Khachatryan, V;
Sirunyan, AM;
Tumasyan, A;
Adam, W;
Asilar, E;
Bergauer, T;
Brandstetter, J;
... Woods, N; + view all
(2016)
Inclusive and differential measurements of the t(t)over-bar charge asymmetry in pp collisions at root s=8 TeV.
Physics Letters B
, 757
pp. 154-179.
10.1016/j.physletb.2016.03.060.
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Abstract
The charge asymmetry is measured in proton–proton collisions at a centre-of-mass energy of . The data, collected with the CMS experiment at the LHC, correspond to an integrated luminosity of 19.7 fb−1. Selected events contain an electron or a muon and four or more jets, where at least one jet is identified as originating from b-quark hadronization. The inclusive charge asymmetry is found to be . In addition, differential charge asymmetries as a function of rapidity, transverse momentum, and invariant mass of the system are studied. For the first time at the LHC, the measurements are also performed in a reduced fiducial phase space of top quark pair production, with an integrated result of . All measurements are consistent within two standard deviations with zero asymmetry as well as with the predictions of the standard model.
Type: | Article |
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Title: | Inclusive and differential measurements of the t(t)over-bar charge asymmetry in pp collisions at root s=8 TeV |
Open access status: | An open access version is available from UCL Discovery |
DOI: | 10.1016/j.physletb.2016.03.060 |
Publisher version: | https://doi.org/10.1016/j.physletb.2016.03.060 |
Language: | English |
Additional information: | This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
Keywords: | Science & Technology, Physical Sciences, Astronomy & Astrophysics, Physics, Nuclear, Physics, Particles & Fields, Physics, CMS, Top quark, Charge asymmetry, QUARK PAIR PRODUCTION, PARTON DISTRIBUTIONS, LHC |
UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences |
URI: | https://discovery.ucl.ac.uk/id/eprint/10070429 |
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