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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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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http://doi.org/10.1103/physrevd.110.072010
No data is associated with this publication.
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Abstract

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 tW signal from the tt¯ background. The cross section is extracted using a profile likelihood fit to the signal and control regions and it is measured to be σtW=75−14+15  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 Wtb vertex times the Cabibbo-Kobayashi-Maskawa matrix element |fLVVtb| of 0.97±0.10. © 2024 CERN, for the ATLAS Collaboration 2024 CERN

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