Simplified R-Symmetry Breaking and Low-Scale Gauge Mediation

Understand

We argue that some of the difficulties in constructing realistic models of low-scale gauge mediation are artifacts of the narrow set of models that have been studied.

• In particular, much attention has been payed to the scenario in which the Goldstino superfield in an O'Raifeartaigh model is responsible for both supersymmetry breaking and R-symmetry breaking.
• In such models, the competing problems of generating sufficiently massive gauginos while preserving an acceptably light gravitino can be quite challenging.
• We show that by sharing the burdens of breaking supersymmetry and R-symmetry with a second field, these problems are easily solved even within the O'Raifeartaigh framework.