Mass bounds of the lightest CP-even Higgs boson in the two-Higgs-doublet model

摘要

The upper and the lower bounds of the lightest CP-even Higgs-boson mass (m_h) are discussed in the two-Higgs-doublet model (2HDM) with a softly-broken discrete symmetry. They are obtained as a function of a cut-off scale #LAMBDA# ( s#gamma# constraint, small values of m_h are excluded in Model II of the 2HDM.