Abstract
We study soft leptogenesis in gauge mediated supersymmetry breaking models with an enhanced A-term for the right-handed neutrino. We find that this scenario can explain the baryon asymmetry of the present universe, consistently with the gravitino dark matter for a wide range of gravitino mass m3/2=O(MeV)-O(GeV). We also propose an explicit model which induces the necessary A-term for the right-handed neutrino.
| Original language | English |
|---|---|
| Pages (from-to) | 398-401 |
| Number of pages | 4 |
| Journal | Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics |
| Volume | 694 |
| Issue number | 4-5 |
| DOIs | |
| Publication status | Published - 2011 Jan 3 |
| Externally published | Yes |
Keywords
- Gravitino dark matter
- Leptogenesis
ASJC Scopus subject areas
- Nuclear and High Energy Physics
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Hamaguchi, K., & Yokozaki, N. (2011). Soft leptogenesis and gravitino dark matter in gauge mediation. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 694(4-5), 398-401. https://doi.org/10.1016/j.physletb.2010.10.031