Measurements of W+W+ ≥ 1 jet production cross-sections in pp collisions at √s = 13 TeV with the ATLAS detector

ATLAS Collaboration

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Abstract

Fiducial and differential cross-section measurements of W+W production in association with at least one hadronic jet are presented. These measurements are sensitive to the properties of electroweak-boson self-interactions and provide a test of perturbative quantum chromodynamics and the electroweak theory. The analysis is performed using proton-proton collision data collected at √s = 13 TeV with the ATLAS experiment, corresponding to an integrated luminosity of 139 fb−1. Events are selected with exactly one oppositely charged electron-muon pair and at least one hadronic jet with a transverse momentum of pT > 30 GeV and a pseudorapidity of |η| < 4.5. After subtracting the background contributions and correcting for detector effects, the jet-inclusive W+W− + ≥ 1 jet fiducial cross-section and W+W− + jets differential cross-sections with respect to several kinematic variables are measured. These measurements include leptonic quantities, such as the lepton transverse momenta and the transverse mass of the W+W system, as well as jet-related observables such as the leading jet transverse momentum and the jet multiplicity. Limits on anomalous triple-gauge-boson couplings are obtained in a phase space where interference between the Standard Model amplitude and the anomalous amplitude is enhanced.
Original languageEnglish
Article number3
Number of pages59
JournalJHEP
Volume2021
Issue number6
DOIs
Publication statusPublished - 1 Jun 2021

Keywords

  • hep-ex
  • Hadron-Hadron scattering (experiments)

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