Aad, G.Abajyan, T.Abbott, B.Abdallah, J.Khalek, S. AbdelAbdinov, O.Aben, R.Namasivayam, HarisankarIzen, Joseph M.Lou, XinchouReeves, KendallWong, Wei-ChengHaleem, M.ATLAS Collaboration2014-05-292014-05-292014-02-252014-02-252013-11-271029-8479http://hdl.handle.net/10735.1/3548This paper presents a measurement of the top quark pair (tt̅) production charge asymmetry A_C using 4.7 fb−1 of proton-proton collisions at a centre-of-mass energy √s̅ = 7 TeV collected by the ATLAS detector at the LHC. A tt̅ -enriched sample of events with a single lepton (electron or muon), missing transverse momentum and at least four high transverse momentum jets, of which at least one is tagged as coming from a b-quark, is selected. A likelihood fit is used to reconstruct the tt̅ event kinematics. A Bayesian unfolding procedure is employed to estimate A_C at the parton-level. The measured value of the tt̅ production charge asymmetry is A_C = 0.006 ± 0.010, where the uncertainty includes both the statistical and the systematic components. Differential A_C measurements as a function of the invariant mass, the rapidity and the transverse momentum of the tt̅ system are also presented. In addition, A_C is measured for a subset of events with large tt̅ velocity, where physics beyond the Standard Model could contribute. All measurements are consistent with the Standard Model predictions.en-USCC BY 4.0 (Attribution)©2014 CERN, for the ATLAS Collaborationhttp://creativecommons.org/licenses/by/4.0/Hadrons--ScatteringTransverse momentumLarge Hadron Collider (France and Switzerland)Jets (Nuclear physics)TextAad, G., T. Aba jyan, B. Abbott, et al., 2014. "Measurement of the top quark pair production charge asymmetry in proton-proton collisions at √s̅ = 7 TeV using the ATLAS detector" Journal of High Energy Physics 2(107), doi:10.1007/JHEP02(2014)1072107