Gauge-Mediated Supersymmetry Breaking without Fundamental Singlets

Abstract

The messenger sector of existing models of gauge-mediated supersymmetry breaking may be simplified by using a non-renormalizable superpotential term to couple the vector-like quark and lepton messenger fields to a chiral gauge-invariant of the supersymmetry-breaking sector. This eliminates the need for a fundamental singlet and for an additional gauge sector needed to generate appropriate expectation values for the singlet component fields. This scenario is more natural if the supersymmetry-breaking sector itself involves a non-renormalizable superpotential. Several examples are constructed based on non-renormalizable $SU(n)\times SU(n-1)$ supersymmetry-breaking theories.

15 pages, Latex. Some remarks on cosmological viability of massless fermions and other exotic fields added in end of section 3

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