Unscreening the Gaugino Mass with Chiral Messengers

TL;DR

This paper demonstrates that in semi-direct gauge mediation models, introducing a chiral messenger sector can prevent gaugino screening, allowing gauginos to acquire mass through mechanisms like higgsing or strong dynamics.

Contribution

It introduces a novel approach to avoid gaugino screening in gauge mediation by using chiral messengers, with an explicit model implementation.

Findings

Chiral messenger sectors can prevent gaugino screening.

Gaugino masses can be generated via higgsing or strong coupling.

Explicit model demonstrates the feasibility of the approach.

Abstract

Gaugino screening, the absence of next-to-leading order corrections to gaugino masses, is a generic feature of gauge mediation models of supersymmetry breaking. We show that in a specific class of models, known as semi-direct gauge mediation, it is possible to avoid gaugino screening by allowing for a chiral messenger sector. Messengers then acquire a mass at some scale, for instance by higgsing or by some auxiliary strong coupling dynamics. We implement this idea in a simple model which we work out explicitly.