Direct Mediation and a Visible Metastable Supersymmetry Breaking Sector

TL;DR

This paper presents a weakly coupled, calculable model of metastable supersymmetry breaking with observable sector features, including a light gravitino and potential dark matter candidate, with implications for LHC detection.

Contribution

It introduces an R-symmetry breaking deformation of the ISS model enabling direct mediation with an observable supersymmetry breaking sector.

Findings

Light gravitino with mass <16 eV

Natural MSSM spectrum with a light Higgs

Observable supersymmetry breaking sector at ~1 TeV

Abstract

We analyze an R-symmetry breaking deformation of the ISS model for a direct mediation of supersymmetry breaking from a metastable vacuum. The model is weakly coupled and calculable. The LSP gravitino is light (m_{3/2}<16 eV) and the MSSM spectrum is natural with a light Higgs. The supersymmetry breaking sector, which is usually hidden, is observable (m~1 TeV) and may be a candidate for cold dark matter. We discuss its production and signature at LHC. We propose a UV completion of the model in terms of a duality cascade.