Correlator of heavy-quark currents at small q^2 in the large-beta_0 limit

Preprint

3 December 2004

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.hep-ph/0412040

Abstract

The correlator of vector heavy-quark currents at small q^2 is considered in the large-beta_0 limit. The leading IR renormalon ambiguity of the sum of the perturbative series is canceled by the UV renormalon ambiguity of the gluon condensate. Asymptotic behaviour of the perturbative series is obtained in a model-independent way, up to a single unknown normalization factor. Gluon-virtuality distribution functions for the perturbative correction are calculated.

Keywords

HEAVY QUARK CURRENTS
ASYMPTOTIC BEHAVIOUR
CURRENTS AT SMALL
QUARK CURRENTS
BETA_0 LIMIT
LARGE BETA_0

All Related Versions

Version 1, 2004-12-03, ArXiv
Published version: The European Physical Journal C, 40 (2), 157.

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