Superpartner spectrum of minimal gaugino-gauge mediation

TL;DR

This paper analyzes the superpartner mass spectrum in a minimal gaugino-gauge mediation model, revealing unique slepton mass patterns that could produce detectable LHC signatures.

Contribution

It provides a detailed evaluation of the sparticle spectrum in a hybrid gauge mediation model, highlighting novel slepton mass hierarchies.

Findings

Left- and right-handed sleptons are lighter than the bino in low-scale mediation.

Distinct lepton production signatures are predicted at the LHC.

Hybrid mediation effects influence superpartner mass patterns.

Abstract

We evaluate the sparticle mass spectrum in the minimal four-dimensional construction that interpolates between gaugino and ordinary gauge mediation at the weak scale. We find that even in the hybrid case -- when the messenger scale is comparable to the mass of the additional gauge particles -- both the right-handed as well as the left-handed sleptons are lighter than the bino in the low-scale mediation regime. This implies a chain of lepton production and, consequently, striking signatures that may be probed at the LHC already in the near future.