Constraining 2HDM+S model through W-boson mass measurements

TL;DR

This paper constrains the parameter space of the 2HDM+S model using recent W-boson mass measurements, muon g-2 data, and collider excesses, exploring implications for scalar masses and model viability.

Contribution

It provides a comprehensive analysis of the 2HDM+S model constraints incorporating W-boson mass, muon g-2, and collider excesses, highlighting the impact of these measurements on model parameters.

Findings

Allowed scalar masses around 95 and 150 GeV consistent with data

Constraints from muon g-2 restrict vector-like lepton parameters

Model remains viable within certain parameter regions considering recent measurements

Abstract

Following a discussion on $W$-boson mass observed at the CDF and ATLAS, we explore the parameter space allowed in the 2HDM+$S$ model. Further, the model parameter space is constrained through vector-like leptons via muon $g-2$ measurements. We show our results for additional scalar mass fixed to $m_S \approx 95$ and $150$~GeV keeping the standard Higgs-boson mass at 125~GeV in all four types of 2HDM+$S$ model. The chosen mass of the singlet scalar is motivated by the excesses seen at the CMS and ATLAS data in proton-proton collisions at the Large Hadron Collider.