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Measurement of the charge asymmetry in top-quark pair production in association with a photon with the ATLAS experiment
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ATLAS Collaboration (Including: Becker, K., Guilloton, Eva, Harrison, P. F., Jones, E., Kerridge, B., Martin, T. A., Mitra, A., Morgenstern, S., Murray, W. J., Roberts, B. A. and Vladimirov, V. E.). (2023) Measurement of the charge asymmetry in top-quark pair production in association with a photon with the ATLAS experiment. Physics Letters B, 843 . 137848. doi:10.1016/j.physletb.2023.137848 ISSN 0370-2693.
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Official URL: https://doi.org/10.1016/j.physletb.2023.137848
Abstract
A measurement of the charge asymmetry in top-quark pair (
) production in association with a photon is presented. The measurement is performed in the single-lepton
decay channel using proton–proton collision data collected with the ATLAS detector at the Large Hadron Collider at CERN at a centre-of-mass-energy of 13 TeV during the years 2015–2018, corresponding to an integrated luminosity of 139 fb−1. The charge asymmetry is obtained from the distribution of the difference of the absolute rapidities of the top quark and antiquark using a profile likelihood unfolding approach. It is measured to be
in agreement with the Standard Model expectation.
Item Type: | Journal Article | ||||||||
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||||||
Journal or Publication Title: | Physics Letters B | ||||||||
Publisher: | Elsevier Science BV | ||||||||
ISSN: | 0370-2693 | ||||||||
Official Date: | 10 August 2023 | ||||||||
Dates: |
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Volume: | 843 | ||||||||
Article Number: | 137848 | ||||||||
DOI: | 10.1016/j.physletb.2023.137848 | ||||||||
Status: | Peer Reviewed | ||||||||
Publication Status: | Published | ||||||||
Access rights to Published version: | Open Access (Creative Commons) | ||||||||
Date of first compliant deposit: | 5 September 2023 | ||||||||
Date of first compliant Open Access: | 5 September 2023 |
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