Электронный каталог

Статья

Aad, G.
Measurement of the V H, H *> *t*t Process with the ATLAS Detector at 13 TeV / G.Aad, F.Ahmadov, I.N.Aleksandrov, V.A.Bednyakov, I.R.Boyko, G.A.Chelkov, A.Cheplakov, M.V.Chizhov, D.V.Dedovich, M.Demichev, 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.Vasyukov, I.Yeletskikh, A.Zhemchugov, N.I.Zimine, Y.Kulchitsky, [ATLAS Collab.] // Physics Letters B [Electronic resource]. – 2024. – Vol. 855. – P. 138817. – URL: https://doi.org/10.1016/j.physletb.2024.138817. – Bibliogr.: 82.

A measurement of the Standard Model Higgs boson produced in association with a W or Z boson and decaying into a pair of *t-leptons is presented. This search is based on proton-proton collision data collected at *%s = 13 TeV by the ATLAS experiment at the LHC corresponding to an integrated luminosity of 140 fb&sup(−1). For the Higgs boson candidate, only final states with at least one *t-lepton decaying hadronically (*t *> hadrons + *n*t ) are considered. For the vector bosons, only leptonic decay channels are considered: 𝑍 *> ll and 𝑊 *> l*nl , with l = e, *m. An excess of events over the expected background is found with an observed (expected) significance of 4.2 (3.6) standard deviations, providing evidence of the Higgs boson produced in association with a vector boson and decaying into a pair of *t-leptons. The ratio of the measured cross-section to the Standard Model prediction is *m&sup(*t*t)&sub(VH) = 1.28&sup(+0.30)&sub(−0.29) (stat.) &sub(+0.25)&sub(−0.21) (syst.). This result represents the most accurate measurement of the 𝑉𝐻(*t*t) process achieved to date



Спец.(статьи,препринты) = С 346.2в - Взаимодействие протонов с протонами
Спец.(статьи,препринты) = С 346.6е1 - Рождение прямых лептонов в соударениях элементарных частиц. Новые лептоны. Тау- лептон
ОИЯИ = ОИЯИ (JINR)2024