Progress in automated perturbation theory for heavy quark physics

Matthew Nobes; Howard Trottier

doi:10.1016/s0920-5632(03)02580-5

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arXiv · hep-lat/0309086

Progress in automated perturbation theory for heavy quark physics

Matthew Nobes·Howard Trottier

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Abstract

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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Matthew Nobes, Howard Trottier. 2003-09-15. Progress in automated perturbation theory for heavy quark physics. https://doi.org/10.1016/s0920-5632(03)02580-5

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