Singlet-Stabilized Minimal Gauge Mediation

TL;DR

This paper introduces a minimal gauge mediation model based on ISS that stabilizes the vacuum using a singlet sector, avoiding light gauginos and Landau poles, and provides new model-building insights.

Contribution

It presents a novel ISS-based gauge mediation model with singlet stabilization, addressing issues of gaugino mass and Landau poles, and offers guidelines for stabilizing uplifted ISS models.

Findings

Achieves vacuum stabilization via singlet coupling with non-renormalizable interactions.

Avoids light gauginos and Landau poles in gauge mediation.

Provides model-building rules emphasizing meson deformations.

Abstract

We propose Singlet Stabilized Minimal Gauge Mediation as a simple ISS-based model of Direct Gauge Mediation which avoids both light gauginos and Landau poles. The hidden sector is a massive s-confining SQCD that is distinguished by a minimal SU(5) flavor group. The uplifted vacuum is stabilized by coupling the meson to an additional singlet sector with its own U(1) gauge symmetry via non-renormalizable interactions suppressed by a higher scale Lambda_UV in the electric theory. This generates a nonzero VEV for the singlet meson via the inverted hierarchy mechanism, but requires tuning to a precision ~ (Lambda/Lambda_UV)^2, which is ~ 10^{-4}. In the course of this analysis we also outline some simple model-building rules for stabilizing uplifted ISS models, which lead us to conclude that meson deformations are required (or at least heavily favored) to stabilize the adjoint component of the magnetic meson.