, M. ^{[15
]}

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

Allwood-Spiers, S. E. ^{[78
]}

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] Gazi Univ, Dept Phys, Ankara, Turkey

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

[7] Turkish Atom Energy Commiss, Ankara, Turkey

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

[9] Univ Savoie, Annecy Le Vieux, France

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

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

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

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

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

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

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

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

[18] ICREA, Barcelona, Spain

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

[20] Univ Belgrade, Vinca Inst Nucl Sci, Belgrade, Serbia

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

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

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

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

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

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

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

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

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

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

[31] Ist Nazl Fis Nucl, Sez Bologna, I-40126 Bologna, Italy

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

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

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

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

[36] Univ Fed Juiz de Fora, Juiz de Fora, Brazil

[37] Univ Fed Sao Joao del Rei, Sao Joao Del Rei, Brazil

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

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

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

[41] Univ Politehn Bucuresti, Bucharest, Romania

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

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

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

[45] CERN, Geneva, Switzerland

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

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

[48] Univ Tecn Federico Santa Maria, Dept Fis, Valparaiso, Chile

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

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

来源：

PHYSICS LETTERS B | 2012年 / 711卷 / 3-4期

基金：

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;

关键词：

High-energy collider experiment; Cross-section; Top physics;

D O I：

10.1016/j.physletb.2012.03.083

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A measurement of the production cross-section for top quark pairs (t (t) over bar) in pp collisions at root s = 7 TeV is presented using data recorded with the ATLAS detector at the Large Hadron Collider. Events are selected in the single lepton topology by requiring an electron or muon, large missing transverse momentum and at least three jets. With a data sample of 35 pb(-1), two different multivariate methods, one of which uses b-quark jet identification while the other does not, use kinematic variables to obtain cross-section measurements of sigma(t (t) over bar) = 187 +/- 11(stat.)(-17)(+18)(syst.) +/- 6(lumi.) pb and sigma(t (t) over bar) = 173 +/- 17(stat.)(-16)(+18)(syst.) +/- 6(lumi.) pb respectively. The two measurements are in agreement with each other and with QCD calculations. The first measurement has a better a priori sensitivity and constitutes the main result of this Letter. (c) 2012 CERN. Published by Elsevier B.V. All rights reserved.

引用

页码：244 / 263

页数：20

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