A measurement of the electroweak (EW) production of two jets in association with a Z boson in proton-proton collisions at √s = 13 TeV is presented, based on data recorded in 2016 by the CMS experiment at the LHC corresponding to an integrated luminosity of 35.9 fb-1. The measurement is performed in the ℓℓjj final state with ℓ including electrons and muons, and the jets j corresponding to the quarks produced in the hard interaction. The measured cross section in a kinematic region defined by invariant masses mℓℓ >50 GeV, mjj> 120 GeV, and transverse momenta pTj > 25 GeV is σEW(ℓℓjj) = 534 ± 20 (stat) ± 57 (syst) fb, in agreement with leading-order standard model predictions. The final state is also used to perform a search for anomalous trilinear gauge couplings. No evidence is found and 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-2.6 < cWWW/Δ2< 2.6 TeV-2and-8.4 < cW/Δ-2< 10.1 TeV-2. The additional jet activity of events in a signal-enriched region is also studied, and the measurements are in agreement with predictions.
|Publication status||Published - 2017 Dec 28|
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