Measurement of electroweak production of a W boson in association with two jets in proton–proton collisions at √s=13TeV
Issue Date
2020-01-18Author
CMS Collaboration
Publisher
SpringerOpen
Type
Article
Article Version
Scholarly/refereed, publisher version
Rights
© CERN for the benefit of the CMS collaboration 2020. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License.
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A measurement is presented of electroweak (EW) production of a W boson in association with two jets in proton–proton collisions at s√=13TeV. The data sample was recorded by the CMS Collaboration at the LHC and corresponds to an integrated luminosity of 35.9fb−1. The measurement is performed for the ℓνjj final state (with ℓν indicating a lepton–neutrino pair, and j representing the quarks produced in the hard interaction) in a kinematic region defined by invariant mass mjj>120GeV and transverse momenta pTj>25GeV. 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<2.5TeV−2, −8.8<cW/Λ2<16TeV−2, and −45<cB/Λ2<46TeV−2. These results are combined with the CMS EW Zjj analysis, yielding the constraint on the cWWW coupling: −1.8<cWWW/Λ2<2.0TeV−2.
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Citation
Sirunyan, A.M., Tumasyan, A., Adam, W. et al. Measurement of electroweak production of a W boson in association with two jets in proton–proton collisions at s√=13TeV. Eur. Phys. J. C 80, 43 (2020). https://doi.org/10.1140/epjc/s10052-019-7585-7
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