TY - JOUR
T1 - Measurement of the charge asymmetry in top quark pair production in pp collisions at √s = 7 TeV using the ATLAS detector
AU - Aad, G.
AU - Abbott, B.
AU - Abdallah, J.
AU - Abdelalim, A. A.
AU - Kabana, S.
AU - ATLAS Collaboration
N1 - Publisher Copyright:
© 2012, CERN for the benefit of the ATLAS collaboration.
PY - 2012/6/15
Y1 - 2012/6/15
N2 - A measurement of the top-antitop production charge asymmetry AC is presented using data corresponding to an integrated luminosity of 1.04 fb−1 of pp collisions at √s = 7 TeV collected by the ATLAS detector at the LHC. Events are selected with a single lepton (electron or muon), missing transverse momentum and at least four jets of which at least one jet is identified as coming from a b-quark. A kinematic fit is used to reconstruct the tt event topology. After background subtraction, a Bayesian unfolding procedure is performed to correct for acceptance and detector effects. The measured value of AC is AC =−0.019±0.028 (stat.)±0.024 (syst.), consistent with the prediction from the MC@NLO Monte Carlo generator of AC = 0.006±0.002. Measurements of AC in two ranges of invariant mass of the top-antitop pair are also shown.
AB - A measurement of the top-antitop production charge asymmetry AC is presented using data corresponding to an integrated luminosity of 1.04 fb−1 of pp collisions at √s = 7 TeV collected by the ATLAS detector at the LHC. Events are selected with a single lepton (electron or muon), missing transverse momentum and at least four jets of which at least one jet is identified as coming from a b-quark. A kinematic fit is used to reconstruct the tt event topology. After background subtraction, a Bayesian unfolding procedure is performed to correct for acceptance and detector effects. The measured value of AC is AC =−0.019±0.028 (stat.)±0.024 (syst.), consistent with the prediction from the MC@NLO Monte Carlo generator of AC = 0.006±0.002. Measurements of AC in two ranges of invariant mass of the top-antitop pair are also shown.
UR - https://www.scopus.com/pages/publications/84864420747
U2 - 10.1140/epjc/s10052-012-2039-5
DO - 10.1140/epjc/s10052-012-2039-5
M3 - Article
AN - SCOPUS:84864420747
SN - 1434-6044
VL - 72
JO - European Physical Journal C
JF - European Physical Journal C
IS - 6
M1 - 2039
ER -