Neutrino Masses and Mixings from Quark Mass Hierarchies

Details Neutrino Masses and Mixings from Quark Mass Hierarchies Neutrino Masses and Mixings from Quark Mass Hierarchies

2007-10-11

arxiv.org/abs/0710.2186v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

Submitted for the SUSY07 proceedings, 4 pages

Scientific paper

In SO(10) models with a vectorial fourth generation of down quarks and leptons, the structure of the neutrino Majorana and Dirac mass matrices generically coincide with those of up- and down-quarks, respectively. Then the small neutrino mass hierarchy follows from the mismatch of the up and down quark mass hierarchies and we can accommodate naturally a normal hierarchy. The effective CP violating phases in the quark sector, neutrino oscillations and leptogenesis are unrelated.

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