Bi-large neutrino mixing and the Cabibbo angle

Abstract

Recent measurements of the neutrino mixing angles cast doubt on the validity of the so-far popular tri-bimaximal mixing ansatz. We propose a parametrization for the neutrino mixing matrix where the reactor angle seeds the large solar and atmospheric mixing angles, equal to each other in first approximation. We suggest such bi-large mixing pattern as a model building standard, realized when the leading order value of the reactor angle equals the Cabibbo angle.

4 pages, 2 figs. v2: matches version appearing in Phys.Rev.D, rapid communications

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• Indication of Electron Neutrino Appearance from an Accelerator-produced Off-axis Muon Neutrino Beam
• Global analysis of neutrino masses, mixings and phases: entering the era of leptonic CP violation searches
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