skip to main content

Title: Parton Momentum and Helicity Distributions in the Nucleon

We review the current status of spin-averaged and spin-dependent parton distributions functions (PDFs) of the nucleon. After presenting the formalism used to fit PDFs in modern global data analyses, we discuss constraints placed on the PDFs by specific data types. We give representative examples of unpolarized and polarized PDFs and their errors, and list open questions in global QCD fitting. Finally, we anticipate how future facilities, with fixed-target and collider experiments, may impact our knowledge of PDFs and reduce their uncertainties.
Authors:
 [1] ;  [1] ;  [2]
  1. JLAB
  2. Florida State U.
Publication Date:
OSTI Identifier:
1089734
Report Number(s):
JLAB-THY-13-1737; DOE/OR/23177-2561
DOE Contract Number:
AC05-06OR23177; FG02-13ER41942
Resource Type:
Journal Article
Resource Relation:
Journal Name: J.Phys.G; Journal Volume: 40; Journal Issue: 9
Research Org:
Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
Sponsoring Org:
USDOE Office of Science (SC)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS