Hunting light Higgses at the LHC in the context of the 2HDM Type-I

Abstract

We show the reinterpretation of existing searches for exotic decays of the Standard Model (SM)-like Higgs, $H\to aa(hh)$, in various final states, in the framework of the 2-Higgs Doublet Model (2HDM) Type-I. We then explore a new search for such light Higgses, $a$ and $h$, at the Large Hadron Collider (LHC) Run 3 for an integrated luminosity of 300 ${\text{fb}}^{-1}$. After performing a scan over the model parameters, we found that the inverted scenario of Type-I offers a new promising signal in the form of the following cascade decays: $H\to Z^{\ast }a\to Z^{\ast }{Z}^{\ast }h\to b\overline{b}{\mu }^{-}{\mu }^{+}jj$. We investigate then its significance through a full Monte Carlo (MC) simulation down to the detector level.

Comments: Talk presented at the 41st International Conference on High Energy physics