Heavy Higgs Searches and Constraints on Two Higgs Doublet Models

TL;DR

This paper analyzes how current and future LHC data constrain two Higgs doublet models by searching for heavy Higgs bosons in the 200-400 GeV range, narrowing their parameter space.

Contribution

It extends previous constraints on two Higgs doublet models by including full data sets and projected sensitivities for higher luminosities.

Findings

Non-observation of heavy Higgs bosons significantly restricts model parameters.

Future data with 3000 fb^-1 will further tighten constraints.

Current data already limits the allowed parameter space.

Abstract

Since the discovery of a Higgs boson at the LHC and the measurement of many of its branching ratios, there have been numerous studies exploring the restrictions these results place on the parameter space of two Higgs doublet models. We extend these results to include the full data set and study the expected sensitivity that can be obtained with 300 and 3000 inverse femptobarn of integrated luminosity. We consider searches for a heavy Standard Model Higgs boson, with a mass ranging from 200 to 400 GeV, and show that the non-observation of such a Higgs boson can substantially narrow the allowed regions of parameter space in two Higgs doublet models.