Leptogenesis in the type III seesaw mechanism

被引：53
作者：
Albright, CH [1 ]
Barr, SM
机构：
[1] No Illinois Univ, Dept Phys, De Kalb, IL 60115 USA
[2] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA
[3] Univ Delaware, Bartol Res Inst, Newark, DE 19716 USA
来源：
PHYSICAL REVIEW D | 2004年 / 69卷 / 07期
关键词：
D O I：
10.1103/PhysRevD.69.073010
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
It is shown that the type III seesaw mechanism proposed recently can have certain advantages over the conventional (or type I) seesaw mechanism for leptogenesis. In particular a resonant enhancement of leptogenesis via heavy quasi-Dirac right-handed neutrino pairs can occur without a special flavor form or "texture" of the mass matrices being assumed. Some of the requirements for neutrino mixing and leptogenesis are effectively decoupled.
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