Hayrapetyan, A.Tumasyan, A.Adam, W.Andrejkovic, J. W.Bergauer, T.Chatterjee, S.Damanakis, K.2025-03-202025-03-2020240370-26931873-2445https://doi.org/10.1016/j.physletb.2024.138815https://hdl.handle.net/20.500.14034/2416The first evidence for the standard model production of a top quark in association with a W boson and a Z boson is reported. The measurement is performed in multilepton final states, where the Z boson is reconstructed via its decays to electron or muon pairs. At least one W boson, associated or from top quark decay, decays leptonically, too. The analysed data were recorded by the CMS experiment at the CERN LHC in 2016-2018 in proton-proton collisions at root s = 13 TeV, and correspond to an integrated luminosity of 138 fb(-1). The measured cross section is 354 +/- 54(stat) +/- 95(syst) fb, and corresponds to a statistical significance of 3.4 standard deviations.eninfo:eu-repo/semantics/openAccessCMSSingle top quarkZ bosonMachine learningMultileptonArticle10.1016/j.physletb.2024.138815855Q1WOS:001355148000001Q1