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

The CMS collaboration, A. Hayrapetyan, A. Tumasyan, W. Adam, Laurent Forthomme, H. Kirschenmann, K. Österberg, M. Voutilainen, Shudhashil Bharthuar, Erik BrĂŒcken, F. Garcia, J. Havukainen, Jaana HeikkilĂ€, Kimmo Kallonen, Minsuk Kim, R. Kinnunen, T. LampĂ©n, K. Lassila-Perini, S. Laurila, S. LehtiT. LindĂ©n, Mikko Lotti, P. Luukka, Laura Martikainen, Mikael Erkki Johannes MyllymĂ€ki, Juska Pekkanen, Milla-Maarit Rantanen, H. Siikonen, E. Tuominen, J. Tuominiemi, Jussi Viinikainen, H. Petrow, T. Tuuva

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Sammanfattning

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. 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.
OriginalsprÄkengelska
Artikelnummer138815
TidskriftPhysics Letters B
Volym855
Antal sidor25
ISSN0370-2693
DOI
StatusPublicerad - aug. 2024
MoE-publikationstypA1 Tidskriftsartikel-refererad

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