Light charged Higgs in the NMSSM

TL;DR

This paper reviews the theoretical motivation, experimental constraints, and search strategies for a light charged Higgs in the NMSSM, emphasizing its decay modes and potential for early discovery at the LHC.

Contribution

It provides a comprehensive overview of the light charged Higgs scenario in the NMSSM, including decay channels, constraints, and novel search strategies for collider experiments.

Findings

Charged Higgs likely lighter than top quark with dominant decay to W and A

Potential for early LHC discovery with 1 fb$^{-1}$ of data

Experimental constraints from direct searches summarized

Abstract

We review motivation for a light charged Higgs scenario that occurs in a class of models with a light CP-odd Higgs boson. If the light CP-odd Higgs is doublet-like the charged Higgs is typically lighter than the top quark and it dominantly decays into $W^\pm A$ with $B(H^+ \to W^+ A) > 70%$. We summarize experimental constraints from direct searches and discuss search strategies based on subleading decay modes of the CP-odd Higgs. A search for $t \to H^+ b, \;\;\;\; H^+ \to W^+ A, \;\;\;\; A \to \mu^+ \mu^- $ could provide an evidence for the charged Higgs or a discovery already with 1 fb$^{-1}$ of data at the LHC.