RADIATIVE FERMION MASS IN AN ASYMMETRIC LEFT-RIGHT MODEL

The radiative mechanism of generating fermion mass is presented in an asymmetric left-right model. The wide range of Yukawa couplings can be reduced to the order of 10(-2) to unity and the lower bounds on the masses of heavy singlet fermions are obtained if the breaking energy scale in the right-hand sector is 1 TeV or greater. Three light and three heavy Majorana neutrinos appear in this model. The formula derived in this paper using the perturbation method can be further used to estimate the magntiude of the flavor-changing neutral couplings in this model.