Fermion Masses and Mixing Angles from SU(3) Family Symmetry

Details Fermion Masses and Mixing Angles from SU(3) Family Symmetry Fermion Masses and Mixing Angles from SU(3) Family Symmetry

2001-08-13

arxiv.org/abs/hep-ph/0108112v3

Phys.Lett. B520 (2001) 243-253

Physics

High Energy Physics

High Energy Physics - Phenomenology

Minor changes. Version to appear in Phys.Lett B. 16 pages, latex

Scientific paper

10.1016/S0370-2693(01)01139-X

We propose a model based on SU(3) family symmetry which leads to a successful description of quark and lepton masses and mixing angles including approximate bi-maximal mixing in the neutrino sector suitable for the LOW or quasi-vacuum solar solutions, with the atmospheric angle predicted to be accurately maximal due to the SU(3) symmetry. The model predicts a CHOOZ angle $\theta_{13}\sim |V_{ub}|.$ The SU(3) symmetry can also ensure the near degeneracy of squarks and sleptons needed to avoid large flavour changing neutral currents.

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