Hayrapetyan, Aram A.Tumasyan, A. R.Adam, WolfgangAndrejkovic, J. W.Bergauer, ThomasChatterjee, SumanHussain, P. S.2025-02-102025-02-1020240370-2693https://doi.org/10.1016/j.physletb.2024.138815The 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 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. © 2025 Elsevier B.V., All rights reserved.eninfo:eu-repo/semantics/openAccessCMSMachine LearningMultileptonSingle Top QuarkZ BosonArticle10.1016/j.physletb.2024.1388152-s2.0-85197576932