S. Heinemeyer et al., QCD CORRECTIONS TO THE MASSES OF THE NEUTRAL CP-EVEN HIGGS BOSONS IN THE MINIMAL SUPERSYMMETRIC STANDARD MODEL - ART. NO. 091701, Physical review. D. Particles and fields, 5809(9), 1998, pp. 1701
We perform a diagrammatic calculation of the leading two-loop QCD corr
ections to the masses of the neutral CP-even Higgs bosons in the minim
al supersymmetric standard model (MSSM). The results are valid for arb
itrary values of the parameters of the Higgs boson and scalar top sect
or of the MSSM. The two-loop corrections are found to reduce the mass
of the lightest Higgs boson considerably compared to its one-loop valu
e. The numerical results are analyzed in the grand unified theory favo
red regions of small and large tan beta. Their impact on a precise pre
diction for the mass of the lightest Higgs boson is briefly discussed.
[S0556-2821(98)50121-X].