  We construct supersymmetric gauge theories with new mechanisms of dynamical
supersymmetry breaking. The models have flat directions at the classical level,
and different mechanisms lift these flat directions in different regions of the
classical moduli space. In one branch of the moduli space, supersymmetry is
broken by confinement in a novel manner. The models contain only dimensionless
couplings and have large groups of unbroken global symmetries, making them
potentially interesting for model-building. As an illustrative application, we
couple the standard model gauge group to a model with an SU(5) global symmetry,
resulting in a model with composite messengers and a non-minimal spectrum of
superpartner masses.

High Energy Physics - Phenomenology