Textures for Neutrino Mass Matrices

Abstract

We give a classification of heavy Majorana neutrino mass matrices with up to three texture zeroes, assuming the Dirac masses of the neutrinos to be of the same form as the ones of the up-quarks in the five texture zero solutions for the quark matrices. This is the case for many unified and partially unified models. We find that it is possible to have solutions which account for the solar and atmospheric neutrino problems as well as the COBE observations simultaneously, and we motivate the existence of such solutions from symmetries.

27 pages, latex file, no figures

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• Neutrino masses from U(1) symmetries and the Super-Kamiokande data
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• Hybrid textures in minimal seesaw mass matrices
• Neutrino Mass Texture with Large Mixing
• Minimal Textures in Seesaw Mass Matrices and their low and high Energy Phenomenology
• See-saw Mechanisms for Dirac and Majorana Neutrino Masses
• Seesaw mechanism, quark-lepton symmetry and Majorana phases
• Is right-handed neutrino degeneracy compatible with the solar and atmospheric neutrino data?
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• Asymmetry and Minimality of Quark Mass Matrices
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• General Neutrino Mass Matrix Patterns and Its Underlying Family Symmetries
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