Dynamical mu Term in Gauge Mediation

TL;DR

This paper proposes a solution to the mu problem in gauge mediation by introducing a singlet superfield, analyzing the resulting soft terms, and exploring phenomenological implications including distinct collider signatures.

Contribution

It introduces a new approach to the mu problem in gauge mediation using a singlet superfield and studies its phenomenological consequences.

Findings

Identifies three parameter regions with distinct mass spectra.

Provides constraints from Higgs mass bounds.

Predicts unique collider signatures for the model.

Abstract

We address the mu problem of gauge mediation by considering a singlet chiral superfield coupled to the Higgs and messenger fields. We compute the soft terms generated below the messenger scale and study the phenomenological consequences of the model. The experimental bound on the Higgs mass provides a severe constraint that identifies three special regions of parameters where the mass spectrum and the collider signatures can be distinct from ordinary gauge mediation.