Hierarchical Neutrino Mass Matrices, CP violation and Leptogenesis

Details Hierarchical Neutrino Mass Matrices, CP violation and Leptogenesis Hierarchical Neutrino Mass Matrices, CP violation and Leptogenesis

2003-07-04

arxiv.org/abs/hep-ph/0307071v3

JHEP 0310 (2003) 035

Physics

High Energy Physics

High Energy Physics - Phenomenology

34 pages. Replaced with published version -typos, corrections and references added

Scientific paper

10.1088/1126-6708/2003/10/035

In this work we study examples of hierarchical neutrino mass matrices inspired by family symmetries, compatible with experiments on neutrino oscillations, and for which there is a connection among the low energy CP violation phase associated to neutrino oscillations, the phases appearing in the amplitude of neutrinoless double beta decay, and the phases relevant for leptogenesis. In particular, we determine the predictions from a texture based on an underlying SU(3) family symmetry together with a GUT symmetry, and a strong hierarchy for the masses of the heavy right handed Majorana masses. We also give some examples of inverted hierarchies of neutrino masses, which may be motivated in the context of U(1) family symmetries.

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