Combination of inclusive and differential t[¯ over t] charge asymmetry measurements using ATLAS and CMS data at √s=7 and 8 TeV

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Abercrombie, Daniel Robert; Allen, Brandon Leigh; Azzolini, Virginia; Barbieri, Richard Alexander; Baty, Austin Alan; ... Show more
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Abstract
This paper presents combinations of inclusive and differential measurements of the charge asymmetry (AC) in top quark pair (t[¯ over t]) events with a lepton+jets signature by the ATLAS and CMS Collaborations, using data from LHC proton-proton collisions at centre-of-mass energies of 7 and 8 TeV. The data correspond to integrated luminosities of about 5 and 20 fb[superscript −1] for each experiment, respectively. The resulting combined LHC measurements of the inclusive charge asymmetry are A[subscript C][superscript CHC7]  = 0.005 ± 0.007 (stat) ± 0.006(syst) at 7 TeV and A[subscript C][superscript CHC8]  = 0.0055 ± 0.0023 (stat) ± 0.0025 (syst) at 8 TeV. These values, as well as the combination of AC measurements as a function of the invariant mass of the t[¯ over t] system at 8 TeV, are consistent with the respective standard model predictions. Keywords: Hadron-Hadron scattering (experiments), Top physics
Date issued
2018-04
URI
http://hdl.handle.net/1721.1/119143
Department
Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Laboratory for Nuclear Science
Journal
Journal of High Energy Physics
Publisher
Springer Nature
Citation
The ATLAS collaboration, et al. “Combination of inclusive and differential t[¯ over t] charge asymmetry measurements using ATLAS and CMS data at √s=7 and 8 TeV.” Journal of High Energy Physics, vol. 2018, no. 4, Apr. 2018. © 2018 The Authors
Version: Final published version
ISSN
1029-8479
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