Compatibility of muon $g-2$, $W$ mass anomaly in type-X 2HDM

TL;DR

This paper investigates whether the type-X 2HDM can simultaneously explain the recent anomalies in the W boson mass and muon g-2 measurements, analyzing parameter space constraints and implications for Higgs decays.

Contribution

It provides a comprehensive analysis of the type-X 2HDM parameter space that can accommodate both anomalies and discusses the impact of Higgs decay measurements on model viability.

Findings

Parameter space consistent with muon g-2 and W mass anomalies identified.

Strong lower bound on $m_H$ from $h o AA$ decay constraints.

Model remains viable within certain $(m_A, aneta)$ regions.

Abstract

Recently CDF II Collaboration reported that they measured W boson mass precisely. The measurement is deviated from the Standard Model (SM) Prediction at 7$\sigma$. Also, the recent FNAL measurement of the muon magnetic moment shows a $4.2\sigma$ deviation. To resolve the W boson as well as the muon $(g-2)$ anomalies, we explore the type-X two Higgs doublet model (2HDM). We analyze the $(m_A, \tan\beta)$ parameter space of the type-X 2HDM consistent with the muon $(g-2)$, lepton universality test and recent $W$ boson mass measurments from the CDF II collaboration. We find that the measurement of the $h\to AA$ branching ratio gives a strong lower mass bound on $m_H$.