Approximating the radiatively corrected Higgs mass in the Minimal   Supersymmetric Model
  To obtain the most accurate predictions for the Higgs masses in the minimal supersymmetric model (MSSM), one should compute the full set of one-loop radiative corrections, resum the large logarithms to all orders, and add the dominant two-loop effects. A complete computation following this procedure yields a complex set of formulae which must be analyzed numerically. We discuss a very simple approximation scheme which includes the most important terms from each of the three components mentioned above. We estimate that the Higgs masses computed using our scheme lie within 2 GeV of their theoretically predicted values over a very large fraction of MSSM parameter space. 
Howard E. Haber (CERN and Santa Cruz Institute for Particle Physics),   Ralf Hempfling (Max-Planck-Institut fur Physik, Muni...