%0 Journal Article
%T Search for Higgs boson decays into a pair of pseudoscalar particles in the bb μμfinal state with the ATLAS detector in pp collisions at root s=13 TeV
%A ATLAS Collaboration (Aad, G. et al
%A Aparisi Pozo, J. A.
%A Bailey, A. J.
%A Cabrera Urban, S.
%A Cardillo, F.
%A Castillo Gimenez, V.
%A Costa, M. J.
%A Didenko
%A Escobar, C.
%A Estrada Pastor, O.
%A Fiorini, L.
%A Fullana Torregrosa, E.
%A Fuster, J.
%A Garcia, C.
%A Garcia Navarro, J. E.
%A Gonzalez de la Hoz, S.
%A Gonzalvo Rodriguez, G. R.
%A Guerrero Rojas, J. G. R.
%A Higon-Rodriguez, E.
%A Lacasta, C.
%A Lozano Bahilo, J. J.
%A Mamuzic, J.
%A Marti-Garcia, S.
%A Martinez Agullo, P.
%A Miralles Lopez, M.
%A Mitsou, V. A.
%A Monsonis Romero, L.
%A Moreno Llacer, M.
%A Navarro-Gonzalez, J.
%A Poveda, J.
%A Prades Ibañez, A.
%A Ruiz-Martinez, A.
%A Sabatini, P.
%A Salt, J.
%A Sanchez Sebastian, V.
%A Sayago Galvan, I.
%A Soldevila, U.
%A Sanchez, J.
%A Torro Pastor, E.
%A Valero, A.
%A Valls Ferrer, J. A.
%A Villaplana Perez, M.
%A Vos, M.
%J Physical Review D
%D 2022
%V 105
%N 1
%I Amer Physical Soc
%@ 2470-0010
%G English
%F ATLASCollaborationAad_etal2022
%O WOS:000748662900004
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=5101), last updated on Wed, 09 Feb 2022 16:23:30 +0000
%X 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 μμfinal state, beta(H -> aa -> bb μmu), and are in the range 0.2-4.0 x 10(-4), depending on the signal mass hypothesis.
%R 10.1103/PhysRevD.105.012006
%U https://arxiv.org/abs/2110.00313
%U https://doi.org/10.1103/PhysRevD.105.012006
%P 012006-29pp