Precise Calculations for the Neutral Higgs-Boson Masses in the MSSM

Abstract

We review the comparison of the results for the neutral CP-even Higgs-boson masses recently obtained within the Feynman-diagrammatic approach with the previous results based on the renormalization group approach. We show that the results differ by new genuine two-loop contributions present in the Feynman-diagrammatic calculation. The numerical effect of these terms on the result for m_h is briefly discussed.

5 pages, 1 figure, to appear in the proceedings of the International Workshop on Linear Colliders, Sitges, April 28 - May 5, 1999