Double Neutral Higgs production in the Two-Higgs doublet model at the LHC

TL;DR

This paper investigates the production and decay of two CP-even Higgs bosons in the two-Higgs doublet model at the LHC, identifying parameter regions with enhanced signals and potential for measuring triple Higgs couplings.

Contribution

It provides a comprehensive analysis of double Higgs production in the two-Higgs doublet model, including decay profiles and parameter space regions with observable signals at the LHC.

Findings

Cross section can be up to 100 times larger than the Standard Model.

Distinct decay signatures can emerge for specific parameter choices.

Potential to measure triple Higgs couplings in certain scenarios.

Abstract

In this work we study the production and decay of two CP-even Higgs bosons in the general CP-conserving two-Higgs doublet model at the LHC. We also study the limiting case of the decoupling scenario. For each Yukawa version of the model, we look for the region of the parameter space where a signal would be seen at the LHC. Taking into account theoretical and experimental constraints on the two Higgs doublet model parameters, we show that the cross section can be two orders of magnitude above the corresponding Standard Model cross section. We have also studied in detail the decay profile of the Higgs bosons and showed that interesting signatures may emerge for some particular values of the parameters. In some scenarios, specific triple Higgs could be measured.