Revisiting R-invariant Direct Gauge Mediation

TL;DR

This paper reexamines R-invariant direct gauge mediation, assessing its compatibility with the minimal term and experimental constraints, deriving gluino mass limits, and exploring its potential to explain collider anomalies.

Contribution

It demonstrates that the minimal term can be compatible with R-invariant gauge mediation through parameter tuning and derives an upper gluino mass limit based on Higgs mass data.

Findings

Minimal term can be consistent with the model with proper parameters.

An upper limit on gluino mass is established from Higgs mass constraints.

The model's potential to explain ATLAS Z+jets+T^{miss} excess is discussed.

Abstract

We revisit a special model of gauge mediated supersymmetry breaking, the "R-invariant direct gauge mediation." We pay particular attention to whether the model is consistent with the minimal model of the \mu-term, i.e., a simple mass term of the Higgs doublets in the superpotential. Although the incompatibility is highlighted in view of the current experimental constraints on the superparticle masses and the observed Higgs boson mass, the minimal \mu-term can be consistent with the R-invariant gauge mediation model via a careful choice of model parameters. We derive an upper limit on the gluino mass from the observed Higgs boson mass. We also discuss whether the model can explain the 3\sigma excess of the Z+jets+$E_T^{\rm miss}$ events reported by the ATLAS Collaboration.