New flavor U(1)F symmetry for SUSY SU(5)

Within supersymmetric SU(5) Grand Unified Theory, we present several new scenarios with anomaly free flavor symmetry U(1)F. Within each scenario, a variety of cases offer many possibilities for phenomenologically interesting model building. We present three concrete and economical models with anomaly free U(1)F leading to natural understanding of observed hierarchies between charged fermion masses and CKM mixing angles.