On the Diversity of Gauge Mediation: Footprints of Dynamical SUSY Breaking

TL;DR

This paper explores the phenomenological implications of minimal direct gauge mediation models with dynamical supersymmetry breaking, highlighting new particles, altered mass hierarchies, and deviations from the MSSM.

Contribution

It presents a detailed analysis of the phenomenology of direct gauge mediation with dynamical SUSY breaking, revealing distinctive predictions and mass patterns.

Findings

Presence of new particles comparable to Standard Model superpartners

Gaugino masses are lighter than sfermions, with different ratios from standard models

Departure from the MSSM due to pseudo-Goldstone modes

Abstract

Recent progress in realising dynamical supersymmetry breaking allows the construction of simple and calculable models of gauge mediation. We discuss the phenomenology of the particularly minimal case in which the mediation is direct, and show that there are generic new and striking predictions. These include new particles with masses comparable to those of the Standard Model superpartners, associated with the pseudo-Goldstone modes of the dynamical SUSY breaking sector. Consequently there is an unavoidable departure from the MSSM. In addition the gaugino masses are typically significantly lighter than the sfermions, and their mass ratios can be different from the pattern dictated by the gauge couplings in standard (i.e. explicit) gauge mediation. We investigate these features in two distinct realisations of the dynamical SUSY breaking sector.