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Article
Report number arXiv:2303.05974 ; CERN-EP-2022-208
Title Probing the CP nature of the top-Higgs Yukawa coupling in tt¯H and tH events with Hbb¯ decays using the ATLAS detector at the LHC
Author(s) ATLAS Collaboration  Mostrar todos los 2902 autores
Corporate Author(s) ATLAS Collaboration
Publication 2024-01-18
Imprint 13 Mar 2023
Number of pages 41
Note 41 pages, author list starting at page 24, 3 figures, 4 tables, published by Phys. Lett. B. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HIGG-2020-03
In: Phys. Lett. B 849 (2024) 138469
DOI 10.1016/j.physletb.2024.138469 (publication)
Subject category Particle Physics - Experiment
Accelerator/Facility, Experiment CERN LHC ; ATLAS
Free keywords Higgs physics ; CP violation ; experimental results
Abstract The CP properties of the coupling between the Higgs boson and the top quark are investigated with 139 fb1 of proton-proton collision data recorded by the ATLAS experiment at the LHC at a centre-of-mass energy of s=13 TeV. The CP structure of the top quark-Higgs boson Yukawa coupling is probed in events with a Higgs boson decaying into a pair of b-quarks and produced in association with either a pair of top quarks, tt¯H, or a single top quark, tH. Events containing one or two electrons or muons are used for the measurement. In an extension of the Standard Model with a CP-odd admixture to the top-Higgs Yukawa coupling, the mixing angle between CP-even and CP-odd couplings is measured to be α=1173+52.
Related document supersedes: ATLAS-CONF-2022-016
Copyright/License Publication: (License: CC BY 4.0)
publicationP: © 2024-2025 The Author(s)
Preprint: © 2022-2025 CERN (License: CC-BY-4.0)



Corresponding record in: Inspire
Email contact: tatjana.lenz@cern.ch


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