Measurement of the charge asymmetry in top quark pair production in pp collisions at s√=7 TeV using the ATLAS detector
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Measurement of the charge.pdf
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1.66 MB
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Adobe PDF
Checksum (MD5)
5aa1d9e5573bc346a51998b2bd7795b9
Author(s)
Taylor, Frank E
Date Issued
June 2012
Journal
The European Physical Journal C
Publisher
Springer-Verlag
Citation
The ATLAS Collaboration et al. “Measurement of the Charge Asymmetry in Top Quark Pair Production in Pp Collisions at √s=7 TeV Using the ATLAS Detector.” The European Physical Journal C 72.6 (2012): n. pag. © 2012 CERN for the benefit of the ATLAS collaboration
Version
Final published version
Abstract
A measurement of the top-antitop production charge asymmetry A[subscript C] is presented using data corresponding to an integrated luminosity of 1.04 fb[superscript −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[bar over t] event topology. After background subtraction, a Bayesian unfolding procedure is performed to correct for acceptance and detector effects. The measured value of A[subscript C] is A[subscript C]=−0.019±0.028 (stat.)±0.024 (syst.), consistent with the prediction from the MC@NLO Monte Carlo generator of A[subscript C]=0.006±0.002. Measurements of A[subscript C] in two ranges of invariant mass of the top-antitop pair are also shown.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Terms of Use
Creative Commons Attribution 4.0 International License
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1140/epjc/s10052-012-2039-5
