Measurement of inclusive and differential cross sections for single top quark production in association with a W boson in proton-proton collisions at s = 13 TeV

The CMS collaboration cms-publication-committee-chair@cern.ch

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4 Citations (Scopus)

Abstract

Measurements of the inclusive and normalised differential cross sections are presented for the production of single top quarks in association with a W boson in proton-proton collisions at a centre-of-mass energy of 13 TeV. The data used were recorded with the CMS detector at the LHC during 2016–2018, and correspond to an integrated luminosity of 138 fb−1. Events containing one electron and one muon in the final state are analysed. For the inclusive measurement, a multivariate discriminant, exploiting the kinematic properties of the events is used to separate the signal from the dominant tt¯ background. A cross section of 79.2±0.9stat−8.0+7.7syst±1.2lumi pb is obtained, consistent with the predictions of the standard model. For the differential measurements, a fiducial region is defined according to the detector acceptance, and the requirement of exactly one jet coming from the fragmentation of a bottom quark. The resulting distributions are unfolded to particle level and agree with the predictions at next-to-leading order in perturbative quantum chromodynamics.

Original languageEnglish
Article number46
JournalJournal of High Energy Physics
Volume2023
Issue number7
DOIs
Publication statusPublished - Jul 2023
Externally publishedYes

Keywords

  • Hadron-Hadron Scattering
  • Top Physics

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