Probing Doubly and Singly Charged Higgs at $pp$ Collider HE-LHC

Understand

We analyse the signal sensitivity of multi-lepton final states at collider that can arise from doubly and singly charged Higgs decay in a type-II seesaw framework.

• We assume triplet vev to be very small and degenerate masses for both the charged Higgs states.
• The leptonic branching ratio of doubly and singly charged Higgs states have a large dependency on the neutrino oscillation parameters, lightest neutrino mass scale, as well as neutrino mass hierarchy.
• We explore this as well as the relation between the leptonic branching ratios of the singly and doubly charged Higgs states in detail.