Majorana Neutrino Masses from Anomalous U(1) Symmetries

Abstract

We explore the possibility of interpreting the solar and atmospheric neutrino data within the context of the Minimal Supersymmetric Standard Model augmented by a single U(1) anomalous family symmetry spontaneously broken by non-zero vacuum expectation values of a pair of singlet fields. The symmetry retains a dimension-five operator which provides Majorana masses for left-handed neutrino states. Assuming symmetric lepton mass matrices, the model predicts inverse hierarchical neutrino mass spectrum, theta_{13}=0 and large mixing while at the same time it provides acceptable mass matrices for the charged fermions.

14 pages, no figures

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• Scaling in the Neutrino Mass Matrix
• 'Mu-Tau' symmetry, tribimaximal mixing and four zero neutrino Yukawa textures
• Neutrinoless Double Beta Decay and Future Neutrino Oscillation Precision Experiments
• Inverted Mass Hierarchy from Scaling in the Neutrino Mass Matrix: Low and High Energy Phenomenology
• Breaking of L_mu - L_tau Flavor Symmetry, Lepton Flavor Violation and Leptogenesis
• Constraining Mass Spectra with Sterile Neutrinos from Neutrinoless Double Beta Decay, Tritium Beta Decay and Cosmology
• Lepton Masses in a Minimal Model with Triplet Higgs Bosons and $S_3$ Flavor Symmetry
• Soft breaking of $L_{\mu }-L_{\tau }$ symmetry: Light neutrino spectrum and Leptogenesis
• Scaling in the Neutrino Mass Matrix, mu-tau Symmetry and the See-Saw Mechanism
• Masses, mixing angles and phases of general Majorana neutrino mass matrix
• Predictive Model of Inverted Neutrino Mass Hierarchy and Resonant Leptogenesis
• Large and Almost Maximal Neutrino Mixing within the Type II See-Saw Mechanism
• Conserving the lepton number $L_e-L_{\mu }-L_{\tau }$ in the exact solution of a 3-3-1 gauge model with right-handed neutrinos
• Modified Zee mass matrix with zero-sum condition
• Neutrino Mass Squared Differences in the Exact Solution of a 3-3-1 Gauge Model without Exotic Electric Charges
• Systematic Study Of Leptonic Mixing In A Class Of SU_H(2) Models
• Theta_{13}, Rare Decays and Leptonic CP Violation
• Fixing the Solar Neutrino Parameters with Sterile Neutrinos
• The exact eigenstates of the neutrino mass matrix without CP-phase violation
• Inverted neutrino mass hierarchies from U(1) symmetries
• Renormalization effects on neutrino masses and mixing in a string-inspired SU(4) X SU(2)_L X SU(2)_R X U(1)_X model
• Neutrino and Multidimensional Theories of Fundamental Interactions
• Running neutrino masses and mixing in a SU(4) x SU(2)^2 x U(1)_X model