Электронный каталог

Статья

Aad, G.
Constraint on the Total Width of the Higgs Boson from Higgs Boson and Gour-Top-Quark Measurements in pp Collisions at *%s = 13 TeV with the ATLAS Detector / G.Aad, F.Ahmadov, I.N.Aleksandrov, V.A.Bednyakov, I.R.Boyko, G.Chelkov, A.Cheplakov, M.V.Chizhov, D.V.Dedovich, M.Demichev, A.R.Didenko, M.I.Gostkin, S.N.Karpov, Z.M.Karpova, U.Kruchonak, V.Kukhtin, E.Ladygin, V.Lyubushkin, T.Lyubushkina, S.Malyukov, M.Mineev, E.Plotnikova, I.N.Potrap, N.A.Rusakovich, M.Shiyakova, A.Soloshenko, T.Turtuvshin, A.Tropina, A.Vasyukov, I.Yeletskikh, A.Zhemchugov, N.I.Zimine, Y.Kulchitsky, [ATLAS Collab.] // Physics Letters B [Electronic resource]. – 2025. – Vol. 861. – P. 139277. – URL: https://doi.org/10.1016/j.physletb.2025.139277. – Bibliogr.: 38.

This Letter presents a constraint on the total width of the Higgs boson (*G&sub(𝐻) ) using a combined measurement of on-shell Higgs boson production and the production of four top quarks, which involves contributions from oshell Higgs boson-mediated processes. This method relies on the assumption that the tree-level Higgs-top Yukawa coupling strength is the same for on-shell and o-shell Higgs boson production processes, thereby avoiding any assumptions about the relationship between on-shell and o-shell gluon fusion Higgs production rates, which were central to previous measurements. The result is based on up to 140 fb&sup(−1) of proton–proton collisions at a centre-of-mass energy of *%𝑠 = 13 TeV collected with the ATLAS detector at the Large Hadron Collider. The observed (expected) 95% condence level upper limit on *G&sub(𝐻) is 450 MeV (75 MeV). Additionally, considering the constraint on the Higgs-top Yukawa coupling from loop-induced Higgs boson production and decay processes further yields an observed (expected) upper limit of 160 MeV (55 MeV).



Спец.(статьи,препринты) = С 346.2в - Взаимодействие протонов с протонами
Спец.(статьи,препринты) = С 346.6д1 - Чармоний, боттомоний, топ-кварк. Очарованные частицы и др. резонансы из тяжелых кварков
ОИЯИ = ОИЯИ (JINR)2025