Constraints on anomalous Higgs boson couplings from its production and decay in the WW channel

A study of the Higgs boson anomalous couplings from its production and decay in the $\mathrm{WW}$ channel is presented. The proton-proton collision data set was collected with the CMS detector at the CERN LHC during 2016-2018, and corresponds to an integrated luminosity of $138~\mathrm{fb}^{-1}$ at a center-of-mass energy of $13~\mathrm{TeV}$. Couplings of the Higgs boson to vector bosons are studied including $CP$-violation effects. The different-flavor dilepton ($\mathrm{e}\mu$) final state is analysed, with dedicated categories targeting gluon fusion, electroweak vector boson fusion, and associated production with a $\mathrm{W}$ or $\mathrm{Z}$ boson. Kinematic information from associated jets is combined using matrix element techniques to increase the sensitivity to anomalous effects at the production vertex. A simultaneous measurement of four Higgs boson couplings to electroweak vector bosons is performed in the framework of a standard model effective field theory. All measurements are consistent with the expectations for the standard model Higgs boson and constraints are set on the fractional contribution of the anomalous couplings to the Higgs boson cross section.