Progress in automated perturbation theory for heavy quark physics

Preprint

15 September 2003

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.hep-lat/0309086

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.

Keywords

ERRORS IN THESE CALCULATIONS
PERTURBATIVE TECHNIQUES
AUTOMATED PERTURBATION
PERTURBATION THEORY
SYSTEMATIC ERRORS
QUARK PHYSICS
HEAVY QUARK
LATTICE
THEORY

All Related Versions

Version 1, 2003-09-15, ArXiv
Published version: Nuclear Physics B - Proceedings Supplements, 129-130, 355.

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