Progress in automated perturbation theory for heavy quark physics

✍ Scribed by Matthew A. Nobes; Howard D. Trottier

• Book ID: 104354697
• Publisher: Elsevier Science
• Year: 2004
• Tongue: English
• Weight: 288 KB
• Volume: 129-130
• Category: Article
• ISSN: 0920-5632
• DOI: 10.1016/s0920-5632(03)02580-5

✦ Synopsis

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 conditionsWe 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.