CONSTRAINTS ON THE MINIMAL SUSY-SO(10) MODEL FROM COSMOLOGY AND THE B-]S-GAMMA DECAY

It is shown that the minimal supersymmetric SO(10) model with electrow eak radiative breaking and universal soft mass terms at the GUT scale is strongly disfavoured by the combination of constraints from the b - -> s gamma decay and the condition Omega h(2) < 1 for the lightest (st able) neutralino. The constraints are, however, easily satisfied for t he supersymmetric SO(10) models with certain class of non-universal sc alar masses which gives small supersymmetric corrections to the bottom quark mass and light higgsino-like neutralinos.