%0 Journal Article
%T Evolution of twist-3 multi-parton correlation functions relevant to single transverse-spin asymmetry
%A Kang
%A Zhong-Bo
%A Qiu
%A Jian-Wei
%J High Energy Physics - Phenomenology
%D 2008
%I 
%R 10.1103/PhysRevD.79.016003
%X We constructed two sets of twist-3 correlation functions that are responsible for generating the novel single transverse-spin asymmetry in the QCD collinear factorization approach. We derive evolution equations for these universal three-parton correlation functions. We calculate evolution kernels relevant to the gluonic pole contributions to the asymmetry at the order of $\alpha_s$. We find that all evolution kernels are infrared safe as they should be and have a lot in common to the DGLAP evolution kernels of unpolarized parton distributions. By solving the evolution equations, we explicitly demonstrate the factorization scale dependence of these twist-3 correlation functions.
%U http://arxiv.org/abs/0811.3101