Neutrino Mass Models with an Abelian Family Symmetry

Details Neutrino Mass Models with an Abelian Family Symmetry Neutrino Mass Models with an Abelian Family Symmetry

1996-10-05

arxiv.org/abs/hep-ph/9610257v1

NATO Adv.Study Inst.Ser.B Phys.363:229-236,1997

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, LaTeX, to appear in the proceedings of the NATO ASI on Masses of Fundamental Particles, Carg\`ese, France, August 5-

Scientific paper

Abelian family symmetries provide a predictive framework for neutrino mass models. In seesaw models based on an abelian family symmetry, the structures of the Dirac and the Majorana matrices are derived from the symmetry, and the neutrino masses and mixing angles are determined by the lepton charges under the family symmetry. Such models can lead to mass degeneracies and large mixing angles as well as mass hierarchies, the squared mass difference between quasi-degenerate neutrinos being determined by the symmetry. We present two models illustrating this approach.

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