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 √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.

Hayrapetyan, A., Tumasyan, A., Adam, W., Andrejkovic, J.W., Bergauer, T., Chatterjee, S., et al. (2024). Evidence for tWZ production in proton-proton collisions at √𝑠 = 13 TeV in multilepton final states. PHYSICS LETTERS. SECTION B, 855, 1-25 [10.1016/j.physletb.2024.138815].

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

Battilana C.;Bonacorsi D.;Borgonovi L.;Castro A.;Cuffiani M.;Diotalevi T.;Fanfani A.;Giommi L.;Guiducci L.;Rovelli T.;Siroli G. P.;
2024

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. 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.
2024
Hayrapetyan, A., Tumasyan, A., Adam, W., Andrejkovic, J.W., Bergauer, T., Chatterjee, S., et al. (2024). Evidence for tWZ production in proton-proton collisions at √�� = 13 TeV in multilepton final states. PHYSICS LETTERS. SECTION B, 855, 1-25 [10.1016/j.physletb.2024.138815].
Hayrapetyan, A.; Tumasyan, A.; Adam, W.; Andrejkovic, J. W.; Bergauer, T.; Chatterjee, S.; Damanakis, K.; Dragicevic, M.; Escalante Del Valle, A.; Hus...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/1003350
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