Abstract
We propose a class of supergravity models coupled to matter in which the scales of supersymmetry breaking and of weak gauge symmetry breaking are both fixed by dimensional transmutation, not put in by hand. The models have a flat potential with zero cosmological constant before the evaluation of weak radiative corrections which determine m 3 2 , m W = exp [ −O(1) α t ]m p :α t = O(α) . These models are consistent with all particle physi cs and cosmological constraints for top quark masses in the range 30 GeV < m t < 100 GeV.
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