U(2) and Maximal Mixing of nu_{mu}

Abstract

A U(2) flavor symmetry can successfully describe the charged fermion masses and mixings, and supress SUSY FCNC processes, making it a viable candidate for a theory of flavor. We show that a direct application of this U(2) flavor symmetry automatically predicts a mixing of 45 degrees for nu_mu to nu_s, where nu_s is a light, right-handed state. The introduction of an additional flavor symmetry acting on the right-handed neutrinos makes the model phenomenologically viable, explaining the solar neutrino deficit as well as the atmospheric neutrino anomaly, while giving a potential hot dark matter candidate and retaining the theory's predictivity in the quark sector.

arXiv comment20 pages, 1 figure

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Cited by in corpus (15)

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• Neutrino Oscillations in a Predictive SUSY GUT
• U(2) Flavor Physics without U(2) Symmetry
• Neutrino mixings from a U(2) flavour symmetry
• Supersymmetric Flavor Models and the B --> phi K_S Anomaly
• Permutation Symmetry for Neutrino and Charged-Lepton Mass Matrices
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• Neutrino Oscillations: Status, Prospects and Opportunities at a Neutrino Factory
• Scenario of Light Sterile Neutrinos with A Heavy Tau Neutrino in A Supersymmetric Model