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Updated: Apr 15, 2026

Setting Limits on Supersymmetry Using Simplified Models
Published on: November 15, 2013
Measurement of the charge asymmetry in top quark pair production in pp collisions at [Formula: see text] using the
1Fakultät für Mathematik und Physik, Albert-Ludwigs-Universität, Freiburg i.Br., Germany.
Abstract:
A measurement of the top-antitop production charge asymmetry A is presented using data corresponding to an integrated luminosity of 1.04 fb-1 of pp collisions at [Formula: see text] 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 [Formula: see text] event topology. After background subtraction, a Bayesian unfolding procedure is performed to correct for acceptance and detector effects. The measured value of A is [Formula: see text], consistent with the prediction from the MC@NLO Monte Carlo generator of A =0.006±0.002. Measurements of A in two ranges of invariant mass of the top-antitop pair are also shown.
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