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Type: Journal article
Title: Measurements of the charge asymmetry in top-quark pair production in the dilepton final state at √s =8 TeV with the ATLAS detector
Other Titles: Measurements of the charge asymmetry in top-quark pair production in the dilepton final state at root s =8 TeV with the ATLAS detector
Author: Aad, G.
ATLAS Collaboration
Abbott, B.
Abdallah, J.
Abdinov, O.
Abeloos, B.
Aben, R.
Abolins, M.
Abouzeid, O.
Abraham, N.
Abramowicz, H.
Abreu, H.
Abreu, R.
Abulaiti, Y.
Acharya, B.
Adamczyk, L.
Adams, D.
Adelman, J.
Adomeit, S.
Adye, T.
et al.
Citation: Physical Review D - Particles, Fields, Gravitation, and Cosmology, 2016; 94(3):032006-1-032006-17
Publisher: American Physical Society
Issue Date: 2016
ISSN: 1550-7998
Statement of
G. Aad ... P. Jackson ... L. Lee ... A. Petridis ... M. J. White ... et al. (ATLAS Collaboration)
Abstract: Measurements of the top-antitop quark pair production charge asymmetry in the dilepton channel, characterized by two high-pT leptons (electrons or muons), are presented using data corresponding to an integrated luminosity of 20.3  fb−1 from pp collisions at a center-of-mass energy s√=8  TeV collected with the ATLAS detector at the Large Hadron Collider at CERN. Inclusive and differential measurements as a function of the invariant mass, transverse momentum, and longitudinal boost of the tt¯ system are performed both in the full phase space and in a fiducial phase space closely matching the detector acceptance. Two observables are studied: AℓℓC based on the selected leptons and Att¯C based on the reconstructed tt¯ final state. The inclusive asymmetries are measured in the full phase space to be AℓℓC=0.008±0.006 and Att¯C=0.021±0.016, which are in agreement with the Standard Model predictions of AℓℓC=0.0064±0.0003 and Att¯C=0.0111±0.0004.
Description: Published 22 August 2016
Rights: © 2016 CERN, for the ATLAS Collaboration. Published by the American Physical Society under the terms of the Creative Commons Attribution 3.0 License.
RMID: 0030054937
DOI: 10.1103/PhysRevD.94.032006
Appears in Collections:Physics publications

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