Evidence for tWZ production in proton-proton collisions at <math altimg="si1.svg"><msqrt><mrow><mi>s</mi></mrow></msqrt><mo linebreak="goodbreak" linebreakstyle="after">=</mo><mn>13</mn></math> TeV in multilepton final states

Benecke, Anna;Bruno, Giacomo;Caputo, Claudio;Delaere, Christophe;Bethani, Agni;et.al.
(2024) Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics — Vol. 855 (2024)

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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. At least one W boson, associated or from top quark decay, decays leptonically, too. The analysed data were marc:recorded by the CMS experiment at the CERN LHC in 2016–2018 in proton-proton collisions at <math altimg="si1.svg"><msqrt><mrow><mi>s</mi></mrow></msqrt><mo linebreak="goodbreak" linebreakstyle="after">=</mo><mn>13</mn></math> TeV, and correspond to an integrated luminosity of 138 fb<sup loc="post">−1</sup>. The measured cross section is <math altimg="si2.svg"><mn>354</mn><mo>±</mo><mn>54</mn><mo stretchy="false">(</mo><mtext>stat</mtext><mo stretchy="false">)</mo><mo>±</mo><mn>95</mn><mo stretchy="false">(</mo><mtext>syst</mtext><mo stretchy="false">)</mo></math> fb, and corresponds to a statistical significance of 3.4 standard deviations.
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Benecke, A., Bruno, G., Caputo, C., Delaere, C., Donertas, I. S., Giammanco, A., Jaffel, K., Jain, S., Lemaitre, V., Lidrych, J., Mastrapasqua, P., Mondal, K., Tran, T. T., Wertz, S., CMS, Bethani, A., & et al. (2024). Evidence for tWZ production in proton-proton collisions at <math altimg=“si1.svg”><msqrt><mrow><mi>s</mi></mrow></msqrt><mo linebreak=“goodbreak” linebreakstyle=“after”>=</mo><mn>13</mn></math> TeV in multilepton final states. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 855. https://doi.org/10.1016/j.physletb.2024.138815 (Original work published 2024)