I present one-loop perturbative calculations of matching coefficients between matrix elements in continuum regulated QCD and lattice QCD with overlap fermions, with emphasis on a recently proposed variant discretization of the overlap. These fermions have extended (“fat link”) gauge connections. The scale for evaluation of the running coupling constant (in the context of the Lepage-Mackenzie fixing scheme) is also given. A variety of results (for additive mass renormalization, local currents, and some nonpenguin four-fermion operators) for naive, Wilson, clover, and overlap actions are shown.

• Received 29 October 2002

DOI:https://doi.org/10.1103/PhysRevD.67.014507