Measurement of the top quark pair production cross section in pp collisions at √s=7 TeV in dilepton final states with ATLAS

被引：55

作者：

Aad, G. ^{[1
]}

Abbott, B. ^{[148
]}

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

Abdelalim, A. A. ^{[70
]}

Abdesselam, A. ^{[156
]}

Abdinov, O. ^{[16
]}

Abi, B. ^{[149
]}

Abolins, M. ^{[122
]}

Abramowicz, H. ^{[205
]}

Abreu, H. ^{[152
,153
]}

Acerbi, E. ^{[123
,124
]}

Acharya, B. S. ^{[218
,219
]}

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

Addy, T. N. ^{[82
]}

Adelman, J. ^{[235
]}

Aderholz, M. ^{[134
]}

Adomeit, S. ^{[133
]}

Adragna, P. ^{[106
]}

Adye, T. ^{[171
]}

Aefsky, S. ^{[35
]}

Aguilar-Saavedra, J. A. ^{[164
,165
,166
]}

Aharrouche, M. ^{[114
]}

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

Ahles, F. ^{[1
]}

Ahmad, A. ^{[201
]}

Ahsan, M. ^{[62
]}

Aielli, G. ^{[176
,177
]}

Akdogana, T. ^{[28
]}

Akesson, T. P. A. ^{[112
]}

Akimoto, G. ^{[207
,208
]}

Akimov, A. V. ^{[129
]}

Akiyama, A. ^{[95
]}

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

Alam, M. A. ^{[107
]}

Albert, J. ^{[229
]}

Albrand, S. ^{[79
,80
,81
]}

Aleksa, M. ^{[44
]}

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

Alessandria, F. ^{[123
]}

Alexa, C. ^{[39
]}

Aexander, G. ^{[205
]}

Alexandre, G. ^{[70
]}

Alexopoulos, T. ^{[15
]}

Alhroob, M. ^{[33
]}

Aliev, M. ^{[24
]}

Alimonti, G. ^{[123
]}

Alison, J. ^{[159
]}

Aliyev, M. ^{[16
]}

Allport, P. P. ^{[103
]}

Allwood-Spiers, S. E. ^{[77
]}

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] Univ Savoie, Annecy Le Vieux, France

[10] CNRS IN2P3, LAPP, 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] ICREA, Barcelona, Spain

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

[19] Inst Fis Altes Energies, 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] 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, Anhui, Peoples R China

[50] Nanjing Univ, Dept Phys, Nanjing, 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; 美国国家科学基金会; 巴西圣保罗研究基金会;

关键词：

Top physics; Heavy quark production; Total cross section;

D O I：

10.1016/j.physletb.2011.12.055

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A measurement of the production cross section of top quark pairs (t (t) over bar) in proton-proton collisions at a center-of-mass energy of 7 TeV recorded with the ATLAS detector at the Large Hadron Collider is reported. Candidate events are selected in the dilepton topology with large missing transverse energy and at least two jets. Using a data sample corresponding to an integrated luminosity of 35 pb(-1), a t (t) over bar production cross section sigma(t (t) over bar) = 177 +/- 20(stat.) +/- 14(syst.) +/- 7(lum.) pb is measured for an assumed top quark mass of m(t) = 172.5 GeV. A second measurement requiring at least one jet identified as coming from a b quark yields a comparable result, demonstrating that the dilepton final states are consistent with being accompanied by b-quark jets. These measurements are in good agreement with Standard Model predictions. (C) 2011 CERN. Published by Elsevier B.V. All rights reserved.

引用

页码：459 / 477

页数：19

共 47 条

[1] Measurement of inclusive jet and dijet cross sections in proton-proton collisions at 7 TeV centre-of-mass energy with the ATLAS detector [J].

Aad, G. ;

Abbott, B. ;

Abdallah, J. ;

Abdelalim, A. A. ;

Abdesselam, A. ;

Abdinov, O. ;

Abi, B. ;

Abolins, M. ;

Abramowicz, H. ;

Abreu, H. ;

Acerbia, E. ;

Acharya, B. S. ;

Ackers, M. ;

Adams, D. L. ;

Addy, T. N. ;

Adelman, J. ;

Aderholz, M. ;

Adomeit, S. ;

Adorisio, C. ;

Adragna, P. ;

Adye, T. ;

Aefsky, S. ;

Aguilar-Saavedra, J. A. ;

Aharrouche, M. ;

Ahlen, S. P. ;

Ahles, F. ;

Ahmad, A. ;

Ahmed, H. ;

Ahsan, M. ;

Aielli, G. ;

Akdogan, T. ;

Akesson, T. P. ;

Akimoto, G. ;

Akimov, A. V. ;

Aktas, A. ;

Alam, M. S. ;

Alam, M. A. ;

Albrand, S. ;

Aleksa, M. ;

Aleksandrov, I. N. ;

Aleppo, M. ;

Alessandriaa, F. ;

Alexaa, C. ;

Alexander, G. ;

Alexandre, G. ;

Alexopoulos, T. ;

Alhroob, M. ;

Aliev, M. ;

Alimonti, G. ;

Alison, J. .

EUROPEAN PHYSICAL JOURNAL C, 2011, 71 (02) :1-59

[2] The ATLAS Simulation Infrastructure [J].

Aad, G. ;

Abbott, B. ;

Abdallah, J. ;

Abdelalim, A. A. ;

Abdesselam, A. ;

Abdinov, O. ;

Abi, B. ;

Abolins, M. ;

Abramowicz, H. ;

Abreu, H. ;

Acharya, B. S. ;

Adams, D. L. ;

Addy, T. N. ;

Adelman, J. ;

Adorisio, C. ;

Adragna, P. ;

Adye, T. ;

Aefsky, S. ;

Aguilar-Saavedra, J. A. ;

Aharrouche, M. ;

Ahlen, S. P. ;

Ahles, F. ;

Ahmad, A. ;

Ahmed, H. ;

Ahsan, M. ;

Aielli, G. ;

Akdogan, T. ;

Akesson, T. P. ;

Akimoto, G. ;

Akimov, A. V. ;

Aktas, A. ;

Alam, M. S. ;

Alam, M. A. ;

Albrand, S. ;

Aleksa, M. ;

Aleksandrov, I. N. ;

Alexa, C. ;

Alexander, G. ;

Alexandre, G. ;

Alexopoulos, T. ;

Alhroob, M. ;

Aliev, M. ;

Alimonti, G. ;

Alison, J. ;

Aliyev, M. ;

Allport, P. P. ;

Allwood-Spiers, S. E. ;

Almond, J. ;

Aloisio, A. ;

Alon, R. .

EUROPEAN PHYSICAL JOURNAL C, 2010, 70 (03) :823-874

[3] The ATLAS Experiment at the CERN Large Hadron Collider [J].

Aad, G. ;

Abat, E. ;

Abdallah, J. ;

Abdelalim, A. A. ;

Abdesselam, A. ;

Abdinov, O. ;

Abi, B. A. ;

Abolins, M. ;

Abramowicz, H. ;

Acerbi, E. ;

Acharya, B. S. ;

Achenbach, R. ;

Ackers, M. ;

Adams, D. L. ;

Adamyan, F. ;

Addy, T. N. ;

Aderholz, M. ;

Adorisio, C. ;

Adragna, P. ;

Aharrouche, M. ;

Ahlen, S. P. ;

Ahles, F. ;

Ahmad, A. ;

Ahmed, H. ;

Aielli, G. ;

Akesson, P. F. ;

Akesson, T. P. A. ;

Alam, S. M. ;

Albert, J. ;

Albrand, S. ;

Aleksa, M. ;

Aleksandrov, I. N. ;

Aleppo, M. ;

Alessandria, F. ;

Alexa, C. ;

Alexander, G. ;

Alexopoulos, T. ;

Alimonti, G. ;

Aliyev, M. ;

Allport, P. P. ;

Allwood-Spiers, S. E. ;

Aloisio, A. ;

Alonso, J. ;

Alves, R. ;

Alviggi, M. G. ;

Amako, K. ;

Amaral, P. ;

Amaral, S. P. ;

Ambrosini, G. ;

Ambrosio, G. .

JOURNAL OF INSTRUMENTATION, 2008, 3

[4] Measurement of the top pair production cross section in the dilepton decay channel in p(p)over-bar collisions at √s = 1.96 TeV [J].

Aaltonen, T. ;

Gonzalez, B. Alvarez ;

Amerio, S. ;

Amidei, D. ;

Anastassov, A. ;

Annovi, A. ;

Antos, J. ;

Apollinari, G. ;

Appel, J. A. ;

Apresyan, A. ;

Arisawa, T. ;

Artikov, A. ;

Asaadi, J. ;

Ashmanskas, W. ;

Auerbach, B. ;

Aurisano, A. ;

Azfar, F. ;

Badgett, W. ;

Barbaro-Galtieri, A. ;

Barnes, V. E. ;

Barnett, B. A. ;

Barria, P. ;

Bartos, P. ;

Bauce, M. ;

Bauer, G. ;

Bedeschi, F. ;

Beecher, D. ;

Behari, S. ;

Bellettini, G. ;

Bellinger, J. ;

Benjamin, D. ;

Beretvas, A. ;

Bhatti, A. ;

Binkley, M. ;

Bisello, D. ;

Bizjak, I. ;

Bland, K. R. ;

Blocker, C. ;

Blumenfeld, B. ;

Bocci, A. ;

Bodek, A. ;

Bortoletto, D. ;

Boudreau, J. ;

Boveia, A. ;

Brau, B. ;

Brigliadori, L. ;

Brisuda, A. ;

Bromberg, C. ;

Brucken, E. ;

Bucciantonio, M. .

PHYSICAL REVIEW D, 2010, 82 (05)

[5] Measurement of the t(t)over-bar production cross section using dilepton events in p(p)over-bar collisions [J].

Abazov, V. M. ;

Abbott, B. ;

Acharya, B. S. ;

Adams, M. ;

Adams, T. ;

Alexeev, G. D. ;

Alkhazov, G. ;

Alton, A. ;

Alverson, G. ;

Alves, G. A. ;

Ancu, L. S. ;

Aoki, M. ;

Arov, M. ;

Askew, A. ;

Asman, B. ;

Atramentov, O. ;

Avila, C. ;

BackusMayes, J. ;

Badaud, F. ;

Bagby, L. ;

Baldin, B. ;

Bandurin, D. V. ;

Banerjee, S. ;

Barberis, E. ;

Baringer, R. ;

Barreto, J. ;

Bartlett, J. F. ;

Bassler, U. ;

Bazterra, V. ;

Beale, S. ;

Bean, A. ;

Begalli, M. ;

Begel, M. ;

Belanger-Champagne, C. ;

Bellantoni, L. ;

Beri, S. B. ;

Bernardi, G. ;

Bernhard, R. ;

Bertram, I. ;

Besancon, M. ;

Beuselinck, R. ;

Bezzubov, V. A. ;

Bhat, P. C. ;

Bhatnagar, V. ;

Blazey, G. ;

Blessing, S. ;

Bloom, K. ;

Boehnlein, A. ;

Boline, D. ;

Boos, E. E. .

PHYSICS LETTERS B, 2011, 704 (05) :403-410

[6] GEANT4-a simulation toolkit [J].

Agostinelli, S ;

Allison, J ;

Amako, K ;

Apostolakis, J ;

Araujo, H ;

Arce, P ;

Asai, M ;

Axen, D ;

Banerjee, S ;

Barrand, G ;

Behner, F ;

Bellagamba, L ;

Boudreau, J ;

Broglia, L ;

Brunengo, A ;

Burkhardt, H ;

Chauvie, S ;

Chuma, J ;

Chytracek, R ;

Cooperman, G ;

Cosmo, G ;

Degtyarenko, P ;

Dell'Acqua, A ;

Depaola, G ;

Dietrich, D ;

Enami, R ;

Feliciello, A ;

Ferguson, C ;

Fesefeldt, H ;

Folger, G ;

Foppiano, F ;

Forti, A ;

Garelli, S ;

Giani, S ;

Giannitrapani, R ;

Gibin, D ;

Cadenas, JJG ;

González, I ;

Abril, GG ;

Greeniaus, G ;

Greiner, W ;

Grichine, V ;

Grossheim, A ;

Guatelli, S ;

Gumplinger, P ;

Hamatsu, R ;

Hashimoto, K ;

Hasui, H ;

Heikkinen, A ;

Howard, A .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2003, 506 (03) :250-303

[7] HATHOR - HAdronic Top and Heavy quarks crOss section calculatoR [J].

Aliev, M. ;

Lacker, H. ;

Langenfeld, U. ;

Moch, S. ;

Uwer, P. ;

Wiedermann, M. .

COMPUTER PHYSICS COMMUNICATIONS, 2011, 182 (04) :1034-1046

[8] A general framework for implementing NLO calculations in shower Monte Carlo programs: the POWHEG BOX [J].

Alioli, Simone ;

Nason, Paolo ;

Oleari, Carlo ;

Re, Emanuele .

JOURNAL OF HIGH ENERGY PHYSICS, 2010, (06)

[9] Comparative study of various algorithms for the merging of parton showers and matrix elements in hadronic collisions [J].

Alwall, J. ;

Hoche, S. ;

Krauss, F. ;

Lavesson, N. ;

Lonnblad, L. ;

Maltoni, F. ;

Mangano, M. L. ;

Moretti, M. ;

Papadopoulos, C. G. ;

Piccinini, F. ;

Schumann, S. ;

Treccani, M. ;

Winter, J. ;

Worek, M. .

EUROPEAN PHYSICAL JOURNAL C, 2008, 53 (03) :473-500

[10] High-precision QCD at hadron colliders: Electroweak gauge boson rapidity distributions at next-to-next-to leading order [J].

Anastasiou, C ;

Dixon, L ;

Melnikov, K ;

Petriello, F .

PHYSICAL REVIEW D, 2004, 69 (09) :27

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