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Phys. Rev. D 66, 125012 (2002) [9 pages]

Avoiding the Landau pole in perturbative QCD

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K. Van Acoleyen* and H. Verschelde
Department of Mathematical Physics and Astronomy, University of Ghent, Krijgslaan 281 (S9), 9000 Ghent, Belgium

Received 21 March 2002; published 27 December 2002

We propose an alternative perturbative expansion for QCD. All scheme and scale dependence is reduced to one free parameter. Fixing this parameter with a fastest apparent convergence criterion gives sensible results in the whole energy region. We apply the expansion to the calculation of the zero flavor triple gluon vertex, the quark gluon vertex, the gluon propagator, and the ghost propagator. A qualitative agreement with the corresponding lattice results is found.

© 2002 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevD.66.125012
DOI:
10.1103/PhysRevD.66.125012
PACS:
11.15.Bt, 11.10.Hi

*Email address: karel.vanacoleyen@rug.ac.be