Prospects for a Search for Doubly Charged Higgs Bosons at the HL-LHC

A variety of new physics theories, including left-right symmetric and type-II seesaw models, predict a massive, TeV-scale, doubly charged Higgs-like particle. These can be pair-produced in hadronic interactions via a Drell-Yan-like mechanism and decay to a pair of like-sign muons or electrons. We present an analysis based on simulated DELPHES events with the Phase-2 CMS detector at the High-Luminosity LHC. This analysis estimates a lower expected exclusion mass limit of 1400 GeV at 95\% CL for a doubly charged Higgs boson decaying into a pair of electrons or muons.