Three-Loop Anomalous Dimension of the Heavy Quark Pair Production Current in Non-Relativistic QCD

Preprint

30 July 2003

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.hep-ph/0307376

Abstract

The three-loop non-mixing contributions to the anomalous dimension of the leading order quark pair production current in non-relativistic QCD are computed. It is demonstrated that the renormalization procedure can only be carried out consistently if the dynamics of both soft and the ultrasoft degrees of freedom is present for all scales below the heavy quark mass, and if the soft and ultrasoft renormalization scales are always correlated.

Keywords

PAIR PRODUCTION CURRENT
QUARK PAIR PRODUCTION
ANOMALOUS DIMENSION
SOFT AND ULTRASOFT
LOOP ANOMALOUS
HEAVY QUARK
QCD

All Related Versions

Version 1, 2003-07-30, ArXiv
Published version: Physical Review D, 69 (3), 034009.

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