arXiv:hep-ph/9907325·v1·High Energy Physics — Phenomenology
Space-time properties of the higher twist amplitudes
Wei Zhu🇨🇳 · Hongwei Xiong🇨🇳 · Jianhong Ruan🇨🇳
Abstract
A consistent and intuitive description of the twist-4 corrections to the hadron structure functions is presented in a QCD-improved parton model using time-ordered perturbative theory, where the collinear singularities are naturally eliminated. We identify the special propagators with the backward propagators of partons in time order.
Comments: 18 Pages, Latex, 8 Ps figures, To appear in Phys. Rev. D