Complete twist-decomposition for non-local QCD vector operators in $x$-space
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 $\barψ(x) γ_μψ(-x)$ and $\barψ(x) σ_{μν} x^νψ(-x)$ as well as to their matrix elements thereby determining all power (resp. target mass) corrections being relevant for the related distribution amplitudes.
hep-ph↗