Neutrinos: How Do They Mix and Violate CP ?

Details Neutrinos: How Do They Mix and Violate CP ? Neutrinos: How Do They Mix and Violate CP ?

2000-05-16

arxiv.org/abs/hep-ph/0005148v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

LaTex 10 pages (frascatiphys.sty). Talk given (by H.F.) at the 14th Rencontres de Physique de la Vallee d'Aoste, La Thuile, Ao

Scientific paper

We discuss a simple model of lepton mixing and CP violation based on the flavor democracy of charge leptons and the mass degeneracy of neutrinos. A nearly bi-maximal flavor mixing pattern, which is favored by current data on atmospheric and solar neutrino oscillations, emerges naturally from this model after explicit symmetry breaking. The rephasing-invariant strength of CP or T violation can be as large as one percent, leading to significant probability asymmetries between \nu_\mu \to \nu_e and \bar{\nu}_\mu \to \bar{\nu}_e (or \nu_e \to \nu_\mu) transitions in the long-baseline neutrino experiments. The possible matter effects on CP- and T-violating asymmetries are also taken into account.

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