Exact mass-dependent two-loop (alpha)over-bar(s)(Q(2)) in the background MOM renormalization scheme

Authors
Jegerlehner, F Tarasov, OV
Citation
F. Jegerlehner et Ov. Tarasov, Exact mass-dependent two-loop (alpha)over-bar(s)(Q(2)) in the background MOM renormalization scheme, NUCL PHYS B, 549(1-2), 1999, pp. 481-498
Citations number
46
Categorie Soggetti
Physics
Journal title
NUCLEAR PHYSICS B
ISSN journal
05503213 → ACNP
Volume
549
Issue
1-2
Year of publication
1999
Pages
481 - 498
Database
ISI
SICI code
0550-3213(19990531)549:1-2<481:EMT(IT>2.0.ZU;2-W
Abstract
A two-loop calculation of the renormalization group beta-function in a mome ntum subtraction scheme with massive quarks is presented using the backgrou nd held formalism. The results have been obtained by using a set of new gen eralized recurrence relations proposed recently by one of the authors (O.V. T.). The behavior of the mass-dependent effective coupling constant is inve stigated in detail. Compact analytic results are presented. (C) 1999 Elsevi er Science B.V. All rights reserved.