How Well Can We Predict the Mass of the Higgs Boson of the Minimal Supersymmetric Model?

The upper bound on the mass of the light CP-even Higgs boson of the minimal supersymmetric model (MSSM) depends on the supersymmetric particle spectrum via radiative loop effects. At present, complete one-loop results and partial two-loop results are known. Some simple analytic approximations have been obtained which are quite accurate over a large portion of the MSSM parameter space. Based on these results, I examine how accurately one can predict the upper bound on the mass of the lightest MSSM Higgs boson.