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Natural Gravitino Dark Matter and Thermal Leptogenesis in Gauge-Mediated Supersymmetry-Breaking Models
We point out that there is no cosmological gravitino problem in a certain class of gauge-mediated supersymmetry-breaking (GMSB) models. The constant term in the superpotential naturally causes small mixings between the standard-model and messenger fields, which give rise to late-time decays of the l...
| Autores principales: | , |
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| Lenguaje: | eng |
| Publicado: |
2002
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| Materias: | |
| Acceso en línea: | https://dx.doi.org/10.1016/S0370-2693(02)02958-1 http://cds.cern.ch/record/577340 |