Abstract
We construct a supersymmetric (SUSY) SU ( 5 ) model with the flavor symmetry S 4 × Z 3 × Z 4 . Three generations of adjoint matter fields are introduced to generate the neutrino masses via the combined type I and type III see-saw mechanism. The first two generations of the 10-dimensional representation in SU ( 5 ) are assigned to be a doublet of S 4 , the second family 10 is chose as the first component of the doublet, and the first family as the second component. Tri-bimaximal mixing in the neutrino sector is predicted exactly at leading order, charged lepton mixing leads to small deviation from the tri-bimaximal mixing pattern. Subleading contributions introduce corrections of order λ c 2 to all three lepton mixing angles. The model also reproduces a realistic pattern of quark and charged lepton masses and quark mixings. The phenomenological implications of the model are analyzed in detail.
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