Exact mass dependent two--loop $\bar{\alpha}_s(Q^2)$ in the background MOM renormalization scheme
High Energy Physics - Phenomenology
2009-10-31 v2
Abstract
A two-loop calculation of the renormalization group --function in a momentum subtraction scheme with massive quarks is presented using the background field formalism. The results have been obtained by using a set of new generalized recurrence relations proposed recently by one of the authors (O.V.T.). The behavior of the mass dependent effective coupling constant is investigated in detail. Compact analytic results are presented.
Keywords
Cite
@article{arxiv.hep-ph/9809485,
title = {Exact mass dependent two--loop $\bar{\alpha}_s(Q^2)$ in the background MOM renormalization scheme},
author = {F. Jegerlehner and O. V. Tarasov},
journal= {arXiv preprint arXiv:hep-ph/9809485},
year = {2009}
}
Comments
20 pages, 5 figures, LaTeX, uses axodraw.sty, revised version, Sec. 5 (numerical results) changed (quark masses were not set properly) and enhanced