Three-Loop Anomalous Dimension of the Heavy Quark Pair Production Current in Non-Relativistic QCD
High Energy Physics - Phenomenology
2009-11-10 v1
Abstract
The three-loop non-mixing contributions to the anomalous dimension of the leading order quark pair production current in non-relativistic QCD are computed. It is demonstrated that the renormalization procedure can only be carried out consistently if the dynamics of both soft and the ultrasoft degrees of freedom is present for all scales below the heavy quark mass, and if the soft and ultrasoft renormalization scales are always correlated.
Keywords
Cite
@article{arxiv.hep-ph/0307376,
title = {Three-Loop Anomalous Dimension of the Heavy Quark Pair Production Current in Non-Relativistic QCD},
author = {A. H. Hoang},
journal= {arXiv preprint arXiv:hep-ph/0307376},
year = {2009}
}
Comments
19 pages, revtex, 5 postscript figures included