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Title Lattice QCD Calculations of Parton Physics
Abstract In this document, we summarize the status and challenges of calculating parton physics in lattice QCD for the US Particle Physics Community Planning Exercise (a.k.a. 'SSnowmass'). While PDF- moments calculations have been very successful and been continuously improved, new methods have been developed to calculate distributions directly in x-space. Many recent lattice studies have been focused on calculating isovector PDFs of the pion and nucleon, learning to control systematics asso- ciated with excited-state contamination, renormalization and continuum extrapolations, pion-mass and finite-volume effects, etc. Although in some cases, the lattice results are already competitive with experimental data, to reach the level of precision in a wide range of x for unpolarized nucleon PDFs impactful for future collider physics remains a challenge, and may require exascale supercom- puting power. The new theoretical methods open the door for calculating other partonic observables which
Author(s) Martha Constantinou, Luigi Del Debbio, Xiangdong Ji, Huey-Wen Lin, Keh-Fei Liu, Christopher Monahan, Konstantinos Orginos, Peter Petreczky, Jianwei Qiu, David Richards, Nobuo Sato, Phiala Shanahan, C.-P. Yuan, Jian-Hui Zhang, Y. Zhao
Publication Date To Appear in 2022
Document Type Journal Article
Primary Institution Thomas Jefferson National Accelerator Facility, Newport News
Affiliation Theory & Comp Physics / THEORY CENTER / THEORY CENTER
Funding Source Nuclear Physics (NP)
Proprietary? No
This publication conveys Literature Review and Summary
Document Numbers
JLAB Number: JLAB-THY-22-3564 OSTI Number:
LANL Number: arXiv:2202.07193 Other Number: DOE/OR/23177-5427, MIT-CTP/5408, MSUHEP-22-004
Associated with an experiment No
Associated with EIC No
Supported by Jefferson Lab LDRD Funding No
Journal Article
Journal Name arXiv
Refereed No
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