Buchumschlag

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...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
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: 04 July 2023
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
Volltext
Verfasserangaben:ATLAS Collaboration*
Beschreibung
Zusammenfassung: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.
Beschreibung:*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]
Gesehen am 15.02.2024
Beschreibung:Online Resource
ISSN:1434-6052
DOI:10.1140/epjc/s10052-023-11583-y

Ähnliche Einträge