Soft leptogenesis and gravitino dark matter in gauge mediation

Koichi Hamaguchi, Norimi Yokozaki

Research output: Contribution to journalArticle

3 Citations (Scopus)

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 languageEnglish
Pages (from-to)398-401
Number of pages4
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume694
Issue number4-5
DOIs
Publication statusPublished - 2011 Jan 3
Externally publishedYes

Keywords

  • Gravitino dark matter
  • Leptogenesis

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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