Stability and leptogenesis in the left-right symmetric seesaw mechanism

被引：10

作者：

Akhmedov, Evgeny ^{[1
]}

Blennow, Mattias ^{[1
]}

Hallgren, Tomas ^{[1
]}

Konstandin, Thomas ^{[1
]}

Ohlsson, Tommy ^{[1
]}

机构：

[1] AlbaNova Univ Ctr, Royal Inst Technol, Dept Theoret Phys, Sch Engn Sci, Roslagstullsbacken 21, S-10691 Stockholm, Sweden

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2007年 / 04期

关键词：

baryogenesis; neutrino physics; NEUTRINO MASS; THERMAL LEPTOGENESIS; ENHANCEMENT; QUARK;

D O I：

10.1088/1126-6708/2007/04/022

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

We analyze the left-right symmetric type I+II seesaw mechanism, where an eight-fold degeneracy among the mass matrices of heavy right-handed neutrinos M-R is known to exist. Using the stability property of the solutions and their ability to lead to successful baryogenesis via leptogenesis as additional criteria, we discriminate among these eight solutions and partially lift their eight-fold degeneracy. In particular, we find that viable leptogenesis is generically possible for four out of the eight solutions.

引用

页数：24

共 37 条

[1] Duality in left-right symmetric seesaw mechanism - art. no. 061802 [J].