  The connection between the scales of $ {\rm SU} (2)\times {\rm U} (1) $ gauge
symmetry breaking and supersymmetry breaking is didactically displayed in the
framework of a T.O.Y. (Theory Overestimating Yukawas) model, a version of the $
(M+1)SSM $ (supersymmetric extension of the standard model with a gauge
singlet) in which the relevant parameters are determined in the fixed point
regime. Some conspicuous features of supersymmetric particle physics are
reviewed in the light of this simplified model. An alternative theory
corresponding to lim $ (M+1)SSM \longrightarrow MSSM, $ leads to interesting
inequalities among the supersymmetric breaking parameters of the $ MSSM. $

High Energy Physics - Phenomenology