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

G. Aad; B. Abbott; J. Abdallah; A. A. Abdelalim; A. Abdesselam; O. Abdinov; B. Abi; M. Abolins; H. Abramowicz; H. Abreu; E. Acerbi; B. S. Acharya; M. Ackers; D. L. Adams; T. N. Addy; J. Adelman; M. Aderholz; S. Adomeit; P. Adragna; T. Adye; S. Aefsky; J. A. Aguilar-Saavedra; M. Aharrouche; S. P. Ahlen; F. Ahles; A. Ahmad; H. Ahmed; M. Ahsan; G. Aielli; T. Akdogan; T. P A Åkesson; G. Akimoto; A. V. Akimov; M. S. Alam; M. A. Alam; S. Albrand; M. Aleksa; I. N. Aleksandrov; M. Aleppo; F. Alessandria; C. Alexa; G. Alexander; G. Alexandre; T. Alexopoulos; M. Alhroob; M. Aliev; G. Alimonti; J. Alison; M. Aliyev; N. Ruckstuhl; The ATLAS Collaboration

doi:10.1140/epjc/s10052-011-1577-6

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

G. Aad
, B. Abbott
, J. Abdallah
, A. A. Abdelalim
, A. Abdesselam
, O. Abdinov
, B. Abi
, M. Abolins
, H. Abramowicz
, H. Abreu
, E. Acerbi
, B. S. Acharya
, M. Ackers
, D. L. Adams
, T. N. Addy
, J. Adelman
, M. Aderholz
, S. Adomeit
, P. Adragna
, T. Adye

S. Aefsky, J. A. Aguilar-Saavedra, M. Aharrouche, S. P. Ahlen, F. Ahles, A. Ahmad, H. Ahmed, M. Ahsan, G. Aielli, T. Akdogan, T. P A Åkesson, G. Akimoto, A. V. Akimov, M. S. Alam, M. A. Alam, S. Albrand, M. Aleksa, I. N. Aleksandrov, M. Aleppo, F. Alessandria, C. Alexa, G. Alexander, G. Alexandre, T. Alexopoulos, M. Alhroob, M. Aliev, G. Alimonti, J. Alison, M. Aliyev, N. Ruckstuhl, The ATLAS Collaboration

Physics and Astronomy (Twin Cities)

Research output: Contribution to journal › Article › peer-review

196 Scopus citations

Abstract

A measurement of the production cross-section for top quark pairs (tt̅) in pp collisions at √s =7 TeVis presented using data recorded with the ATLAS detector at the Large Hadron Collider. Events are selected in two different topologies: single lepton (electron e or muon μ) with large missing transverse energy and at least four jets, and dilepton (ee, μμ or eμ) with large missing transverse energy and at least two jets. In a data sample of 2.9 pb^–1, 37 candidate events are observed in the single-lepton topology and 9 events in the dilepton topology. The corresponding expected backgrounds from non-tt̅ Standard Model processes are estimated using data-driven methods and determined to be 12.2 ± 3.9 events and 2.5± 0.6 events, respectively. The kinematic properties of the selected events are consistent with SM tt̅ production. The inclusive top quark pair production cross-section is measured to be The measurement agrees with perturbative QCD calculations.

Original language	English (US)
Article number	1577
Journal	European Physical Journal C
Volume	71
Issue number	3
DOIs	https://doi.org/10.1140/epjc/s10052-011-1577-6
State	Published - 2011

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Publisher Copyright:
© CERN for the benefit of the ATLAS collaboration 2011.

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10.1140/epjc/s10052-011-1577-6

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Aad, G., Abbott, B., Abdallah, J., Abdelalim, A. A., Abdesselam, A., Abdinov, O., Abi, B., Abolins, M., Abramowicz, H., Abreu, H., Acerbi, E., Acharya, B. S., Ackers, M., Adams, D. L., Addy, T. N., Adelman, J., Aderholz, M., Adomeit, S., Adragna, P., ... The ATLAS Collaboration (2011). Measurement of the top quark-pair production cross section with ATLAS in pp collisions at √s = 7 TeV. European Physical Journal C, 71(3), Article 1577. https://doi.org/10.1140/epjc/s10052-011-1577-6

Aad, G, Abbott, B, Abdallah, J, Abdelalim, AA, Abdesselam, A, Abdinov, O, Abi, B, Abolins, M, Abramowicz, H, Abreu, H, Acerbi, E, Acharya, BS, Ackers, M, Adams, DL, Addy, TN, Adelman, J, Aderholz, M, Adomeit, S, Adragna, P, Adye, T, Aefsky, S, Aguilar-Saavedra, JA, Aharrouche, M, Ahlen, SP, Ahles, F, Ahmad, A, Ahmed, H, Ahsan, M, Aielli, G, Akdogan, T, Åkesson, TPA, Akimoto, G, Akimov, AV, Alam, MS, Alam, MA, Albrand, S, Aleksa, M, Aleksandrov, IN, Aleppo, M, Alessandria, F, Alexa, C, Alexander, G, Alexandre, G, Alexopoulos, T, Alhroob, M, Aliev, M, Alimonti, G, Alison, J, Aliyev, M, Ruckstuhl, N & The ATLAS Collaboration 2011, 'Measurement of the top quark-pair production cross section with ATLAS in pp collisions at √s = 7 TeV', European Physical Journal C, vol. 71, no. 3, 1577. https://doi.org/10.1140/epjc/s10052-011-1577-6

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title = "Measurement of the top quark-pair production cross section with ATLAS in pp collisions at √s = 7 TeV",

abstract = "A measurement of the production cross-section for top quark pairs (tt̅) in pp collisions at √s =7 TeVis presented using data recorded with the ATLAS detector at the Large Hadron Collider. Events are selected in two different topologies: single lepton (electron e or muon μ) with large missing transverse energy and at least four jets, and dilepton (ee, μμ or eμ) with large missing transverse energy and at least two jets. In a data sample of 2.9 pb–1, 37 candidate events are observed in the single-lepton topology and 9 events in the dilepton topology. The corresponding expected backgrounds from non-tt̅ Standard Model processes are estimated using data-driven methods and determined to be 12.2 ± 3.9 events and 2.5± 0.6 events, respectively. The kinematic properties of the selected events are consistent with SM tt̅ production. The inclusive top quark pair production cross-section is measured to be The measurement agrees with perturbative QCD calculations.",

author = "G. Aad and B. Abbott and J. Abdallah and Abdelalim, \{A. A.\} and A. Abdesselam and O. Abdinov and B. Abi and M. Abolins and H. Abramowicz and H. Abreu and E. Acerbi and Acharya, \{B. S.\} and M. Ackers and Adams, \{D. L.\} and Addy, \{T. N.\} and J. Adelman and M. Aderholz and S. Adomeit and P. Adragna and T. Adye and S. Aefsky and Aguilar-Saavedra, \{J. A.\} and M. Aharrouche and Ahlen, \{S. P.\} and F. Ahles and A. Ahmad and H. Ahmed and M. Ahsan and G. Aielli and T. Akdogan and {\AA}kesson, \{T. P A\} and G. Akimoto and Akimov, \{A. V.\} and Alam, \{M. S.\} and Alam, \{M. A.\} and S. Albrand and M. Aleksa and Aleksandrov, \{I. N.\} and M. Aleppo and F. Alessandria and C. Alexa and G. Alexander and G. Alexandre and T. Alexopoulos and M. Alhroob and M. Aliev and G. Alimonti and J. Alison and M. Aliyev and N. Ruckstuhl and \{The ATLAS Collaboration\}",

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year = "2011",

doi = "10.1140/epjc/s10052-011-1577-6",

language = "English (US)",

volume = "71",

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T1 - Measurement of the top quark-pair production cross section with ATLAS in pp collisions at √s = 7 TeV

AU - Aad, G.

AU - Abbott, B.

AU - Abdallah, J.

AU - Abdelalim, A. A.

AU - Abdesselam, A.

AU - Abdinov, O.

AU - Abi, B.

AU - Abolins, M.

AU - Abramowicz, H.

AU - Abreu, H.

AU - Acerbi, E.

AU - Acharya, B. S.

AU - Ackers, M.

AU - Adams, D. L.

AU - Addy, T. N.

AU - Adelman, J.

AU - Aderholz, M.

AU - Adomeit, S.

AU - Adragna, P.

AU - Adye, T.

AU - Aefsky, S.

AU - Aguilar-Saavedra, J. A.

AU - Aharrouche, M.

AU - Ahlen, S. P.

AU - Ahles, F.

AU - Ahmad, A.

AU - Ahmed, H.

AU - Ahsan, M.

AU - Aielli, G.

AU - Akdogan, T.

AU - Åkesson, T. P A

AU - Akimoto, G.

AU - Akimov, A. V.

AU - Alam, M. S.

AU - Alam, M. A.

AU - Albrand, S.

AU - Aleksa, M.

AU - Aleksandrov, I. N.

AU - Aleppo, M.

AU - Alessandria, F.

AU - Alexa, C.

AU - Alexander, G.

AU - Alexandre, G.

AU - Alexopoulos, T.

AU - Alhroob, M.

AU - Aliev, M.

AU - Alimonti, G.

AU - Alison, J.

AU - Aliyev, M.

AU - Ruckstuhl, N.

AU - The ATLAS Collaboration

PY - 2011

Y1 - 2011

N2 - A measurement of the production cross-section for top quark pairs (tt̅) in pp collisions at √s =7 TeVis presented using data recorded with the ATLAS detector at the Large Hadron Collider. Events are selected in two different topologies: single lepton (electron e or muon μ) with large missing transverse energy and at least four jets, and dilepton (ee, μμ or eμ) with large missing transverse energy and at least two jets. In a data sample of 2.9 pb–1, 37 candidate events are observed in the single-lepton topology and 9 events in the dilepton topology. The corresponding expected backgrounds from non-tt̅ Standard Model processes are estimated using data-driven methods and determined to be 12.2 ± 3.9 events and 2.5± 0.6 events, respectively. The kinematic properties of the selected events are consistent with SM tt̅ production. The inclusive top quark pair production cross-section is measured to be The measurement agrees with perturbative QCD calculations.

AB - A measurement of the production cross-section for top quark pairs (tt̅) in pp collisions at √s =7 TeVis presented using data recorded with the ATLAS detector at the Large Hadron Collider. Events are selected in two different topologies: single lepton (electron e or muon μ) with large missing transverse energy and at least four jets, and dilepton (ee, μμ or eμ) with large missing transverse energy and at least two jets. In a data sample of 2.9 pb–1, 37 candidate events are observed in the single-lepton topology and 9 events in the dilepton topology. The corresponding expected backgrounds from non-tt̅ Standard Model processes are estimated using data-driven methods and determined to be 12.2 ± 3.9 events and 2.5± 0.6 events, respectively. The kinematic properties of the selected events are consistent with SM tt̅ production. The inclusive top quark pair production cross-section is measured to be The measurement agrees with perturbative QCD calculations.

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DO - 10.1140/epjc/s10052-011-1577-6

M3 - Article

AN - SCOPUS:84876438744

SN - 1434-6044

VL - 71

JO - European Physical Journal C

JF - European Physical Journal C

IS - 3

M1 - 1577

ER -

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

Abstract

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