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


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Aad G., Abbott B., Abbott D. C. , Abed Abud A., Abeling K., Abhayasinghe D. K. , ...More

JOURNAL OF HIGH ENERGY PHYSICS, vol.2021, no.6, 2021 (Journal Indexed in SCI) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 2021 Issue: 6
  • Publication Date: 2021
  • Doi Number: 10.1007/jhep06(2021)003
  • Title of Journal : JOURNAL OF HIGH ENERGY PHYSICS
  • Keywords: Hadron-Hadron scattering (experiments), HADRON COLLIDERS, PAIR PRODUCTION, ZZ PRODUCTION, PLUS PLUS, DISTRIBUTIONS

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 p(T)> 30 GeV and a pseudorapidity of |eta| < 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.