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

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arxiv 2005.13757 v2 pith:ZWQSPFFM submitted 2020-05-28 hep-ph hep-exhep-latnucl-exnucl-th

Long-Bin Chen , Wei Wang , Ruilin Zhu This is my paper · ORCID
classification hep-phhep-exhep-latnucl-exnucl-th
keywords nnlodistributionfirstflavorfunctionslametnon-diagonalparton
verification ladder T0 review T1 audit T2 compute T3 formal
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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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  1. Conformal Mapping in Matching Quark Correlation Functions to Parton Distribution Functions

    hep-ph 2024-11 conditional novelty 4.0 of 10

    Conformal mapping of the Borel-transformed matching kernel reduces the scale-variation error band for quark correlation function to PDF matching by up to 40%.

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