Home > Research > Publications & Outputs > Measurement of the charge asymmetry in top quar...

Electronic data

  • art%3A10.1140%2Fepjc%2Fs10052-012-2039-5

    Rights statement: This article is distributed under the terms of the Creative Commons Attribution License which permits any use, distribution, and reproduction in any medium, provided the original author(s) and the source are credited.

    Final published version, 1.66 MB, PDF document

    Available under license: CC BY

Links

Text available via DOI:

View graph of relations

Measurement of the charge asymmetry in top quark pair production in pp collisions at s√=7 TeV using the ATLAS detector

Research output: Contribution to Journal/MagazineJournal articlepeer-review

Published
  • The ATLAS collaboration
Close
Article number2039
<mark>Journal publication date</mark>06/2012
<mark>Journal</mark>European Physical Journal C: Particles and Fields
Issue number6
Volume72
Number of pages27
Publication StatusPublished
<mark>Original language</mark>English

Abstract

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 tt¯ 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.

Bibliographic note

This article is distributed under the terms of the Creative Commons Attribution License which permits any use, distribution, and reproduction in any medium, provided the original author(s) and the source are credited.