Phenomenological implication of KamLAND on lepton mass matrices

Details Phenomenological implication of KamLAND on lepton mass matrices Phenomenological implication of KamLAND on lepton mass matrices

2003-05-15

arxiv.org/abs/hep-ph/0305169v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

Proceedings of the XXXVIIIth Rencontres de Moriond, ElectroWeak Interactions and Unified Theories, 15-22 March 2003, Les Arcs,

Scientific paper

By using a model independent Monte Carlo approach, we study the possible structure of charged and neutral lepton mass matrices, under the assumption of an U(2) horizontal symmetry (additional to the usual Standard Model ones) involving the light fermion generations. We assume the most general Majorana mass matrix for neutrinos. We update the results of our previous similar study, by inserting in the analysis the recent KamLAND data, that contributed to find a final solution to the Solar neutrino problem. The introduction of the new experimental data reduce the allowed regions in the nine dimensional space parameters, and show that our procedure gives stable solutions.

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