The Higgs at 10: Measuring H -> WW at CMS

10 years ago, the discovery of the Higgs boson by the ATLAS and CMS experiments opened a new chapter of particle physics measurements. Since then, an extensive program of measurements has tested the compatibility of the observed boson with the Standard Model (SM) of particle physics. These measurements are particularly sensitive to signs of new physics, as most models predict deviations from the SM in the Higgs sector.
I will discuss a recent measurement of Higgs boson production and decay to a pair of W bosons carried out at CMS, using data collected at a collision energy of 13 TeV during the period from 2016 to 2018. The measurement covers the gluon-gluon fusion, vector boson fusion, and associated vector boson production modes of the Higgs boson, and includes both semileptonic and fully leptonic final states of the H -> WW decay. Results are presented for both inclusive and quasi-differential cross sections, as well as Higgs coupling strengths to vector bosons and fermions. All results are compatible with SM predictions. The inclusive production cross section is one of the most precise measurements in a single decay mode, and the combination of this measurement with other decay modes has yielded the most precise measurement of Higgs couplings and cross sections produced by CMS.