SELF-ENERGY OF MASSIVE LATTICE FERMIONS - ART. NO. 034505

We address the perturbative renormalization of massive lattice fermion s. We derive expressions-valid to all orders in perturbation theory an d for all values of the bare fermion mass-for the rest mass, the kinet ic mass, and the wave-function renormalization factor. We obtain the f ermion's self energy at the one-loop level with a mass-dependent, O(a) improved action. Numerical results for two interesting special cases, the Wilson and Sheikholeslami-Wohlert actions, are given. The mass de pendence of these results smoothly connects the massless and infinite- mass limits, as expected. Combined with Monte Carlo calculations our r esults can be employed to determine the quark masses in common renorma lization schemes. [S0556-2821(98)04515-9].