Models with Dirac gauginos provide appealing scenarios for physics beyond the standard model. They have smaller radiative corrections to the Higgs mass, a suppression of certain SUSY production processes, and ameliorated flavor constraints. Unfortuna
tely, they also generally have tachyons, the solutions to which typically spoil these positive features. The recently proposed Goldstone Gaugino mechanism provides a simple solution that eliminates these tachyonic states. We provide details on this mechanism and explore models for its origin. In particular, we find SUSY QCD models that realize this idea simply, and discuss scenarios for unification.
Models of supersymmetry with Dirac gauginos provide an attractive scenario for physics beyond the standard model. The supersoft radiative corrections and suppressed SUSY production at colliders provide for more natural theories and an understanding o
f why no new states have been seen. Unfortunately, these models are handicapped by a tachyon which is naturally present in existing models of Dirac gauginos. We argue that this tachyon is absent, with the phenomenological successes of the model preserved, if the right handed gaugino is a (pseudo-)Goldstone field of a spontaneously broken anomalous flavor symmetry.
