Dirac-type gauge theories and the mass of the Higgs boson

We discuss the mass of the (physical component of the) Higgs boson in one-loop and top-quark-mass approximation. For this the minimal Standard Model is regarded as a specific (parameterized) gauge theory of Dirac type. It is shown that the latter formulation, in contrast to the usual description of the Standard Model, gives a definite value for the Higgs mass. The predicted value for the Higgs mass depends on the value addressed to the top mass m(T). We obtain m(H) = 186 +/- 8 GeV for m(T) = 174 +/- 3 GeV (direct observation of top events), resp. m(H) = 184 +/- 22 GeV for m(T) = 172 +/- 10 GeV (Standard Model electroweak fit). Although the Higgs mass is predicted to be near the upper bound, mH is in full agreement with the range 114 <= m(H) < 193 GeV that is allowed by the Standard Model. We show that the inclusion of ( Dirac) massive neutrinos does not alter the results presented. We also briefly discuss how the derived mass values are related to those obtained within the frame of non-commutative geometry.