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

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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Hauptverfasser: Aad, Georges (VerfasserIn) , Ackermann, Anke (VerfasserIn) , Baltes, Lisa Marie (VerfasserIn) , Bartels, Falk (VerfasserIn) , Rio, Fernando del (VerfasserIn) , Dittmeier, Sebastian (VerfasserIn) , Dunford, Monica (VerfasserIn) , Franchino, Silvia (VerfasserIn) , Junkermann, Thomas (VerfasserIn) , Mkrtchyan, Tigran (VerfasserIn) , Ott, Philipp (VerfasserIn) , Rassloff, Damir Fabrice (VerfasserIn) , Sanfilippo, Lorenzo (VerfasserIn) , Sauer, Christof (VerfasserIn) , Schöning, André (VerfasserIn) , Schultz-Coulon, Hans-Christian (VerfasserIn) , Sothilingam, Varsiha (VerfasserIn) , Stamen, Rainer (VerfasserIn) , Starovoitov, Pavel (VerfasserIn) , Vigani, Luigi (VerfasserIn) , Weber, Sebastian (VerfasserIn) , Wessels, Martin (VerfasserIn) , Zinßer, Joachim (VerfasserIn)
Körperschaft: ATLAS Collaboration (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 17 Oktober 2024
In: Physical review
Year: 2024, Jahrgang: 110, Heft: 7, Pages: 1-30
ISSN:2470-0029
DOI:10.1103/PhysRevD.110.072010
Online-Zugang: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
Volltext
Verfasserangaben:G. Aad et. al. (ATLAS Collaboration)

MARC

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520 |a The inclusive cross section for the production of a single top quark in association with a boson is measured using 140 fb−1 of proton-proton collision data collected with the ATLAS detector at √ =13 TeV. Events containing two charged leptons and at least one jet identified as originating from a -quark are selected. A multivariate discriminant is constructed to separate the ⁢ signal from the ⁢¯ background. The cross section is extracted using a profile likelihood fit to the signal and control regions and it is measured to be ⁢ =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 ⁢⁢ vertex times the Cabibbo-Kobayashi-Maskawa matrix element |LV⁡⁢| of 0.97 ±0.10. 
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