Measurement of inclusive and differential cross sections of single top quark production in association with a W boson in proton-proton collisions at $\sqrt{s}$ = 13.6 TeV

Abstract

The first measurement of the inclusive and normalised differential cross sections of single top quark production in association with a W boson in proton-proton collisions at a centre-of-mass energy of 13.6 TeV is presented. The data were recorded with the CMS detector at the LHC in 2022, and correspond to an integrated luminosity of 34.7 fb${}^{-1}$. The analysed events contain one muon and one electron in the final state. For the inclusive measurement, multivariate discriminants exploiting the kinematic properties of the events are used to separate the signal from the dominant top quark-antiquark production background. A cross section of 82.3 $\pm$ 2.1 (stat) ${}_{-9.7}^{+9.9}$ (syst) $\pm$ 3.3 (lumi) pb is obtained, consistent with the predictions of the standard model. A fiducial region is defined according to the detector acceptance to perform the differential measurements. The resulting differential distributions are unfolded to particle level and show good agreement with the predictions at next-to-leading order in perturbative quantum chromodynamics.

Replaced with the published version. Added the journal reference and the DOI. All the figures and tables can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/TOP-23-008 (CMS Public Pages)

References in corpus (18)

• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• Matching NLO QCD computations with Parton Shower simulations: the POWHEG method
• Herwig++ Physics and Manual
• Tuning PYTHIA 8.1: the Monash 2013 Tune
• Vector boson pair production at the LHC
• Two-loop soft anomalous dimensions for single top quark associated production with a W- or H-
• Description and performance of track and primary-vertex reconstruction with the CMS tracker
• Single-top hadroproduction in association with a W boson
• The Catchment Area of Jets
• Pileup Per Particle Identification
• Jet Flavour Classification Using DeepJet
• The PDF4LHC21 combination of global PDF fits for the LHC Run III
• Effects of color reconnection on $t\bar{t}$ final states at the LHC
• tWH associated production at the LHC
• The CMS statistical analysis and combination tool: COMBINE
• Search for New Physics via Single Top Production at the LHC
• Higher-order corrections for $tW$ production at high-energy hadron colliders
• Probing top quark anomalous moments in $W$ boson associated single top quark production at the LHC using polarization and spin correlation

Cited by in corpus (3)

• Constraining dimension-6 SMEFT with higher-order predictions for $pp\to tW$
• Approximate N${}^2$LO and N${}^3$LO QCD Predictions for $tW$ Production
• Recent measurements of top cross sections at CMS