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

Publication ,  Journal Article
Aad, G; Abbott, B; Abdallah, J; Abdelalim, AA; Abdesselam, A; Abdinov, O; Abi, B; Abolins, M; Abramowicz, H; Abreu, H; Acerbi, E; Acharya, BS ...
Published in: European Physical Journal C
January 1, 2011
Published version (DOI)

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.

Duke Scholars

Ayana T. Arce
Author Ayana T. Arce Physics
Seog Oh
Author Seog Oh Physics

Published In

European Physical Journal C

DOI

10.1140/epjc/s10052-011-1577-6

EISSN

1434-6052

ISSN

1434-6044

Publication Date

January 1, 2011

Volume

71

Issue

3

Related Subject Headings

  • Nuclear & Particles Physics
  • 5107 Particle and high energy physics
  • 5102 Atomic, molecular and optical physics
  • 5101 Astronomical sciences
  • 0206 Quantum Physics
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
 

Citation

APA
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MLA
NLM
Aad, G., Abbott, B., Abdallah, J., Abdelalim, A. A., Abdesselam, A., Abdinov, O., … Artamonov, A. (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). https://doi.org/10.1140/epjc/s10052-011-1577-6
Aad, G., B. Abbott, J. Abdallah, A. A. Abdelalim, A. Abdesselam, O. Abdinov, B. Abi, et al. “Measurement of the top quark-pair production cross section with ATLAS in pp collisions at √s = 7 TeV.” European Physical Journal C 71, no. 3 (January 1, 2011). https://doi.org/10.1140/epjc/s10052-011-1577-6.
Aad G, Abbott B, Abdallah J, Abdelalim AA, Abdesselam A, Abdinov O, et al. Measurement of the top quark-pair production cross section with ATLAS in pp collisions at √s = 7 TeV. European Physical Journal C. 2011 Jan 1;71(3).
Aad, G., et al. “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, Jan. 2011. Scopus, doi: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, Allport PP, Allwood-Spiers SE, Almond J, Aloisio A, Alon R, Alonso A, Alonso J, Alviggi MG, Amako K, Amaral P, Amelung C, Ammosov VV, Amorim A, Amorós G, Amram N, Anastopoulos C, Andeen T, Anders CF, Anderson KJ, Andreazza A, Andrei V, Andrieux ML, Anduaga XS, Angerami A, Anghinolfi F, Anjos N, Annovi A, Antonaki A, Antonelli M, Antonelli S, Antos J, Antunovic B, Anulli F, Aoun S, Bella LA, Apolle R, Arabidze G, Aracena I, Arai Y, Arce ATH, Archambault JP, Arfaoui S, Arguin JF, Arik E, Arik M, Armbruster AJ, Arms KE, Armstrong SR, Arnaez O, Arnault C, Artamonov A. Measurement of the top quark-pair production cross section with ATLAS in pp collisions at √s = 7 TeV. European Physical Journal C. 2011 Jan 1;71(3).
Journal cover image

Published In

European Physical Journal C

DOI

10.1140/epjc/s10052-011-1577-6

EISSN

1434-6052

ISSN

1434-6044

Publication Date

January 1, 2011

Volume

71

Issue

3

Related Subject Headings

  • Nuclear & Particles Physics
  • 5107 Particle and high energy physics
  • 5102 Atomic, molecular and optical physics
  • 5101 Astronomical sciences
  • 0206 Quantum Physics
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics