UNSPECIFIED (2012) Measurement of the cross section for top-quark pair production in pp collisions at s√=7TeV with the ATLAS detector using final states with two high-p T leptons. Journal of High Energy Physics, 2012 (5): 59. ISSN 1029-8479
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Abstract
A measurement is reported of the production cross section of top-quark pairs (t t¯ ) 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 t¯ production cross section σtt¯=176±5(stat.)+14−11(syst.)±8(lum.) pb is measured for an assumed top-quark mass of m t = 172.5 GeV. This measurement is in good agreement with Standard Model predictions.