Measurement of electroweak production of a W boson in association with two jets in proton-proton collisions at $\sqrt{s}=$ 13 TeV

  • Freya Blekman (Creator)
  • Jorgen D'Hondt (Creator)
  • Jarne Theo De Clercq (Creator)
  • Kevin Deroover (Creator)
  • Giannis Flouris (Creator)
  • Denys Lontkovskyi (Creator)
  • Steven Lowette (Creator)
  • Ivan Marchesini (Creator)
  • Seth Moortgat (Creator)
  • Lieselotte Moreels (Creator)
  • Quentin Python (Creator)
  • Kirill Skovpen (Creator)
  • Stefaan Tavernier (Creator)
  • Walter Van Doninck (Creator)
  • Petra Van Mulders (Creator)
  • Isis Marina Van Parijs (Creator)

Dataset

Abstract

A measurement is presented of electroweak
(EW) production of a W boson in association with two jets
in proton–proton collisions at √s = 13 TeV. The data sample was recorded by the CMS Collaboration at the LHC
and corresponds to an integrated luminosity of 35.9 fb−1.
The measurement is performed for the νjj final state (with
ν indicating a lepton–neutrino pair, and j representing the
quarks produced in the hard interaction) in a kinematic region
defined by invariant mass mjj > 120 GeV and transverse
momenta pTj > 25 GeV. The cross section of the process
is measured in the electron and muon channels yielding
σEW(Wjj) = 6.23 ± 0.12 (stat) ± 0.61 (syst) pb per channel,
in agreement with leading-order standard model predictions.
The additional hadronic activity of events in a signal-enriched
region is studied, and the measurements are compared with
predictions. The final state is also used to perform a search
for anomalous trilinear gauge couplings. Limits on anomalous trilinear gauge couplings associated with dimension-six
operators are given in the framework of an effective field
theory. The corresponding 95% confidence level intervals
are −2.3 < cWWW/Λ2 < 2.5 TeV−2, −8.8 < cW/Λ2 <
16 TeV−2, and −45 < cB/Λ2 < 46 TeV−2. These results
are combined with the CMS EW Zjj analysis, yielding the
constraint on the cWWW coupling: −1.8 < cWWW/Λ2 <
2.0 TeV−2.
Datum van beschikbaarheid4 mei 2020
UitgeverHEPData

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