Notes on SUSY and R-Symmetry Breaking in Wess-Zumino Models

TL;DR

This paper explores SUSY and R-symmetry breaking in Wess-Zumino models, providing a construction method and explaining light gaugino masses in gauge mediation, with implications for dynamical SUSY breaking.

Contribution

It introduces a recipe for building tree-level SUSY and R-breaking models and uncovers a general property affecting gaugino masses in gauge mediation.

Findings

A broad class of models for SUSY and R-breaking at tree level.

A property explaining light gauginos in direct gauge mediation.

Potential new approaches for dynamical SUSY breaking.

Abstract

We study aspects of Wess-Zumino models related to SUSY and R-symmetry breaking at tree-level. We present a recipe for constructing a wide class of tree-level SUSY and R-breaking models. We also deduce a general property shared by all tree-level SUSY breaking models that has broad application to model building. In particular, it explains why many models of direct gauge mediation have anomalously light gauginos (even if the R-symmetry is broken spontaneously by an order one amount). This suggests new approaches to dynamical SUSY breaking which can generate large enough gaugino masses.