QCD effective coupling constant and effective quark mass given in a mass-dependent renormalization

1999/04/30 by Jun-Chen Su, Lian-You Shan, Ying-Hui Cao
Physics and Astronomy · #hep-th

paper · pdf

published as Commun.Theor.Phys. 36 (2001) 665-672 · 24 pages, latex, 5 figures

arxiv created 1999/07/07 · arxiv updated 2009/11/30

Abstract

The QCD one-loop renormalization is restudied in a mass-dependent subtraction scheme in which the quark mass is not set to vanish and the renormalization point is chosen to be an arbitrary timelike momentum. The correctness of the subtraction is ensured by the Ward identities which are respected in all the processes of subtraction. By considering the mass effect, the effective coupling constant and the effective quark mass are given in improved expressions which are different from the previous results.

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