Minimal seesaw mechanism

Details Minimal seesaw mechanism Minimal seesaw mechanism

2003-03-10

arxiv.org/abs/hep-ph/0303074v3

Phys.Lett. B572 (2003) 50-55

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages, RevTex4. Revised

Scientific paper

10.1016/j.physletb.2003.07.087

In the framework of the seesaw mechanism, and adopting a typical form for the Dirac neutrino mass matrix, we discuss the impact of minimal forms of the Majorana neutrino mass matrix. These matrices contain four or three texture zeros and only two parameters, a scale factor and a hierarchy parameter. Some forms are not compatible with large lepton mixing and are ruled out. Moreover, a normal mass hierarchy for neutrinos is predicted.

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