Leptogenesis with Almost Degenerate Majorana Neutrinos
High Energy Physics - Phenomenology
2009-11-07 v1
Abstract
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.
Keywords
Cite
@article{arxiv.hep-ph/0202210,
title = {Leptogenesis with Almost Degenerate Majorana Neutrinos},
author = {Masaaki Fujii and K. Hamaguchi and T. Yanagida},
journal= {arXiv preprint arXiv:hep-ph/0202210},
year = {2009}
}
Comments
17 pages, LaTeX, 2 figures