The Minimal Supersymmetric Leptogenesis

Details The Minimal Supersymmetric Leptogenesis The Minimal Supersymmetric Leptogenesis

1999-08-02

arxiv.org/abs/hep-ph/9908223v2

JHEP 0007:009,2000

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages, references added, typos corrected

Scientific paper

10.1088/1126-6708/2000/07/009

We reanalyze the supersymmetric leptogenesis model by one of the authors (HM) and Yanagida based on \tilde{L} = H_u flat direction in detail. We point out that the appropriate amount of baryon asymmetry can be generated in this model with the neutrino mass matrix consistent with the atmospheric neutrino oscillation and solutions to the solar neutrino problem, preferably the small angle MSW solution. The reheating temperature can be low enough to avoid the cosmological gravitino problem. This model is the minimal one because it does not rely on any new physics beyond supersymmetry and Majorana neutrino masses.

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