Two Higgs Doublet Model in light of the Standard Model H -> tau^+ tau^- search at the LHC

TL;DR

This paper analyzes how recent LHC searches for H -> tau^+ tau^- and di-muon signals constrain the parameter space of the two Higgs doublet model, highlighting the impact of experimental results on theoretical models.

Contribution

It provides a detailed examination of LHC search results to delineate the allowed parameter space of the 2HDM, including implications of recent di-muon searches.

Findings

Constraints on 2HDM parameters from H -> tau^+ tau^- searches

Implications of di-muon search for CP-odd scalar in 2HDM

Enhanced decay rates of scalars into tau pairs in 2HDM

Abstract

We study the implications of the searches based on H -> tau^+ tau^- by the ATLAS and CMS collaborations on the parameter space of the two Higgs doublet model (2HDM). In the 2HDM, the scalars can decay into a tau pair with a branching ratio larger than the SM one, leading to constraints on the 2HDM parameter space. We have also discussed the implications for the 2HDM of the recent di-muon search by the ATLAS collaboration for a CP-odd scalar in the mass range 4-12 GeV.