Neutrino Masses and Mixing Angles in a Realistic String-Inspired Model

Abstract

We analyse a supersymmetric string-inspired model of all fermion masses and mixing angles based on the Pati-Salam $SU(4)\times SU(2{)}_L\times SU(2{)}_R$ gauge group supplemented by a $U(1{)}_X$ flavour symmetry. The model involves third family Yukawa unification and predicts the top mass and the ratio of the vacuum expectation values $\tan \beta$. The model also provides a successful description of the CKM matrix and predicts the masses of the down and strange quarks. However our main focus is on the neutrino masses and MNS mixing angles, and we show how the recent atmospheric neutrino mixing observed by Super-Kamiokande, and the MSW solution to the solar neutrino problem lead to important information about the flavour structure of the model near the string scale. We show how single right-handed neutrino dominance may be implemented by the use of ``Clebsch zeros'', leading to the LMA MSW solution, corresponding to bi-maximal mixing. The LOW MSW and SMA MSW solutions are also discussed.

53 pages, Latex

References in corpus (11)

• Limits on Neutrino Oscillations from the CHOOZ Experiment
• Large Mixing Angle MSW and Atmospheric Neutrinos from Single Right-Handed Neutrino Dominance and U(1) Family Symmetry
• Atmospheric and Solar Neutrinos from Single Right-Handed Neutrino Dominance and U(1) Family Symmetry
• A General Classification of Three-Neutrino Models and U_e3
• Large Neutrino Mixing from Small Quark and Lepton Mixings
• Is Large Mixing Angle MSW the Solution of the Solar Neutrino Problems?
• Renormalisation Group Analysis of Single Right-handed Neutrino Dominance
• Explicit SO(10) Supersymmetric Grand Unified Model for the Higgs and Yukawa Sectors
• Bi-maximal Neutrino Mixings And Proton Decay In SO(10) With Anomalous Flavor $\mathcal{U}(1)$
• Neutrino Masses, Mixing Angles and the Unification of Couplings in the MSSM
• Yukawa Unification as a Window into the Soft Supersymmetry Breaking Lagrangian

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