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Recently in arXiv:hep-ph/0510321 has been proposed a GUT model for fermionmasses and mixings with spontaneously broken S3 discrete flavor symmetry, whereS_3 is the permutation group of three objects. The S3 breaking pattern in thequark sector is not studied and need further investigation. Since in such amodel the number of free parameters is greater than the number of experimentalobservables, an analytical fit of all the parameters is impossible. To goforward with the model building and to deal with this problem we have used astatistical analysis. We have found that S3 is totally broken and the up-typequarks matrix is approximatively diagonal while down-type quarks matrixis notsymmetric and it is parametrized by three couplings, gd, gLd and g3d. It hasbeen found that gLd is slightly smaller than gd=1 and it is of order one, whileg3d \sim l^3 where l is the Cabibbo angle. An analytical study of thedependence of Vcb and Vub from the couplings gLd and g3d is also presented.Comment: Version accepted at IJMPA, new montecarlo analysis, an analytical  study, change conclusion, reference adde

QUARK MASSES AND MIXINGS IN E6×S3: A MONTE CARLO APPROACH

QUARK MASSES AND MIXINGS IN E₆×S₃: A MONTE CARLO APPROACH