On the Spectrum of Direct Gaugino Mediation

TL;DR

This paper investigates the superpartner spectrum in minimal direct gaugino mediation, revealing that sfermion and gaugino masses can be comparable at low messenger scales, impacting split SUSY models.

Contribution

It provides a detailed analysis of the superpartner spectrum in minimal direct gaugino mediation, highlighting conditions for comparable sfermion and gaugino masses.

Findings

Sfermion masses are comparable to gaugino masses at low messenger scales.

The hybrid gaugino-gauge mediation regime can produce a unified superpartner spectrum.

Implications for split SUSY models are discussed.

Abstract

In direct gauge mediation, the gaugino masses are anomalously small, giving rise to a split SUSY spectrum. Here we investigate the superpartner spectrum in a minimal version of "direct gaugino mediation." We find that the sfermion masses are comparable to those of the gauginos - even in the hybrid gaugino-gauge mediation regime - if the messenger scale is sufficiently small.