7-11 September 2020
Center for Nuclear Femtography (SURA) and Center for Frontiers in Nuclear Science (SBU/BNL)
US/Eastern timezone

NNLO Correction to Quark Quasi Distribution Functions

8 Sep 2020, 10:00



Dr Ruilin Zhu (Nanjing Normal University)


We present the first next-to-next-to-leading order (NNLO) calculation of quark quasi parton distribution functions (PDFs) in the large momentum effective theory. The nontrivial factorization at this order is established explicitly and the full analytic matching coefficients between the quasi distribution and the lightcone distribution are derived for the first time. We demonstrate that the NNLO numerical contributions can improve the behavior of the extracted PDFs sizably.
With the unprecedented precision study of nucleon tomography at the planned electron-ion collider, high precision Lattice QCD simulations with our NNLO results implemented will enable to test the QCD theory and revolutionize our understanding of the fundamental structure of nucleon/nucleus.

Primary authors

Dr Ruilin Zhu (Nanjing Normal University) Prof. Wei Wang (Shanghai Jiao Tong University) Dr Long-Bin Chen (Guangzhou University)

Presentation Materials