Aad, G.Abbott, B.Abeling, K.Abicht, N. J.Abidi, S. H.Aboulhorma, A.Abramowicz, H.2025-03-232025-03-2320240031-90071079-7114https://doi.org/10.1103/PhysRevLett.132.021803https://hdl.handle.net/11486/5469The first evidence for the Higgs boson decay to a Z 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 140 fb-1 for each experiment, at a center -of -mass energy of 13 TeV. The measured signal yield is 2.2 +/- 0.7 times the standard model prediction, and agrees with the theoretical expectation within 1.9 standard deviations.eninfo:eu-repo/semantics/openAccessArticle132210.1103/PhysRevLett.132.021803382776072-s2.0-85182246849Q1WOS:001185794500011Q1