Observation of tW production in the single-lepton channel in pp collisions at √s = 13 TeV

The CMS Collaboration

Research output: Contribution to journalArticlepeer-review

Abstract

A measurement of the cross section of the associated production of a single top quark and a W boson in final states with a muon or electron and jets in proton-proton collisions at s = 13 TeV is presented. The data correspond to an integrated luminosity of 36 fb−1 collected with the CMS detector at the CERN LHC in 2016. A boosted decision tree is used to separate the tW signal from the dominant tt ¯ background, whilst the subleading W+jets and multijet backgrounds are constrained using data-based estimates. This result is the first observation of the tW process in final states containing a muon or electron and jets, with a significance exceeding 5 standard deviations. The cross section is determined to be 89 ± 4 (stat) ± 12 (syst) pb, consistent with the standard model. [Figure not available: see fulltext.]

Original languageEnglish (US)
Article number111
JournalJournal of High Energy Physics
Volume2021
Issue number11
DOIs
StatePublished - Nov 2021

Keywords

  • Hadron-Hadron scattering (experiments)
  • Top physics

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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