Type-II see-saw at μ+ μ− collider

Abstract

Doubly-charged Higgs bosons have extensively been searched at the LHC. In this work, we study the sensitivity reach of the doubly-charged scalar (H±±) in muon collider for the well-known Type-II seesaw scenario. First, we perform a cut-based analysis to predict the discovery prospect in the muon collider operating with 3 TeV center of mass energy. In addition to this, we have also performed a multivariate analysis and mentioned the cut-based result along with the result obtained from the multivariate analysis. We find that the cut-based analysis is more significant as compared to the multivariate analysis in the large doubly-charged scalar mass region. We predict that a doubly-charged scalar mass, MH±±, up to 1450 GeV can be probed with 5σ significance for center of mass s=3 TeV and integrated luminosity L=1000fb−1.