Probing Charged Higgs Bosons through $H^\pm \to W^\pm A$ Decay in the Type-I Two-Higgs Doublet Model
A light pseudoscalar lighter than the 125 GeV Higgs boson remains allowed within the type-I Two-Higgs Doublet Model (2HDM), consistent with current collider constraints, including Higgs signal strength measurements and direct searches for additional Higgs bosons. At the Large Hadron Collider (LHC), the light pseudoscal...