Exploring Two Higgs Doublet Models Through Higgs Production

TL;DR

This paper analyzes how recent Higgs boson and B decay measurements constrain two Higgs doublet models, highlighting the potential to exclude certain model types with future data.

Contribution

It provides a comprehensive examination of experimental constraints on 2HDMs from Higgs and B decay observations, identifying which models are still viable.

Findings

Type I 2HDMs could be excluded by future h0 -> gamma gamma measurements.

Current data severely restricts parameters of other 2HDMs.

Recent decay observations further constrain 2HDM parameter space.

Abstract

We discuss the connections between the recently observed Higgs-like particle and rare B decays in the context of two Higgs doublet models (2HDMs). The measured decays of the Higgs boson to fermions and gauge bosons, along with the observation of the decay B_s -> \mu+ \mu-, place stringent restrictions on the allowed parameter space of 2 Higgs doublet models. Future measurements of h0 -> \gamma \gamma can potentially exclude type I 2HDMs, while the parameters of other 2HDMs are already severely restricted. The recent observations of the h0 -> \tau+ \tau- and h0 -> b bbar decays further constrain the models.