Neutrino mass hierarchy and the origin of leptonic flavor mixing from the right-handed sector

Details Neutrino mass hierarchy and the origin of leptonic flavor mixing from the right-handed sector Neutrino mass hierarchy and the origin of leptonic flavor mixing from the right-handed sector

2011-04-13

arxiv.org/abs/1104.2448v2

Phys.Rev.D84:017303,2011

Physics

High Energy Physics

High Energy Physics - Phenomenology

6 pages, 2 figures

Scientific paper

10.1103/PhysRevD.84.017303

We consider a neutrino mass model where all leptonic mixing is induced by a heavy Majorana sector through the seesaw type I mechanism, while the Dirac mass matrices are diagonal. Such a pattern occurs naturally in grand unified theories. Constraints on the parameters of the models are considered and it is shown that a normal neutrino mass hierarchy is preferred. The lightest neutrino mass is typically small, leading to nonobservable rates for neutrinoless double beta decay in the normal hierarchy case.

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