Measurement of the t(t)over-bar charge asymmetry in events with highly Lorentz-boosted in collisions at √<i>s</i>=13 TeV
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Author(s)
Type
Journal Article
Abstract
The measurement of the charge asymmetry in top quark pair events with highly Lorentz-boosted top quarks decaying to a single lepton and jets is presented. The analysis is performed using proton-proton collisions at √s = 13 TeV with the CMS detector at the LHC and corresponding to an integrated luminosity of 138 fb−1 . The selection is optimized for top quarks produced with large Lorentz boosts, resulting in nonisolated leptons and overlapping jets. The top quark charge asymmetry is measured for events with a t¯t invariant mass larger than 750 GeV and corrected for detector and acceptance effects using a binned maximum likelihood fit. The measured top quark charge asymmetry of (0.42+0.64−0.69 )% is in good agreement with the standard model prediction at next-to-next-to-leading order in quantum chromodynamic perturbation theory with next-to-leading-order electroweak corrections. The result is also presented for two invariant mass ranges, 750–900 and >900 GeV.
Date Issued
2023-11-10
Date Acceptance
2024-01-16
Citation
Physics Letters B: Nuclear Physics and Particle Physics, 2023, 846
ISSN
0370-2693
Publisher
Elsevier
Journal / Book Title
Physics Letters B: Nuclear Physics and Particle Physics
Volume
846
Copyright Statement
© 2023 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license
(http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP 3 .
(http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP 3 .
License URL
Subjects
Astronomy & Astrophysics
CMS
Physical Sciences
Physics
Physics, Nuclear
Physics, Particles & Fields
Science & Technology
Top quark
Publication Status
Published
Article Number
ARTN 137703