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Test of CP invariance in higgs boson vector-boson-fusion production using the H → γ γ channel with the ATLAS detector

A test of 𝐶⁢𝑃 invariance in Higgs boson production via vector-boson fusion has been performed in the 𝐻 →𝛾⁢𝛾 channel using 139  fb−1 of proton-proton collision data at √𝑠 =13  TeV collected by the ATLAS detector at the LHC. The optimal observable method is used to probe the 𝐶⁢𝑃 structure of interacti...

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Hauptverfasser: Aad, Georges (VerfasserIn) , Baltes, Lisa Marie (VerfasserIn) , Bartels, Falk (VerfasserIn) , Castillo, Florencia Luciana (VerfasserIn) , Czurylo, Marta (VerfasserIn) , Rio, Fernando del (VerfasserIn) , Dittmeier, Sebastian (VerfasserIn) , Dunford, Monica (VerfasserIn) , Franchino, Silvia (VerfasserIn) , Klassen, Martin (VerfasserIn) , Mkrtchyan, Tigran (VerfasserIn) , Ott, Philipp (VerfasserIn) , Rassloff, Damir Fabrice (VerfasserIn) , Rodriguez Bosca, Sergi (VerfasserIn) , Sauer, Christof (VerfasserIn) , Schöning, André (VerfasserIn) , Schultz-Coulon, Hans-Christian (VerfasserIn) , Sothilingam, Varsiha (VerfasserIn) , Stamen, Rainer (VerfasserIn) , Starovoitov, Pavel (VerfasserIn) , Vigani, Luigi (VerfasserIn) , Weber, Sebastian (VerfasserIn) , Wessels, Martin (VerfasserIn) , Zinßer, Joachim (VerfasserIn)
Körperschaft: ATLAS Collaboration (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 2023
In: Physical review letters
Year: 2023, Jahrgang: 131, Heft: 6, Pages: 1-23
ISSN:1079-7114
DOI:10.1103/PhysRevLett.131.061802
Online-Zugang:Verlag, kostenfrei, Volltext: https://doi.org/10.1103/PhysRevLett.131.061802
Verlag, kostenfrei, Volltext: https://link.aps.org/doi/10.1103/PhysRevLett.131.061802
Volltext
Verfasserangaben:G. Aad et al. (ATLAS Collaboration*)
Beschreibung
Zusammenfassung:A test of 𝐶⁢𝑃 invariance in Higgs boson production via vector-boson fusion has been performed in the 𝐻 →𝛾⁢𝛾 channel using 139  fb−1 of proton-proton collision data at √𝑠 =13  TeV collected by the ATLAS detector at the LHC. The optimal observable method is used to probe the 𝐶⁢𝑃 structure of interactions between the Higgs boson and electroweak gauge bosons, as described by an effective field theory. No sign of 𝐶⁢𝑃 violation is observed in the data. Constraints are set on the parameters describing the strength of the 𝐶⁢𝑃-odd component in the coupling between the Higgs boson and the electroweak gauge bosons in two effective field theory bases: ˜𝑑 in the HISZ basis and 𝑐𝐻⁡ ˜ 𝑊 in the Warsaw basis. The results presented are the most stringent constraints on 𝐶⁢𝑃 violation in the coupling between Higgs and weak bosons. The 95% C.L. constraint on ˜𝑑 is derived for the first time and the 95% C.L. constraint on 𝑐𝐻⁡ ˜𝑊 has been improved by a factor of 5 compared to the previous measurement.
Beschreibung:Veröffentlicht: 7. August 2023
*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 2908 weitere Personen]
Gesehen am 03.07.2025
Beschreibung:Online Resource
ISSN:1079-7114
DOI:10.1103/PhysRevLett.131.061802

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