Электронный каталог

Статья

Aad, G.
Measurement of the CP Properties of Higgs Boson Interactions with *t-Leptons with the ATLAS Detector / G.Aad, F.Ahmadov, I.N.Aleksandrov, V.A.Bednyakov, I.R.Boyko, I.A.Budagov, G.A.Chelkov, A.Cheplakov, M.V.Chizhov, D.V.Dedovich, M.Demichev, A.Gongadze, M.I.Gostkin, N.Huseynov, S.N.Karpov, Z.M.Karpova, U.Kruchonak, V.Kukhtin, Y.Kulchitsky, E.Ladygin, V.Lyubushkin, T.Lyubushkina, S.Malyukov, M.Mineev, E.Plotnikova, I.N.Potrap, N.A.Rusakovich, M.Shiyakova, A.Soloshenko, S.Turchikhin, T.Turtuvshin, I.Yeletskikh, A.Zhemchugov, N.I.Zimine, [ATLAS Collab.] // The European Physical Journal C [Electronic resource]. – 2023. – Vol.83, No.7. – P.563. – URL: https://doi.org/10.1140/epjc/s10052-023-11583-y. – Bibliogr.:77.

A study of the charge conjugation and parity () properties of the interaction between the Higgs boson and -leptons is presented. The study is based on a measurement of -sensitive angular observables defined by the visible decay products of -leptons produced in Higgs boson decays. The analysis uses 139 fb of proton–proton collision data recorded at a centre-of-mass energy of TeV with the ATLAS detector at the Large Hadron Collider. Contributions from -violating interactions between the Higgs boson and -leptons are described by a single mixing angle parameter in the generalised Yukawa interaction. Without constraining the signal strength to its expected value under the Standard Model hypothesis, the mixing angle is measured to be , with an expected value of at the 68% confidence level. The pure -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.



ОИЯИ = ОИЯИ (JINR)2023
Спец.(статьи,препринты) = С 346.2в - Взаимодействие протонов с протонами
Спец.(статьи,препринты) = С 346.6е2 - Промежуточные бозоны