LOW-ENERGY PREDICTIONS OF SUSY GUTS - THE MINIMAL MODEL VERSUS THE FINITE-MODEL

We consider the low-energy predictions for sin2-theta(W) and tau(proton) of SUSY GUT's along the lines of Ref. 1. Special attention is paid to the dependence on the mass spectrum of superpartners and possible heavy inhabitants of the Great desert. The minimal and finite SUSY SU(5) models with light and heavy t squark and additional higgsino are considered. It is shown that modern precise LEP data are naturally reproduced within the finite SUSY SU(5) GUT with both light and heavy t squark and light higgsino with a reasonable SU(5) splitting.