New Light $H^{\pm }$ Discovery Channels at the LHC

Abstract

A light charged Higgs boson has been searched for at the Large Hadron Collider (LHC) via top (anti)quark decay, i.e., $t\to b{H}^{+}$, if kinematically allowed. In this contribution, we propose new channels for light charged Higgs boson searches via the pair productions $pp\to H^{\pm }h/A$ and $pp\to H^{+}{H}^{-}$ at the LHC in the context of the Two-Higgs Doublet Model (2HDM) Type-I. By focusing on a case where the heavy H state is the Standard Model (SM)-like one already observed, we investigate the production of the aforementioned charged Higgs bosons and their bosonic decay channels, namely, $H^{\pm }\to W^{\pm }h$ and/or $H^{\pm }\to W^{\pm }A$. We demonstrate that such production and decay channels can yield substantial alternative discovery channels for $H^{\pm }$ bosons at the LHC. Finally, we propose eight benchmark points (BPs) to motivate the search for such signatures.

Comments: 6 pages, 3 figures, talk given at Charged Higgs Online workshop, 30-31 August 2021; minor changes