Revisiting wrong sign Yukawa coupling of type II two-Higgs-doublet model in light of the recent LHC data

TL;DR

This paper analyzes the parameter space of the type II two-Higgs-doublet model with wrong sign Yukawa couplings in light of recent LHC data, finding most of it is excluded except for specific narrow regions.

Contribution

It provides a comprehensive update on the viability of wrong sign Yukawa couplings in the type II 2HDM considering latest experimental constraints.

Findings

Most parameter space is excluded by LHC data.

Allowed regions are narrow and specific for certain Higgs masses.

A light pseudo-scalar around 20 GeV remains possible.

Abstract

In light of the recent LHC Higgs data, we examine the parameter space of type II two-Higgs-doublet model in which the 125 GeV Higgs has the wrong sign Yukawa couplings. Combining related theoretical and experimental limits, we find that the LHC Higgs data exclude most of the parameter space of the wrong sign Yukawa coupling. For $m_H=$ 600 GeV, the allowed samples are mainly distributed in several corners and narrow bands of m_A<20 GeV, 30 GeV<m_A<120 GeV, 240 GeV<m_A<300 GeV, 380 GeV <m_A<430 GeV, and 480 GeV<m_A<550 GeV. For m_A=600 GeV, m_H is required to be less than 470 GeV. The light pseudo-scalar with a mass of 20 GeV is still allowed in case of the wrong sign Yukawa coupling of 125 GeV Higgs.