Light charged Higgs boson in $H^{\pm }h$ associated production at the LHC

Abstract

We investigate the light charged Higgs boson production via $pp\to H^{\pm }h$ at the Large Hadron Collider (LHC) in the Two-Higgs Doublet Model (2HDM) type-I. By focusing on a scenario where $H$ is the observed Higgs boson of mass 125 GeV, we study the aforementioned Higgs boson production channel and explore its bosonic decay $H^{\pm }\to W^{\pm }h$. The latter can have a sizable rate that possibly dominates, over the fermionic decay channels, in several regions of the viable parameter space. We demonstrate that the production process $pp\to H^{\pm }h$ followed by $H^{\pm }\to W^{\pm }h$ could be the most promising experimental avenue to search for light $H^{\pm }$ at the LHC.

Comments: 6 pages, 2 figures, talk given at First Pan-African Astro-Particle and Collider Physics Workshop, 21-23 March 2022; v2 added affiliation and email address