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 sqrt(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.

Evidence for tWZ production in proton-proton collisions at sqrt(s) = 13 TeV in multilepton final states / Hayrapetyan, A., Tumasyan, A., Adam, W., Andrejkovic, J.W., Bergauer, T., Chatterjee, S., Damanakis, K., Dragicevic, M., Escalante Del Valle, A., Hussain, P.S., Jeitler, M., Krammer, N., Liko, D., Mikulec, I., Schieck, J., Schöfbeck, R., Schwarz, D., Sonawane, M., Templ, S., Waltenberger, W., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - ELETTRONICO. - 855:(2024), pp. 138815.0-138815.0. [10.1016/j.physletb.2024.138815]

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

Bardelli, G.;Camaiani, B.;Ceccarelli, R.;Ciulli, V.;D'Alessandro, R.;Focardi, E.;Latino, G.;Lenzi, P.;Lizzo, M.;Papanastassiou, A.;
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 sqrt(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
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Hayrapetyan, A.; Tumasyan, A.; Adam, W.; Andrejkovic, J.W.; Bergauer, T.; Chatterjee, S.; Damanakis, K.; Dragicevic, M.; Escalante Del Valle, A.; Huss...espandi
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Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/1401498
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