Dynamical breaking of U(1)_{R} and supersymmetry in a metastable vacuum

TL;DR

This paper explores how adding a baryon term to the ISS model causes spontaneous R-symmetry breaking, enabling direct supersymmetry breaking mediation to the Standard Model with realistic gaugino masses.

Contribution

It introduces a simple deformation of the ISS model that breaks R-symmetry and demonstrates direct mediation of supersymmetry breaking to the Standard Model.

Findings

R-symmetry is spontaneously broken in the deformed ISS model.

Gaugino masses of the correct order are achievable.

The model suggests a duality with an unknown asymptotically free theory.

Abstract

We consider the metastable N=1 QCD model of Intriligator, Seiberg and Shih (ISS), deformed by adding a baryon term to the superpotential. This simple deformation causes the spontaneous breaking of the approximate R-symmetry of the metastable vacuum. We then gauge the flavour SU(5)_f and identify it with the parent gauge symmetry of the Standard Model (SM). This implements direct mediation of supersymmetry breaking without the need for an additional messenger sector. A reasonable choice of parameters leads to gaugino masses of the right order. Finally, we speculate that the entire ``ISS x SM'' model should be interpreted as a magnetic dual of an (unknown) asymptotically free theory.