Measurement of the cross section for top-quark pair production in pp collisions at sqrt(s) = 7 TeV with the ATLAS detector using final states with two high-pt leptons - IN2P3 - Institut national de physique nucléaire et de physique des particules
Article Dans Une Revue Journal of High Energy Physics Année : 2012

Measurement of the cross section for top-quark pair production in pp collisions at sqrt(s) = 7 TeV with the ATLAS detector using final states with two high-pt leptons

G. Aad , S. Albrand (1) , M.L. Andrieux (1) , Q. Buat (1) , B. Clement (1) , J. Collot (1) , S. Crépé-Renaudin (1) , T. Delemontex (1) , P.A. Delsart (1) , M.H. Genest (1) , J.Y. Hostachy (1) , E. Laisne (1) , F. Ledroit-Guillon (1) , A. Lleres (1) , A. Lucotte (1) , F. Malek (1) , P. Martin (1) , F. Polci (1) , J. Stark (1) , X. Sun (1) , B. Trocmé (1) , J. Wang (1) , C. Weydert (1) , C. Biscarat (2) , E. Cogneras (2) , G. Rahal (2) , S. Abdel Khalek (3) , H. Abreu (3) , N. Andari (3) , C. Arnault (3) , E. Augé (3) , P. Barrillon (3) , M. Benoit (3) , S. Binet (3) , C. Bourdarios (3) , C. de La Taille (3) , J.B. de Vivie de Regie (3) , L. Duflot (3) , M. Escalier (3) , L. Fayard (3) , D. Fournier (3) , J.-F. Grivaz (3) , S. Henrot-Versillé (3) , J. Hrivnac (3) , L. Iconomidou-Fayard (3) , J. Idarraga (3) , M. Kado (3) , N. Lorenzo Martinez (3) , A. Lounis (3) , N. Makovec (3) , P. Matricon (3) , F. Niedercorn (3) , L. Poggioli (3) , P. Puzo (3) , A. Renaud (3) , D. Rousseau (3) , G. Rybkin (3) , J.B. Sauvan (3) , J. Schaarschmidt (3) , A.C. Schaffer (3) , E. Scifo (3) , L. Serin (3) , S. Simion (3) , R. Tanaka (3) , M. Teinturier (3) , J.J. Veillet (3) , I. Vukotic (3) , F. Wicek (3) , D. Zerwas (3) , Zhiqing Zhang (3) , D. Boumediene (4) , Emmanuel Busato (4) , D. Calvet (4) , S. Calvet (4) , Reina Coromoto Camacho Toro (4) , Diane Cinca (4) , J. Donini (4) , R. Febbraro (4) , N. Ghodbane (4) , C. Guicheney (4) , H. Liao (4) , D. Pallin (4) , Daniela Paredes Hernández (4) , F. Podlyski (4) , C. Santoni (4) , L. P. Says (4) , F. Vazeille (4) , L. Aperio Bella (5) , B. Aubert (5) , N. Berger (5) , J. Colas , M. Delmastro (5) , L. Di Ciaccio (5) , T.K.O. Doan (5) , S. Elles (5) , C. Goy (5) , L. Helary (5) , T. Hryn'Ova (5) , A. Jérémie (5) , S. Jézéquel (5) , M. Kataoka (5) , J. Labbe (5) , R. Lafaye (5) , J. Leveque (5) , V.P. Lombardo (5) , N. Massol (5) , P. Perrodo (5) , E. Petit (5) , H. Przysiezniak (5) , E. Richter-Was (5) , G. Sauvage (5) , E. Sauvan (5) , M. Schwoerer (5) , T. Todorov (5) , D. Tsionou (5) , I. Wingerter-Seez (5) , R. Zitoun (5) , Y. Zolnierowski (5)
G. Aad
E. Cogneras
E. Augé
D. Rousseau
D. Zerwas
  • Fonction : Auteur
  • PersonId : 842996
Zhiqing Zhang
  • Fonction : Auteur
  • PersonId : 829631
N. Berger
J. Colas
  • Fonction : Auteur
C. Goy
T. Hryn'Ova

Résumé

A measurement is reported of the production cross section of top-quark pairs in proton-proton collisions at a center-of-mass energy of 7 TeV recorded with the ATLAS detector at the LHC. Candidate events have a signature consistent with containing two isolated leptons, large missing transverse momentum, and at least two jets. Using a data sample corresponding to an integrated luminosity of 0.70 fb^-1, a t-tbar production cross section sigmattbar=176 +/-5 (stat) +14 -11 (syst) +/- 8 (lum.) pb is measured for an assumed top-quark mass of m_t = 172.5 GeV.

Dates et versions

in2p3-00682070 , version 1 (23-03-2012)

Identifiants

Citer

G. Aad, S. Albrand, M.L. Andrieux, Q. Buat, B. Clement, et al.. Measurement of the cross section for top-quark pair production in pp collisions at sqrt(s) = 7 TeV with the ATLAS detector using final states with two high-pt leptons. Journal of High Energy Physics, 2012, 05, pp.059. ⟨10.1007/JHEP05(2012)059⟩. ⟨in2p3-00682070⟩
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