Phenomenology of Pure General Gauge Mediation

TL;DR

This paper explores the phenomenology of pure gauge mediation in the MSSM, focusing on the parameter space, spectra, and constraints, with a unique prediction for tan beta and a connection to different SUSY models.

Contribution

It provides a detailed analysis of gauge mediated SUSY-breaking with a strict definition, predicting tan beta and exploring the parameter space between non-split and mildly split SUSY.

Findings

Identifies favored parameter regions consistent with experimental constraints.

Shows spectra interpolate between non-split and mildly split SUSY.

Predicts tan beta as a derived quantity rather than an input.

Abstract

We investigate the phenomenology of general gauge mediation in the MSSM. We apply the strict definition of gauge mediated SUSY-breaking where B_mu is generated only through gauge interactions, and as a result is very close to zero at the messenger scale. In this setup tan beta is a prediction rather than an input. The input parameters are independent scales for the gaugino masses, the scalar masses and the messenger mass in accord with general gauge mediation. We investigate the spectra, the constraints on the parameter space from direct searches and indirect observables, as well as fine-tuning. The favoured region of parameter space includes and interpolates between non-split and mildly split SUSY, characteristic of ordinary gauge mediation and direct gauge mediation models, respectively.