Leptogenesis in the type III seesaw mechanism

Details Leptogenesis in the type III seesaw mechanism Leptogenesis in the type III seesaw mechanism

2003-12-16

arxiv.org/abs/hep-ph/0312224v2

Phys.Rev.D69:073010,2004

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages including one figure, several references added

Scientific paper

10.1103/PhysRevD.69.073010

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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