Abstract
We consider the construction of a chiral, lattice Yukawa theory. To compensate for the chiral symmetry breaking introduced by the Wilson terms, we find that one has to add three further counterterms to the naive lattice action. We discuss how counterterm coefficients are to be fixed in a numerical simulation. We also point out a possible pathology which could prevent the regularized theory to reach the desired continuum theory. Once counterterms are fixed, one can obtain a non-perturbative upper bound to the fermion mass along similar lines to those discussed a time ago by Dashen and Neuberger for the Higgs boson mass.
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