Implications of the new CDF II W-boson mass on two-Higgs-doublet models

We present the implications of the recent measurement of W boson at CDF II on the two-Higgs-doublet model (2HDM). In the analysis, we impose theoretical bounds such as vacuum stability and perturbative unitarity, and several experimental constraints. In addition, we take into account the measurement of sin(2)theta(w) (m(z)) (M) over bar (S) over bar on top of the CDF W-boson mass to investigate how the S and T parameters are determined. We explore two possible scenarios depending on whether the Higgs boson observed at the LHC is the lighter or heavier of CP-even neutral Higgs bosons for 2HDM type I and II. Using the results, we show how the parameter space is constrained, and compare it with the one based on the PDG average of m(w). Furthermore, we explore phenomenological consequences of electroweak precision observables that can be affected by m(w) within the predictions of the 2HDM, and the reduction in parameter space expected from future measurements at the Future Circular Lepton Collider.

Automated summary

This article presents the implications of the recent measurement of W boson at CDF II on the two-Higgs-doublet model (2HDM). Theoretical and experimental constraints are imposed, and the determined S and T parameters are investigated. The article explores two scenarios based on the observed Higgs boson at the LHC for 2HDM type I and II. The parameter space is constrained and compared with the PDG average of m(w), and the consequences of electroweak precision observables within the predictions of the 2HDM are discussed, as well as the expected reduction in parameter space from future measurements at the Future Circular Lepton Collider.