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Supersymmetric Leptogenesis and the Gravitino Bound
Supersymmetric thermal leptogenesis with a hierarchical right-handed neutrino mass spectrum requires the mass of the lightest right-handed neutrino to be heavier than about 10^9 GeV. This is in conflict with the upper bound on the reheating temperature which is found by imposing that the gravitinos...
| Autores principales: | , , , |
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| Lenguaje: | eng |
| Publicado: |
2008
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| Materias: | |
| Acceso en línea: | https://dx.doi.org/10.1016/j.physletb.2008.05.009 http://cds.cern.ch/record/1097040 |