Degenerate Neutrinos in Left Right Symmetric Theory

Abstract

Various hints on the neutrino masses namely, ({\em i}) the solar neutrino deficit ({\em ii}) the atmospheric neutrino deficit ({\em iii}) the need for the dark matter and/or ({\em iv}) the non-zero neutrinoless double beta decay collectively imply that all the three neutrinos must be nearlty degenerate. This feature can be understood in the left right symmetric theory. We present a model based on the group $SU(2{)}_L\times SU(2{)}_R\times U(1{)}_{B-L}\times SU(2{)}_H$ which can explain the required departures from degeneracy in neutrino masses and large mixing among them without assuming any of the mixing in the quark or charged lepton sector to be large as would be expected in a typical $SO(10)$ model.

PRL-TH-94/08; (LATEX file)

References in corpus (6)

• Predictive Neutrino Spectrum in Minimal $SO(10)$ Grand Unification
• See-saw Enhancement of Lepton Mixing
• An SO(10)XS-4 Scenario for Naturally Degenerate Neutrinos
• SO(10) grand unification model for degenerate neutrino masses
• Accomodating Solar and Atmospheric Neutrino Deficits, Hot Dark Matter, and a Double Beta Decay Signal
• Naturally Degenerate Neutrinos

Cited by in corpus (17)

• Theory of Neutrinos: A White Paper
• Neutrino Mass Spectrum with ${\nu }_{\mu }$ $\to$ ${\nu }_s$ Oscillations of Atmospheric Neutrinos
• Supernova Bounds on Resonant Active-Sterile Neutrino Conversions
• From Hierarchical to Partially Degenerate Neutrinos via Type II Upgrade of Type I See-Saw Models
• Dark Matter Neutrinos Must Come with Degenerate Masses
• Permutation Symmetry for Neutrino and Charged-Lepton Mass Matrices
• Stability of Neutrino Mass Degeneracy
• Cold Plus Hot Dark Matter Cosmology in the Light of Solar and Atmospheric Neutrino Oscillations
• Physics of Neutrino Mass
• Leptogenesis in Unified Theories with Type II See-Saw
• A Two Parameter Texture of Nearly Bi-maximal Neutrino Mixing
• Type I seesaw mechanism for quasi degenerate neutrinos
• Testing leptonic SU(2) horizontal symmetry using neutrino mixings
• Simple Connection Between Atmospheric and Solar Neutrino Vacuum Oscillations
• Degenerate Dirac Neutrinos
• Quasi-degenerate neutrinos in SO(10)
• Quasi-Degenerate Neutrino Masses in Terms of Mass-Squared Differences