TY  - SER
AU  - Aad,G.
AU  - Abbott,B.
AU  - Abbott,D.C.
AU  - Aliev,M.
AU  - Kostyukhin,Vadim V.
AU  - Kuchinskaya,Olesya I.
AU  - Penzin,Maxim S.
TI  - Search for Higgs boson decays into a pair of pseudoscalar particles in the bbμμ final state with the ATLAS detector in pp collisions at √s=13 TeV
KW  - Хиггса бозон
KW  - протон-протонные столкновения
KW  - ATLAS, детектор
KW  - псевдоскалярные частицы
KW  - статьи в журналах
N1  - Библиогр.: 114 назв
N2  - This paper presents a search for decays of the Higgs boson with a mass of 125 GeV into a pair of new pseudoscalar particles, H -> aa, where one a-boson decays into a b-quark pair and the other into a muon pair. The search uses 139 fb(-1) of proton-proton collision data at a center-of-mass energy root s = 13 TeV recorded between 2015 and 2018 by the ATLAS experiment at the LHC. A narrow dimuon resonance is searched for in the invariant mass spectrum between 16 GeV and 62 GeV. The largest excess of events above the Standard Model backgrounds is observed at a dimuon invariant mass of 52 GeV and corresponds to a local (global) significance of 3.3 sigma (1.7 sigma). Upper limits at 95% confidence level are placed on the branching ratio of the Higgs boson to the bb mu mu final state, beta(H -> aa -> bb mu mu), and are in the range 0.2-4.0 x 10(-4), depending on the signal mass hypothesis
UR  - http://vital.lib.tsu.ru/vital/access/manager/Repository/koha:001004018
ER  -