Light charged Higgs boson and supersymmetry

Abstract

A possible discovery of a relatively light charged Higgs boson H + in near future experiments, with a mass M H + ≲110 GeV, together with the present LEP2 direct limits on the chargino and neutral Higgs sectors, would disfavour the minimal supersymmetric standard model as well as its frequently discussed next-to-minimal supersymmetric extension. We show that a supersymmetric origin can naturally be ascribed to the existence of such a light charged Higgs scalar within the context of the recently introduced minimal nonminimal supersymmetric standard model.