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arXiv · 0809.3573

Fermion masses and mixing in models with SO(10) x A_4 symmetry

Federica Bazzocchi·Michele Frigerio·Stefano Morisi
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Abstract

We study the flavour sector in models where the three families of matter are unified in a $(16,3)$ representation of the $SO(10)\times A_4$ group. The necessary ingredients to realize tri-bi-maximal mixing in the lepton sector are identified systematically. The non-renormalizable operators contributing to the fermion mass matrices play an important role. We also present a mechanism to explain the inter-family mass hierarchy of quarks and charged leptons, which relies on a `universal seesaw' mechanism and is compatible with tri-bi-maximal mixing.

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Federica Bazzocchi, Michele Frigerio, Stefano Morisi. 2008-09-21. Fermion masses and mixing in models with SO(10) x A_4 symmetry. https://doi.org/10.1103/physrevd.78.116018

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