Measurement of the charge asymmetry in top-quark pair production in the lepton-plus-jets final state in pp collision data at $$\sqrt{s}=8\,\mathrm TeV{}$$ s = 8 T e V with the ATLAS detector

This paper reports inclusive and differential measurements of the $$t\bar{t}$$ charge asymmetry $$A_{\text {C}}$$ in $$20.3~{\mathrm{fb}^{-1}}$$ of $$\sqrt{s} = 8~\mathrm TeV{}$$ $$pp$$ collisions recorded by the ATLAS experiment at the Large Hadron Collider at CERN. Three differential measurements are performed as a function of the invariant mass, transverse momentum and longitudinal boost of the $$t\bar{t}$$ system. The $$t\bar{t}$$ pairs are selected in the single-lepton channels (e or $$\mu $$ ) with at least four jets, and a likelihood fit is used to reconstruct the $$t\bar{t}$$ event kinematics. A Bayesian unfolding procedure is performed to infer the asymmetry at parton level from the observed data distribution. The inclusive $$t\bar{t}$$ charge asymmetry is measured to be $$A_{\text {C}}{} = 0.009 \pm 0.005$$ (stat. $$+$$ syst.). The inclusive and differential measurements are compatible with the values predicted by the Standard Model.