Fermion Masses and Bi-large Lepton Mixing from Singular Matrices

Details Fermion Masses and Bi-large Lepton Mixing from Singular Matrices Fermion Masses and Bi-large Lepton Mixing from Singular Matrices

2004-09-16

arxiv.org/abs/hep-ph/0409195v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, to appear in the proceedings of SUSY 2004: The 12th International Conference on Supersymmetry and Unification of Fund

Scientific paper

We discuss conditions under which bi-large mixing in the lepton sector is achieved assuming that all Yukawa matrices and the right-handed neutrino mass matrix have the same singular form in the leading order. Due to obvious quark lepton symmetry, this approach can be embedded into grand unified theories. The right-handed neutrino mass scale can be identified with the GUT scale and, as a consequence of third generation Yukawa coupling unification, the mass of the lightest neutrino is given as (m_{top}^2/M_{GUT})|U_{\tau 1}|^2 in the leading order. This relation does not depend on the exact form of mass matrices.

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