One loop matching coefficients for a variant overlap action--and some of its simpler relatives
arXiv:hep-lat/0210028 · doi:10.1103/PhysRevD.67.014507
Abstract
I present one-loop perturbative calculations of matching coefficients between matrix elements in continuum regulated QCD and lattice QCD with overlap fermions, with emphasis 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 non-penguin four-fermion operators) for naive, Wilson, clover, and overlap actions are shown.
17 pages, Revtex, 11 postscript figures. COLO-HEP-485
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