Degenerate and quasidegenerate Majorana neutrinos

被引：109

作者：

Branco, GC

Rebelo, MN

Silva-Marcos, JI

机构：

[1] Univ Tecn Lisboa, Ctr Fis Interaccoes Fundamentais, Inst Super Tecn, P-1096 Lisbon, Portugal

[2] NIKHEF H, NL-1098 SJ Amsterdam, Netherlands

来源：

PHYSICAL REVIEW LETTERS | 1999年 / 82卷 / 04期

关键词：

D O I：

10.1103/PhysRevLett.82.683

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study mixing and CP violation of three left-handed Majorana neutrinos in the limit of exactly degenerate masses, identify the weak-basis invariant relevant for CP violation, and show that the leptonic mixing matrix is parametrized only by two angles and one phase. After the lifting of the degeneracy, this parametrization accommodates the present data on atmospheric and solar neutrinos, as well as double beta decay. Some of the leptonic mixing Ansatze suggested in the literature correspond to special cases of this parametrization.

引用

页码：683 / 686

页数：4

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