Meta-stable SUSY Breaking Model in Supergravity

TL;DR

This paper studies a simple supergravity-based supersymmetry breaking model that naturally generates non-zero vacuum expectation values and predicts a specific mass hierarchy between sfermions and gauginos.

Contribution

It provides a supergravity framework for the Intriligator-Seiberg-Shih model without extra interactions or gauge symmetries, highlighting the role of U(1)R symmetry breaking.

Findings

Pseudo-moduli acquire non-zero VEVs under vanishing cosmological constant.

Sfermions are predicted to be heavier than gauginos.

The strong-coupling scale is linked to the sfermion-to-gaugino mass ratio.

Abstract

We analyze a supersymmetry (SUSY) breaking model proposed by Intriligator, Seiberg and Shih in a supergravity (SUGRA) framework. This is a simple and natural setup which demands neither extra superpotential interactions nor an additional gauge symmetry. In the SUGRA setup, the U(1)R symmetry is explicitly broken by the constant term in the superpotential, and pseudo-moduli field naturally takes non-zero vacuum expectation value through a vanishing cosmological constant condition. Sfermions tend to be heavier than gauginos, and the strong-coupling scale is determined once a ratio of sfermion to gaugino masses is fixed.