Measurement of electroweak production of a W boson in association with two jets in proton-proton collisions at √s=13TeV

(CMS Collaboration) Sirunyan, Albert M; Tumasyan, A.; Antunović, Željko; Brigljević, Vuko; Ferenček, Dinko; Godinović, Nikola; Kadija, Krešo; Kovač, Marko; Lelas, Damir; Luetić, Jelena; Majumder, Devdatta; Mesić, Benjamin; Puljak, Ivica; Roguljić, Matej; Starodumov, Andrey; Đurić, Senka; Šuša, Tatjana; Šćulac, Toni; Woods, Nathaniel (2020) Measurement of electroweak production of a W boson in association with two jets in proton-proton collisions at √s=13TeV. European physical journal C : particles and fields, 80 . ISSN 1434-6044

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Abstract

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

Item Type:	Article
Uncontrolled Keywords:	High energy physics ; Experimental particle physics ; LHC ; CMS ; Particle Physics Experiments ; Physics ; Vector boson scattering ; Hadron-Hadron scattering (experiments) ; Supersymmetry ; Higgs physics ; Particle and resonance production ; B physics ; Particle correlations and fluctuations ; Quarkonium ; Elementary Particles and Fields ; Beyond Standard Model ; Jets ; QCD ; Top physics ; Diboson ; Electroweak ; CKM matrix ; Top quark ; Large detector-systems performance ; Pattern recognition
Subjects:	NATURAL SCIENCES > Physics
Divisions:	Division of Experimental Physics
Depositing User:	Vuko Brigljević
Date Deposited:	02 Feb 2021 13:29
URI:	http://fulir.irb.hr/id/eprint/6217
DOI:	10.1140/epjc/s10052-019-7585-7

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