Measurement of the CP properties of Higgs boson interactions with 𝜏-leptons with the ATLAS detector
A study of the charge conjugation and parity (CP) properties of the interaction between the Higgs boson and tau-leptons is presented. The study is based on a measurement of CP-sensitive angular observables defined by the visible decay products of tau-leptons produced in Higgs boson decays. The analy...
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| Hauptverfasser: | , , , , , , , , , , , , , , , , , , , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
04 July 2023
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| In: |
The European physical journal. C, Particles and fields
Year: 2023, Jahrgang: 83, Heft: 7, Pages: 1-30 |
| ISSN: | 1434-6052 |
| DOI: | 10.1140/epjc/s10052-023-11583-y |
| Online-Zugang: | Verlag, kostenfrei, Volltext: https://doi.org/10.1140/epjc/s10052-023-11583-y
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| Verfasserangaben: | ATLAS Collaboration* |
MARC
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| 245 | 1 | 0 | |a Measurement of the CP properties of Higgs boson interactions with -leptons with the ATLAS detector |c ATLAS Collaboration* |
| 246 | 3 | 3 | |a Measurement of the CP properties of Higgs boson interactions with tau-leptons with the ATLAS detector |
| 264 | 1 | |c 04 July 2023 | |
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| 500 | |a *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, 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, J. Zinsser [und sehr viele weitere Personen] | ||
| 500 | |a Gesehen am 15.02.2024 | ||
| 520 | |a A study of the charge conjugation and parity (CP) properties of the interaction between the Higgs boson and tau-leptons is presented. The study is based on a measurement of CP-sensitive angular observables defined by the visible decay products of tau-leptons produced in Higgs boson decays. The analysis uses 139 fb-1 of proton-proton collision data recorded at a centre-of-mass energy of √s = 13 TeV with the ATLAS detector at the Large Hadron Collider. Contributions from CP-violating interactions between the Higgs boson and tau-leptons are described by a single mixing angle parameter phi tau in the generalised Yukawa interaction. Without constraining the H → tau tau signal strength to its expected value under the Standard Model hypothesis, the mixing angle phi tau is measured to be 9° +- 16°, with an expected value of 0° +- 28° at the 68% confidence level. The pure CP-odd hypothesis is disfavoured at a level of 3.4 standard deviations. The results are compatible with the predictions for the Higgs boson in the Standard Model. | ||
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