Measurements of properties of the Higgs boson in the W boson pair decay channel in proton-proton collisions at $\sqrt{s}=13~\text{TeV}$

Production cross sections of the standard model Higgs boson decaying to a pair of $\mathrm{W}$ bosons are measured. The analysis targets Higgs bosons produced via gluon fusion, vector boson fusion and in association with a $\mathrm{W}$ or $\mathrm{Z}$ boson. Candidate events, in which at least one of the $\mathrm{W}$ bosons originating from the Higgs boson decays leptonically, are identified by selecting final states with at least two charged leptons and moderate missing transverse momentum. Results are presented in the form of inclusive and differential cross sections, as well as coupling modifiers of the Higgs boson to vector bosons and fermions. The full data set collected by the CMS detector during Run 2 of the LHC is used, corresponding to an integrated luminosity of 138 $\text{fb}^{-1}$. The signal strength modifier $\mu$, defined as the ratio of the observed production rate to the standard model expectation, is measured to be $\mu = 0.95^{+0.10}_{-0.09}$.