title: Systematic all-orders method to eliminate renormalization-scale and scheme ambiguities in perturbative QCD.
abstract: We introduce a generalization of the conventional renormalization schemes used in dimensional regularization, which illuminates the renormalization scheme and scale ambiguities of perturbative QCD predictions, exposes the general pattern of nonconformal {β(i)} terms, and reveals a special degeneracy of the terms in the perturbative coefficients. It allows us to systematically determine the argument of the running coupling order by order in perturbative QCD in a form which can be readily automatized. The new method satisfies all of the principles of the renormalization group and eliminates an unnecessary source of systematic error.
authors.affiliation: CP3-Origins, Danish Institute for Advanced Studies, University of Southern Denmark, DK-5230 Odense, Denmark. mojaza@slac.stanford.edu
authors.forename: Matin
authors.initials: M
authors.lastname: Mojaza
authors.forename: Stanley J
authors.initials: SJ
authors.lastname: Brodsky
authors.forename: Xing-Gang
authors.initials: XG
authors.lastname: Wu