New model for fermion masses in supersymmetric grand unified theories

Abstract
We present a simple model for fermion mass matrices and quark mixing in the context of supersymmetric grand unified theories and show its agreement with experiment. Our model realizes the GUT mass relations md=3me, ms=mμ3, mb=mτ in a new way and is easily consistent with values of mt suggested by MSSM fits to CERN LEP data.