1212.0049 (Matin Mojaza et al.)

A Systematic All-Orders Method to Eliminate Renormalization-Scale and
Scheme Ambiguities in PQCD    [PDF]

Matin Mojaza, Stanley J. Brodsky, Xing-Gang Wu

We introduce a generalization of the conventional renormalization schemes used in dimensional regularization, which illuminates the renormalization scheme and scale ambiguities of pQCD predictions, exposes the general pattern of nonconformal {\beta_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 pQCD 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.

View original: http://arxiv.org/abs/1212.0049