Lawrence Berkeley National Laboratory
Quasiparton distribution functions at NNLO: Flavor nondiagonal quark contributions
- Author(s): Chen, LB
- Wang, W
- Zhu, R
- et al.
Published Web Locationhttps://doi.org/10.1103/PhysRevD.102.011503
© 2020 authors. Published by the American Physical Society. We present a next-to-next-to-leading order (NNLO) calculation of the quasiparton distribution functions (quasi-PDFs) in the large momentum effective theory (LaMET). We focus on the flavor nondiagonal 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.