A Gauge-Mediation Model of Dynamical SUSY Breaking with a Wide Range of the Gravitino Mass
K.-I. Izawa, Yasunori Nomura, and T. Yanagida
TL;DR
This paper presents a gauge-mediation model for dynamical supersymmetry breaking that allows the gravitino mass to vary widely from 0.1 eV to 10 GeV, with potential cosmological and experimental implications.
Contribution
It introduces a new gauge-mediation model enabling a broad range of gravitino masses while maintaining a stable vacuum, addressing cosmological stability concerns.
Findings
Gravitino mass can range from 0.1 eV to 10 GeV in the model.
The model's vacuum is stable and free from runaway instability.
Lower gravitino masses (~100 keV or less) are relevant for experiments and cosmology.
Abstract
We provide a gauge-mediation model of dynamical supersymmetry breaking where the gravitino mass takes a value in a wide range from 0.1 eV to 10 GeV. The lower mass region of order 100 keV or less deserves experimental and cosmological interests. The vacuum of our model is a true one without runaway instability, which may be desirable in a cosmological evolution of the universe.
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