Flavour from accidental symmetries

Details Flavour from accidental symmetries Flavour from accidental symmetries

2006-09-05

arxiv.org/abs/hep-ph/0609047v2

JHEP0611:078,2006

Physics

High Energy Physics

High Energy Physics - Phenomenology

15 pages, 1 eps figure, references added

Scientific paper

10.1088/1126-6708/2006/11/078

We consider a new approach to fermion masses and mixings in which no special "horizontal" dynamics is invoked to account for the hierarchical pattern of charged fermion masses and for the peculiar features of neutrino masses. The hierarchy follows from the vertical, family-independent structure of the model, in particular from the breaking pattern of the Pati-Salam group. The lightness of the first two fermion families can be related to two family symmetries emerging in this context as accidental symmetries.

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