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Title: Parton degrees of freedom in PDFs from the hadronic tensor and large momentum effective theory

Abstract

We point out a problem of the phenomenological definition of the valence partons as the difference between the partons and antipartons in the context of the NNLO evolution equations. After demonstrating that the classification of the parton degrees of freedom (PDF) of the parton distribution functions (PDFs) are the same in the QCD path-integral formulations of the hadronic tensor and the quasi-PDF with LaMET, we resolve the problem by showing that the proper definition of the valence should be in terms of those in the connected insertions only. We also prove that the strange partons appear as the disconnected sea in the nucleon.

Authors:
ORCiD logo
Publication Date:
Research Org.:
Univ. of Kentucky, Lexington, KY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP); National Science Foundation (NSF)
OSTI Identifier:
1670502
Alternate Identifier(s):
OSTI ID: 1701738; OSTI ID: 1755347
Report Number(s):
DOE-UKY-13065-2007.15075
Journal ID: ISSN 2470-0010; PRVDAQ; 074502
Grant/Contract Number:  
SC0013065; AC05-06OR23177; AC05-00OR22725; ACI-1053575
Resource Type:
Published Article
Journal Name:
Physical Review D
Additional Journal Information:
Journal Name: Physical Review D Journal Volume: 102 Journal Issue: 7; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; Gauge theories; Lattice QCD; lattice field theory; path integrals; quantum chromodynamics

Citation Formats

Liu, Keh-Fei. Parton degrees of freedom in PDFs from the hadronic tensor and large momentum effective theory. United States: N. p., 2020. Web. https://doi.org/10.1103/PhysRevD.102.074502.
Liu, Keh-Fei. Parton degrees of freedom in PDFs from the hadronic tensor and large momentum effective theory. United States. https://doi.org/10.1103/PhysRevD.102.074502
Liu, Keh-Fei. Tue . "Parton degrees of freedom in PDFs from the hadronic tensor and large momentum effective theory". United States. https://doi.org/10.1103/PhysRevD.102.074502.
@article{osti_1670502,
title = {Parton degrees of freedom in PDFs from the hadronic tensor and large momentum effective theory},
author = {Liu, Keh-Fei},
abstractNote = {We point out a problem of the phenomenological definition of the valence partons as the difference between the partons and antipartons in the context of the NNLO evolution equations. After demonstrating that the classification of the parton degrees of freedom (PDF) of the parton distribution functions (PDFs) are the same in the QCD path-integral formulations of the hadronic tensor and the quasi-PDF with LaMET, we resolve the problem by showing that the proper definition of the valence should be in terms of those in the connected insertions only. We also prove that the strange partons appear as the disconnected sea in the nucleon.},
doi = {10.1103/PhysRevD.102.074502},
journal = {Physical Review D},
number = 7,
volume = 102,
place = {United States},
year = {2020},
month = {10}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1103/PhysRevD.102.074502

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