A Statistical Approach to Leptonic Mixings and Neutrino Masses

Details A Statistical Approach to Leptonic Mixings and Neutrino Masses A Statistical Approach to Leptonic Mixings and Neutrino Masses

2001-11-28

arxiv.org/abs/hep-ph/0111373v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 pages, 1 figure. Presented at the XI-th International School "Particles and Cosmology" April 18-24, 2001, Baksan Valley

Scientific paper

Based on existing data, we argue for a peculiar structure of the neutrino mass matrix, that has a block of relatively large elements--a dominant block. We analyze this ansatz and extract its predictions, assuming that the O(1) coefficients (that are needed to define the model fully) are random variables. Further insights are obtained by postulating that this structure of the mass matrix is due to U(1) selection rules, a la Froggatt and Nielsen. A particularly interesting case emerges, when the angle theta(13) (namely, the mixing U(e3)) is within reach for next generation experiments, and the large mixing angle solution for solar neutrinos is the preferred one.

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