The Status of Renormalon

Details The Status of Renormalon The Status of Renormalon

1995-10-19

arxiv.org/abs/hep-ph/9510343v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

13 pages, Latex, 7 Postscript figures

Scientific paper

It is shown that the series of renormalon--type graphs, which consist in the chain of insertions to one soft(hard) gluon(photon) line is in fact ill defined. Each new type of insertions, which appears in the higher orders of perturbation theory, generates the correction to renormalon of the order of $\sim 1$. However, this series of the corrections to the asymptotics although have no small parameter but hopefully is not the asymptotic one. The consideration based on the use of the renormalization group equation for effective charge is supported by the direct diagrammatic picture.

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