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

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URI: https://hdl.handle.net/10902/33964
ISSN: 0370-2693
ISSN: 1873-2445
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Autoría
Hayrapetyan, A.; Bhowmik, Sandeep; Blanco Fernández, SergioAutoridad Unican; Brochero Cifuentes, Javier AndrésAutoridad Unican; Cabrillo Bartolomé, José IbánAutoridad Unican; Calderón Tazón, AliciaAutoridad Unican; Duarte Campderros, JorgeAutoridad Unican; Fernández García, MarcosAutoridad Unican; Fernández Madrazo, CeliaAutoridad Unican; Gómez Gramuglio, GervasioAutoridad Unican; Lasaosa García, Clara; Martínez Rivero, Celso; Martínez Ruiz del Árbol, PabloAutoridad Unican; Matorras Weinig, FranciscoAutoridad Unican; Matorras Cuevas, PabloAutoridad Unican; Navarrete Ramos, EfrénAutoridad Unican; Piedra Gómez, JonatanAutoridad Unican; Scodellaro, LucaAutoridad Unican; Vila Álvarez, IvánAutoridad Unican; [et al.]
Fecha
2024-08
Derechos
© 2024 CERN for the benefit of the CMS Collaboration. Published by Elsevier B.V. Funded by SCOAP³. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
Publicado en
Physics Letters B, 2024, 855, 138815
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Elsevier
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Palabras clave
CMS
Single top quark
Z boson
Machine learning
Multilepton
Resumen/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.
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© 2024 CERN for the benefit of the CMS Collaboration. Published by Elsevier B.V. Funded by SCOAP³. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).Excepto si se señala otra cosa, la licencia del ítem se describe como © 2024 CERN for the benefit of the CMS Collaboration. Published by Elsevier B.V. Funded by SCOAP³. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).