Measurements of charge and CP asymmetries in <i>b</i>-hadron decays using top-quark events collected by the ATLAS detector in <i>pp</i> collisions at √s=8 TeV



Aaboud, M, Aad, G, Abbott, B, Abdallah, J, Abdinov, O, Abeloos, B, AbouZeid, OS, Abraham, NL, Abramowicz, H, Abreu, H
et al (show 2846 more authors) (2017) Measurements of charge and CP asymmetries in <i>b</i>-hadron decays using top-quark events collected by the ATLAS detector in <i>pp</i> collisions at √s=8 TeV. JOURNAL OF HIGH ENERGY PHYSICS, 02 (2). 071-.

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Abstract

Same- and opposite-sign charge asymmetries are measured in lepton+jets $t\bar{t}$ events in which a $b$-hadron decays semileptonically to a soft muon, using data corresponding to an integrated luminosity of 20.3 fb$^{-1}$ from proton--proton collisions at a centre-of-mass energy of $\sqrt{s}=8$ TeV collected with the ATLAS detector at the Large Hadron Collider at CERN. The charge asymmetries are based on the charge of the lepton from the top-quark decay and the charge of the soft muon from the semileptonic decay of a $b$-hadron and are measured in a fiducial region corresponding to the experimental acceptance. Four CP asymmetries (one mixing and three direct) are measured and are found to be compatible with zero and consistent with the Standard Model.

Item Type: Article
Additional Information: 47 pages in total, author list starting page 31, 4 figures, 7 tables, submitted to JHEP, All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/TOPQ-2016-07/
Uncontrolled Keywords: Hadron-Hadron scattering (experiments)
Depositing User: Symplectic Admin
Date Deposited: 16 Mar 2017 11:41
Last Modified: 15 Oct 2023 11:37
DOI: 10.1007/JHEP02(2017)071
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3006294