Speaker
Description
Measurements of Higgs boson production in the off-shell region are presented, using the four-lepton decay channel. Data from proton-proton collisions, collected by the CMS experiment with an integrated luminosity of 138\fbinv at a center-of-mass energy of 13\TeV, are utilized. This results in the most precise single measurement of light-quark Yukawa couplings to date and represents the first direct test of composite Higgs boson models. Additionally, tests of gluon-fusion production modes within the Standard Model EFT limit are conducted, and the first constraint on the Higgs boson self-coupling in the off-shell region is established. Constraints on the Higgs boson width are provided while accounting for a range of beyond-the-standard-model effects, including both light and heavy particles in the gluon fusion production loop, as well as modified couplings to vector bosons. I would like to upgrade this poster to a parallel talk if possible.
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