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arXiv · hep-ph/9203222

Infrared Factorization, Wilson Lines and the Heavy Quark Limit

G. P. Korchemsky·A. V. Radyushkin
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Abstract

It is shown that, in QCD, the same universal function $Γ_{cusp}(\vartheta, α_\s)$ determines the infrared behaviour of the on-shell quark form factor, the velocity-dependent anomalous dimension in the heavy quark effective field theory (HQET) and the renormalization properties of the vacuum averaged Wilson lines with a cusp. It is demonstrated that a combined use of the methods developed in the relevant different branches of quantum field theory essentially facilitates the all-order study of the asymptotic and analytic properties of this function.

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G. P. Korchemsky, A. V. Radyushkin. 1992-03-27. Infrared Factorization, Wilson Lines and the Heavy Quark Limit. https://doi.org/10.1016/0370-2693(92)90405-s

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