Unified picture of the particle and sparticle masses in SUSY GUT

Abstract

The horizontal symmetry $U(3{)}_H$ can greatly help in solving the flavor problems in the supersymmetric grand unification. We consider the $SU(5)\times U(3{)}_H$ model and show that it leads to the remarkable relations between the fermion mass matrices and the soft SUSY breaking terms. Dangerous supersymmetric contributions to the flavor-changing phenomena are naturally suppressed. The possible extensions to the $SO(10)\times U(3{)}_H$ model are also outlined.

Comments: Latex, 5 pages - some more discussions added