Dark Matter and Pseudo-flat Directions in Weakly Coupled SUSY Breaking Sectors

TL;DR

This paper explores dark matter candidates within weakly coupled gauge mediated supersymmetry breaking models, highlighting pseudo-flat directions and heavy gravitino scenarios as potential sources of cold dark matter.

Contribution

It introduces a novel mechanism involving pseudo-flat directions for dark matter production in calculable SUSY breaking models.

Findings

Pseudo-flat directions receive TeV-scale masses and can account for dark matter.

Heavy gravitino dark matter is a viable possibility in these models.

The models provide a calculable framework for dark matter phenomenology.

Abstract

We consider candidates for dark matter in models of gauge mediated supersymmetry breaking, in which the supersymmetry breaking sector is weakly coupled and calculable. Such models typically contain classically flat directions, that receive one-loop masses of a few TeV. These pseudo-flat directions provide a new mechanism to account for the cold dark matter relic abundance. We discuss also the possibility of heavy gravitino dark matter in such models.