0 SO ( 10 ) and Large ν μ − ν τ Mixing

Minimal Schemes for Large Neutrino Mixings with Inverted Hierarchy

Existing oscillation data point to nonzero neutrino masses with large mixings. We analyze the generic features of the neutrino Majorana mass matrix with inverted hierarchy and construct a realistic minimal scheme for the neutrino mass matrix that can explain the large (but not maximal) ν e − ν μ mixing of MSW-LAM as well as the nearly maximal ν μ − ν τ mixing and the small (or negligible) ν e →...

Autogenous Neutrino Mixing

In the supersymmetric seesaw model of neutrino masses, augmented by the nonAbelian discrete tetrahedral symmetry A4, a specific pattern of neutrino mixing is automatically generated if one of the three heavy singlet neutrino superfields acquires a nonzero vacuum expectation value. This pattern turns out to be exactly that of tribimaximal mixing, i.e. sin θ23 = 1/2, sin 2 θ12 = 1/3, and sin 2 θ1...

Tribimaximal neutrino mixing from a supersymmetric model with A4 family symmetry

In the supersymmetric seesaw model of neutrino masses, augmented by the nonAbelian discrete tetrahedral symmetry A4, a specific pattern of neutrino mixing is automatically generated if one of the three heavy singlet neutrino superfields acquires a nonzero vacuum expectation value. This pattern turns out to be exactly that of tribimaximal mixing, i.e. sin θ23 = 1/2, sin 2 θ12 = 1/3, and sin 2 θ1...

Inflation , the μ Problem and Maximal ν μ − ν τ Mixing

Large ν μ → ν τ and ν e → ν τ transitions in short - baseline experiments ?

Considering four-neutrino schemes of type 3+1, we identify four small regions of the neutrino mixing parameter space compatible with all data. Assuming a small mixing between the sterile neutrino and the isolated mass eigenstate we show that large νμ → ντ and νe → ντ transitions are predicted in short-baseline experiments and could be observed in the near future in dedicated experiments. We dis...