A search for doubly-charged Higgs boson production in three and four lepton final states at $\sqrt{s}=13~\mathrm{TeV}$

A search for a doubly-charged Higgs boson, $\Phi^{\pm\pm}$, in proton-proton collisions at $\sqrt{s} = 13~\mathrm{TeV}$ with the CMS experiment at the LHC using a data sample corresponding to an integrated luminosity of $12.9~\mathrm{fb}^{-1}$ is presented. The search considers final states with three lepton final states coming from the associated production of $\Phi^{\pm\pm}\Phi^{\mp}$ and the four lepton final states coming from the pair production of $\Phi^{++}\Phi^{--}$. Lower bounds on the doubly-charged Higgs boson mass are reported for a variety of assumptions on its branching ratio to charged lepton pairs.