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Measurement of single top-quark production in association with a W boson in pp collisions at √𝑠 =13 TeV with the ATLAS detector

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The inclusive cross section for the production of a single top quark in association with a 𝑊 boson is measured using 140 fb−1 of proton-proton collision data collected with the ATLAS detector at √𝑠 =13 TeV. Events containing two charged leptons and at least one jet identified as originating from a 𝑏...

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Autores principales: Aad, Georges (Autor) , Ackermann, Anke (Autor) , Baltes, Lisa Marie (Autor) , Bartels, Falk (Autor) , Rio, Fernando del (Autor) , Dittmeier, Sebastian (Autor) , Dunford, Monica (Autor) , Franchino, Silvia (Autor) , Junkermann, Thomas (Autor) , Mkrtchyan, Tigran (Autor) , Ott, Philipp (Autor) , Rassloff, Damir Fabrice (Autor) , Sanfilippo, Lorenzo (Autor) , Sauer, Christof (Autor) , Schöning, André (Autor) , Schultz-Coulon, Hans-Christian (Autor) , Sothilingam, Varsiha (Autor) , Stamen, Rainer (Autor) , Starovoitov, Pavel (Autor) , Vigani, Luigi (Autor) , Weber, Sebastian (Autor) , Wessels, Martin (Autor) , Zinßer, Joachim (Autor)
Autor Corporativo: ATLAS Collaboration (Autor)
Formato: Article (Journal)
Lenguaje:inglés
Publicado: 17 Oktober 2024
In: Physical review
Year: 2024, Volumen: 110, Número: 7, Pages: 1-30
ISSN:2470-0029
DOI:10.1103/PhysRevD.110.072010
Acceso en línea:Verlag, kostenfrei, Volltext: https://doi.org/10.1103/PhysRevD.110.072010
Verlag, kostenfrei, Volltext: https://journals.aps.org/prd/abstract/10.1103/PhysRevD.110.072010
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Notas de Autor:G. Aad et. al. (ATLAS Collaboration)
Descripción
Sumario:The inclusive cross section for the production of a single top quark in association with a 𝑊 boson is measured using 140 fb−1 of proton-proton collision data collected with the ATLAS detector at √𝑠 =13 TeV. Events containing two charged leptons and at least one jet identified as originating from a 𝑏-quark are selected. A multivariate discriminant is constructed to separate the 𝑡⁢𝑊 signal from the 𝑡⁢¯𝑡 background. The cross section is extracted using a profile likelihood fit to the signal and control regions and it is measured to be 𝜎𝑡⁢𝑊 =7⁢5+15−14 pb, in good agreement with the Standard Model prediction. The measured cross section is used to extract a value for the left-handed form factor at the 𝑊⁢𝑡⁢𝑏 vertex times the Cabibbo-Kobayashi-Maskawa matrix element |𝑓LV⁡𝑉𝑡⁢𝑏| of 0.97 ±0.10.
Notas:ATLAS Collaboration: G. Aad, A. Ackermann, L.M. Baltes, F. Bartels, F. Del Rio, S.J. Dittmeier, M. Dunford, S. Franchino, T. Junkermann, T. Mkrtchyan, P.S. Ott, D.F. Rassloff, L. Sanfilippo, C. Sauer, A. Schoening, H.-C. Schultz-Coulon, V. Sothilingam, R. Stamen, P. Starovoitov, L. Vigani, S. M. Weber, M. Wessels, J. Zinsser [und 2899 weitere]
Im Titel sind "W" und "pp" kursiv geschrieben
Gesehen am 30.06.2025
Descripción Física:Online Resource
ISSN:2470-0029
DOI:10.1103/PhysRevD.110.072010

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