arXiv:hep-ph/9809270·v1·High Energy Physics — Phenomenology
Complete renormalization group improvement of QCD perturbation theory
C.J. Maxwell (Centre for Particle Theory, University of Durham, Durham, England)🇬🇧
Abstract
We suggest that at any given order of Feynman diagram calculation all renormalization group (RG)-predictable terms should be resummed to all-orders. This ``complete'' RG-improvement (CORGI) serves to separate the perturbation series into infinite subsets of terms which when summed are renormalization scheme (RS)-invariant. Crucially all ultraviolet logarithms involving the dimensionful parameter, Q, on which the observable depends are resummed, thereby building the correct Q-dependence. There are close connections with the effective charge approach of Grunberg.
Comments: 10 pages, no figures