Authors: Jason L Evans Masahiro Ibe Matthew Sudano Tsutomu T Yanagida
Publish Date: 2012/03/02
Volume: 2012, Issue: 3, Pages: 4-
Abstract
We argue that some of the difficulties in constructing realistic models of lowscale 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 Rsymmetry 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 Rsymmetry with a second field these problems are easily solved even within the O’Raifeartaigh framework We present explicit models realizing minimal gauge mediation with a gravitino mass in the eV range that are both calculable and falsifiable
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