Speaker
Description
A search for the production of a Higgs boson in association with two vector bosons via vector boson scattering is presented. The search uses CMS data from proton-proton collisions at $\sqrt{s} = 13\mathrm{TeV}$ collected from 2016 to 2018, corresponding to an integrated luminosity of $138\mathrm{fb^{-1}}$. Selected events are consistent with the presence of two jets originating from vector boson scattering and a Higgs boson decaying into a pair of $b$ quarks, reconstructed as a single large-cone jet, while final states with 0, 1 or 2 charged leptons coming from the decays of the two vector bosons are studied.
The study constrains the quartic $VVHH$ coupling strength relative to the standard model, $\kappa_{2V}$, in the observed (expected) range $[0.40, 1.60]$ ($[0.34, 1.66]$) at 95\% confidence level when the other Higgs boson couplings are fixed to their SM values. The process is also sensitive to the $WWHH$ and $ZZHH$ quartic couplings independently, whose strengths relative to the standard model are constrained in the observed (expected) ranges $[0.17, 1.84]$ ($[0.11, 1.89]$) and $[-0.37, 2.38]$ ($[-0.54, 2.54]$), for $\kappa_{2W}$ and $\kappa_{2Z}$ respectively. A two-dimensional scan is performed to determine exclusion regions in the $\kappa_{2W}$-$\kappa_{2Z}$ plane.
