Progress in automated perturbation theory for heavy quark physics

Details Progress in automated perturbation theory for heavy quark physics Progress in automated perturbation theory for heavy quark physics

2003-09-15

arxiv.org/abs/hep-lat/0309086v1

Physics

High Energy Physics

High Energy Physics - Lattice

3 pages, 2 figures, Lattice 2003 (Heavy Quark)

Scientific paper

10.1016/S0920-5632(03)02580-5

We review our perturbative techniques for improved heavy quark actions. A new procedure for computing improvement coefficients is suggested, where the continuum limit of a lattice-regularized theory provides the matching conditions.We also use a gauge-invariant infrared regulator that is well suited to higher-order calculations in lattice gauge theory. We report on preliminary tests of our method, as well as a possible way to reduce systematic errors in these calculations.

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