Renormalons Beyond One-Loop

Abstract

Higher order renormalons beyond the chain of one-loop bubbles are discussed. A perturbation method for the infrared renormalon residue is found. The large order behavior of the current-current correlation function due to the first infrared renormalon is determined in both QED and QCD to the first three orders.

26 pages, four postscript figures, version appearing in Phys. Rev. D

References in corpus (1)

• Renormalon contributions to δρ

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