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arXiv · 2005.13757

Quasi parton distribution functions at NNLO: flavor non-diagonal quark contributions

Long-Bin Chen·Wei Wang·Ruilin Zhu
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Abstract

We present a next-to-next-to-leading order (NNLO) calculation of the quasi parton distribution functions (Quasi-PDFs) in the large momentum effective theory (LaMET). We focus on the flavor non-diagonal quark-quark channel and demonstrate the LaMET factorization at the NNLO accuracy in the modified minimal subtraction scheme. The matching coefficient between the quasi-PDF and the light-cone PDF is derived. This provides a first step towards a complete NNLO analysis of quasi-PDFs and to better understand the nucleon structures from the first principle of QCD.

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Long-Bin Chen, Wei Wang, Ruilin Zhu. 2020-05-28. Quasi parton distribution functions at NNLO: flavor non-diagonal quark contributions. https://doi.org/10.1103/physrevd.102.011503

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