Complete twist-decomposition for non-local QCD vector operators in $x$-space

Details Complete twist-decomposition for non-local QCD vector operators in $x$-space Complete twist-decomposition for non-local QCD vector operators in $x$-space

2003-06-27

arxiv.org/abs/hep-ph/0306269v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

21 pages

Scientific paper

A general procedure is introduced allowing for the complete, infinite twist decomposition of non-local vector operators in QCD off the light-cone. The method is applied to the operators $\bar\psi(x) \gamma_\mu \psi(-x)$ and $\bar\psi(x) \sigma_{\mu\nu} x^\nu \psi(-x)$ as well as to their matrix elements thereby determining all power (resp. target mass) corrections being relevant for the related distribution amplitudes.

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