Search for Heavy Resonances Decaying into a Photon and a Hadronically Decaying Higgs Boson in pp Collisions at ffisffi p =13 TeV with the ATLAS Detector Aad, G. Aguilar Saavedra, Juan Antonio Atlas Collaboration This 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 ffisffiffi p ¼ 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 ðH → b¯bÞ 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. 2021-02-16T12:30:32Z 2021-02-16T12:30:32Z 2020-12-18 info:eu-repo/semantics/article Baringer, P. S., Murray, M. J., & CMS Collaboration. (2015). Search for long-lived neutral particles decaying to quark-antiquark pairs in proton-proton collisions at ffisffi s√= 8 TeV. [DOI: 10.1103/PhysRevLett.125.251802] http://hdl.handle.net/10481/66615 10.1103/PhysRevLett.125.251802 eng http://creativecommons.org/licenses/by/3.0/es/ info:eu-repo/semantics/openAccess Atribución 3.0 España