Aad G.Abbott B.Abbott D.C.Abed Abud A.Abeling K.Abhayasinghe D.K.Abidi S.H.Abouzeid O.S.Abraham N.L.Abramowicz H.Abreu H.Abulaiti Y.2021-08-032021-08-032020-12Physical Review Letters, Volume 125, Issue 2518 December 2020 Article number 25180200319007http://repositorio.unab.cl/xmlui/handle/ria/19633Indexación ScopusThis Letter presents a search for the production of new heavy resonances decaying into a Higgs boson and a photon using proton-proton collision data at s=13 TeV collected by the ATLAS detector at the LHC. The data correspond to an integrated luminosity of 139 fb-1. The analysis is performed by reconstructing hadronically decaying Higgs boson (H→bb¯) candidates as single large-radius jets. A novel algorithm using information about the jet constituents in the center-of-mass frame of the jet is implemented to identify the two b quarks in the single jet. No significant excess of events is observed above the expected background. Upper limits are set on the production cross-section times branching fraction for narrow spin-1 resonances decaying into a Higgs boson and a photon in the resonance mass range from 0.7 to 4 TeV, cross-section times branching fractions are excluded between 11.6 fb and 0.11 fb at a 95% confidence level. © 2020 CERN.enTop QuarkPartonsHiggs BosonsAlgorithmArtículo10.1103/PhysRevLett.125.251802