Combination of inclusive and differential tt̅ charge asymmetry measurements using ATLAS and CMS data at √s = 7 and 8 TeV

DOI
Publisher DOI
Abstract
This paper presents combinations of inclusive and differential measurements of the charge asymmetry (AC) in top quark pair (tt̅ ) 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⁻¹ for each experiment, respectively. The resulting combined LHC measurements of the inclusive charge asymmetry are ALHC7C = 0.0050±0.007 (stat) ± 0.006 (syst) at 7 TeV and ALHC8
C = 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 tt̅ system at
8 TeV, are consistent with the respective standard model predictions.
Date Issued
2018-04
Publication Type
Article
Subject(s)
Language(s)
en
Author(s)
Rimoldi, Marco
Mullier, Geoffrey
Miucci, Antonio
Merlassino, Claudia
Meloni, Federico
Ereditato, Antonio
Additional Credits
Journal
Journal of High Energy Physics
Publisher
Springer
ISSN
1029-8479
Access(Rights)
open.access
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