Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/103791
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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 1550-2368 |
Statement of Responsibility: | 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. |
DOI: | 10.1103/PhysRevD.94.032006 |
Published version: | http://dx.doi.org/10.1103/physrevd.94.032006 |
Appears in Collections: | Aurora harvest 7 Physics publications |
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hdl_103791.pdf | Published version | 1.24 MB | Adobe PDF | View/Open |
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