Evidence for tWZ production in proton-proton collisions at = 13 TeV in multilepton final states

(CMS Collaboration) Giljanović, Duje; Godinović, Nikola; Lelas, Damir; Šćulac, Ana; Kovač, Marko; Šćulac, Toni; Bargassa, Pedrame; Brigljević, Vuko; Chitroda, Bhakti Kanulal; Ferenček, Dinko; Mishra, Saswat; Starodumov, Andrey; Šuša, Tatjana; ..., ...; Zhokin, Alexander (2024) Evidence for tWZ production in proton-proton collisions at = 13 TeV in multilepton final states. Physics letters. B, 855 . ISSN 0370-2693

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Abstract

The 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 and the W boson decays either to leptons or hadrons. The analysed data were recorded by the CMS experiment at the CERN LHC in 2016-2018 in proton-proton collisions at = 13 TeV, and correspond to an integrated luminosity of 138 fb. The measured cross section is 354 54 (stat) 95 (syst) fb, and corresponds to a statistical significance of 3.4 standard deviations.

Item Type:	Article
Uncontrolled Keywords:	High energy physics ; Experimental particle physics ; LHC ; CMS ; Single top quark ; Z boson ; Machine learning ; Multilepton ; p p: scattering ; p p: colliding beams ; channel cross section: measured ; muon: pair production ; vector boson: decay modes ; top: associated production ; W: associated production ; Z0: associated production ; CERN Lab ; electron: pair production ; lepton: multiple production ; final state: ((n)jet 3lepton) ; final state: ((n)jet 4lepton)
Subjects:	NATURAL SCIENCES > Physics
Divisions:	Division of Experimental Physics
Depositing User:	Vuko Brigljević
Date Deposited:	11 Oct 2024 14:39
URI:	http://fulir.irb.hr/id/eprint/9159
DOI:	10.1016/j.physletb.2024.138815

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