Leptogenesis with Almost Degenerate Majorana Neutrinos

Details Leptogenesis with Almost Degenerate Majorana Neutrinos Leptogenesis with Almost Degenerate Majorana Neutrinos

2002-02-22

arxiv.org/abs/hep-ph/0202210v1

Phys.Rev. D65 (2002) 115012

Physics

High Energy Physics

High Energy Physics - Phenomenology

17 pages, LaTeX, 2 figures

Scientific paper

10.1103/PhysRevD.65.115012

We investigate the leptogenesis with almost degenerate neutrinos, in the framework of democratic mass matrix, which naturally explains the large mixing angles for neutrino oscillations as well as quark masses and mixing matrix. We find that the baryon asymmetry in the present universe is explained via the decays of right-handed neutrinos produced nonthermally by the inflaton decay. The model predicts neutrinoless double beta decays accessible in near future experiments.

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