TY  - JOUR
T1  - Measurement of the charge asymmetry in top quark pair production in pp collisions at √s=7 TeV using the ATLAS detector
JF  - The European Physical Journal C
N2  - A measurement of the top-antitop production charge asymmetry A C 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 t\(\overline t\) event topology. After background subtraction, a Bayesian unfolding procedure is performed to correct for acceptance and detector effects. The measured value of A\(_C\) is AC=−0.019±0.028 (stat.)±0.024 (syst.), consistent with the prediction from the MC@NLO Monte Carlo generator of A\(_C\) =0.006±0.002. Measurements of A\(_C\) in two ranges of invariant mass of the top-antitop pair are also shown.
KW  - jet multiplicity
KW  - B-tagged jet
KW  - systematic uncertainty
KW  - jet energy resolution
KW  - top quark masse
KW  - muon channel
KW  - jet scale energy
KW  - light quark jet
KW  - heavy flavour
KW  - single top production
KW  - single top event
KW  - fake lepton
KW  - top quark pair
KW  - multijet background
KW  - JES
Y1  - 2012
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-128904
VL  - 72
IS  - 2039
ER  -