Aad, G.Abbott, B.Abeling, K.Abicht, N.J.Abidi, S.H.Aboulhorma, A.Abramowicz, H.2024-03-162024-03-1620240031-90071079-7114https://doi.org/10.1103/PhysRevLett.132.021803https://hdl.handle.net/20.500.13091/5228The first evidence for the Higgs boson decay to a Formula Presented boson and a photon is presented, with a statistical significance of 3.4 standard deviations. The result is derived from a combined analysis of the searches performed by the ATLAS and CMS Collaborations with proton-proton collision datasets collected at the CERN Large Hadron Collider (LHC) from 2015 to 2018. These correspond to integrated luminosities of around Formula Presented for each experiment, at a center-of-mass energy of 13 TeV. The measured signal yield is Formula Presented times the standard model prediction, and agrees with the theoretical expectation within 1.9 standard deviations. © 2024 CERN, for the ATLAS and CMSs Collaboration.eninfo:eu-repo/semantics/openAccessBosonsLarge datasetsStatisticsA-centerCombined analysisHiggs Boson decayIntegrated luminosityLarge Hadron ColliderLarge-hadron collidersProton proton collisionsStandard deviationStatistical significanceZ BosonsPhotonsarticlebosoncontrolled studyhumanmajor clinical studyphotonArticle10.1103/PhysRevLett.132.0218032-s2.0-85182246849