SUSY adjoint SU(5) grand unified model with S4 flavor symmetry

We construct a supersymmetric (SUSY) SU(5) model with the flavor symmetry S-4 x Z(3) x Z(4). Three generations of adjoint matter fields are introduced to generate the neutrino masses via the combined type 1 and type 111 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 lambda(2)(c) 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. (c) 2011 Elsevier B.V. All rights reserved.