New decay modes of heavy Higgs bosons in a two Higgs doublet model with vectorlike leptons

TL;DR

This paper explores novel decay pathways of heavy Higgs bosons in a two Higgs doublet model with vectorlike leptons, highlighting how these can evade current search strategies and proposing new signatures for detection.

Contribution

It introduces new decay topologies of heavy Higgs bosons involving vectorlike leptons, expanding the understanding of possible signatures in extended Higgs models.

Findings

New decay modes dominate in certain parameter regions

Existing searches may miss these decay signatures

Proposes new search strategies involving monojet, mono Z, and mono Higgs signals

Abstract

In models with extended Higgs sector and additional matter fields, the decay modes of heavy Higgs bosons can be dominated by cascade decays through the new fermions rendering present search strategies ineffective. We investigate new decay topologies of heavy neutral Higgses in two Higgs doublet model with vectorlike leptons. We also discuss constraints from existing searches and discovery prospects. Among the most interesting signatures are monojet, mono Z, mono Higgs, and Z and Higgs bosons produced with a pair of charged leptons.