UC Riverside

A measurement is presented of electroweak (EW) production of a W$$\mathrm{W} $$ boson in association with two jets in proton–proton collisions at s=13Te$$\sqrt{s}=13\,\text {Te}\text {V} $$. The data sample was recorded by the CMS Collaboration at the LHC and corresponds to an integrated luminosity of 35.9fb-1$$\,\text {fb}^{-1}$$. The measurement is performed for the ℓν$$\ell u $$jj final state (with ℓν$$\ell u $$ indicating a lepton–neutrino pair, and j representing the quarks produced in the hard interaction) in a kinematic region defined by invariant mass mjj>120Ge$$m_\mathrm {jj} >120\,\text {Ge}\text {V} $$ and transverse momenta pTj>25Ge$$p_\mathrm {T j} > 25\,\text {Ge}\text {V} $$. 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$$\sigma _\mathrm {EW}(\mathrm{W} \mathrm {jj})= 6.23 \pm 0.12 \,\text {(stat)} \pm 0.61 \,\text {(syst)} \,\text {pb} $$ 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