Scalar Field Mass Generation in the Gauge Theory SU(2)⊗U(1)⊗Z2

A minimal extension of the Standard Model with the gauge grup SU(2)⊗U(1)⊗Z2 has been built. In this theory, there are three scalar fields, namely two doublet Φ and η and one singlet Φs. The scalar field mass of Φs is found to be greater than the mass of η and the scalar field mass of η is greater than the mass of Φ (mΦs > mη > mΦ).