Probing the CP nature of the top-Higgs Yukawa coupling in tt[bar]H and t H events with H → bb[bar] decays using the ATLAS detector at the LHC
The CP properties of the coupling between the Higgs boson and the top quark are investigated using 139 fb−1 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 e...
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| Hauptverfasser: | , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Körperschaft: | |
| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
February 2024
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| In: |
Physics letters
Year: 2024, Jahrgang: 849, Pages: [1]-25 |
| ISSN: | 1873-2445 |
| DOI: | 10.1016/j.physletb.2024.138469 |
| Online-Zugang: | Verlag, kostenfrei, Volltext: https://doi.org/10.1016/j.physletb.2024.138469 Verlag, kostenfrei, Volltext: https://www.sciencedirect.com/science/article/pii/S0370269324000285 
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| Verfasserangaben: | The ATLAS Collaboration |
MARC
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| 245 | 1 | 0 | |a Probing the CP nature of the top-Higgs Yukawa coupling in tt[bar]H and t H events with H → bb[bar] decays using the ATLAS detector at the LHC |c The ATLAS Collaboration |
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| 500 | |a The ATLAS Collaboration: G. Aad, L.M. Baltes, F. Bartels, F.L. Castillo, M.M. Czurylo, F. del Rio, S.J. Dittmeier, M. Dunford, S. Franchino, M. Klassen, A. Krishnan, T. Mkrtchyan, P.S. Ott, D.F. Rassloff, S. Rodriguez Bosca, C. Sauer, A. Schoening, H-C. Schultz-Coulon, V. Sothilingam, R. Stamen, P. Starovoitov, L. Vigani, S.M. Weber, M. Wessels, X. Yue, J. Zinsser und 2876 weitere | ||
| 500 | |a Im Titel steht der zweite Buchstabe t und b mit einem Oberstrich | ||
| 500 | |a Gesehen am 20.11.2024 | ||
| 520 | |a The CP properties of the coupling between the Higgs boson and the top quark are investigated using 139 fb−1 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. Multivariate techniques are used to select regions enriched in tt¯H and tH events, where dedicated CP-sensitive observables are exploited. In an extension of the Standard Model (SM) with a CP-odd admixture in the top-Higgs Yukawa coupling, the mixing angle between CP-even and CP-odd couplings is measured to be α=11−73∘∘+52∘, compatible with the SM prediction corresponding to α=0. | ||
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