Quark Initial State Interaction in Deep Inelastic Scattering and the Drell-Yan process
摘要
We pursue a phenomenological study of higher twist effects in high energy processes by taking into account the off-shellness (virtuality) of partons bound in the nucleon. The effect of parton off-shellness in deep inelastic ep->eX scattering and the Drell-Yan process (pp->l+ l- X) is examined. Assuming factorization and a single-parameter Breit-Wigner form for the parton spectral function, we develop a model to calculate the corresponding off-shell cross sections. Allowing for a finite parton width of the order of 100 MeV, we reproduce the data of both DIS and the triple differential Drell-Yan cross section without an additional K-factor. The results are compared to those from perturbative QCD and the intrinsic-kT approach.
引用
@article{arxiv.hep-ph/0412138,
title = {Quark Initial State Interaction in Deep Inelastic Scattering and the Drell-Yan process},
author = {O. Linnyk and S. Leupold and U. Mosel},
journal= {arXiv preprint arXiv:hep-ph/0412138},
year = {2014}
}
备注
31 page, 12 figures, accepted to Phys.Rev.D; in v2: references added, typos corrected, minor changes to the text