Neutrinos: How Do They Mix and Violate CP ?
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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 ν_μ\to ν_e and \barν_μ\to \barν_e (or ν_e \to ν_μ) transitions in the long-baseline neutrino experiments. The possible matter effects on CP- and T-violating asymmetries are also taken into account.
LaTex 10 pages (frascatiphys.sty). Talk given (by H.F.) at the 14th Rencontres de Physique de la Vallee d'Aoste, La Thuile, Aosta Valley, Italy, February 2000
LaTex 10 pages (frascatiphys.sty). Talk given (by H.F.) at the 14th Rencontres de Physique de la Vallee d'Aoste, La Thuile, Aosta Valley, Italy, February 2000