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arXiv · hep-ph/9907325

Space-time properties of the higher twist amplitudes

Wei Zhu·Hongwei Xiong·Jianhong Ruan
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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.

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Wei Zhu, Hongwei Xiong, Jianhong Ruan. 1999-07-13. Space-time properties of the higher twist amplitudes. https://doi.org/10.1103/physrevd.60.094006

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