Leptogenesis with almost degenerate Majorana neutrinos

被引：101
|
作者：
Fujii, M [1 ]
Hamaguchi, K
Yanagida, T
机构：
[1] Univ Tokyo, Dept Phys, Tokyo 1130033, Japan
[2] Univ Tokyo, Res Ctr Early Universe, Tokyo 1130033, Japan
来源：
PHYSICAL REVIEW D | 2002年 / 65卷 / 11期
关键词：
D O I：
10.1103/PhysRevD.65.115012
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We investigate leptogenesis with almost degenerate neutrinos in the framework of the democratic mass matrix, which naturally explains the large mixing angles for neutrino oscillations as well as quark masses and the 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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页数：8
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