High Energy Theory Seminar

Experimental constraints on models such as supersymmetry have challenged our assumptions about naturalness, while simultaneously pushing exploration into alternatives that might be more natural. One such scenario is supersymmetry with Dirac gauginos, which have a number of phenomenologically beneficial properties, and promise a more natural theory. Unfortunately, existing models are plagued by a color-breaking tachyon, which, by quite general arguments, has been believed to be robust. Attempts to remove it generally have nullified the phenomenological positives. I will argue that in a simple setup, where the right handed gaugino is identified as a (super-) pseudo Goldstone boson, this tachyon is absent. I will present simple realizations of these “Goldstone Gauginos” in strongly coupled SUSY QCD theories and basic comments on the phenomenology.