Document Type
Article
Department/Program
Physics
Journal Title
Physical Review D
Pub Date
2016
Volume
93
Issue
7
Abstract
We present a comprehensive new global QCD analysis of polarized inclusive deep-inelastic scattering, including the latest high-precision data on longitudinal and transverse polarization asymmetries from Jefferson Lab and elsewhere. The analysis is performed using a new iterative Monte Carlo fitting technique which generates stable fits to polarized parton distribution functions (PDFs) with statistically rigorous uncertainties. Inclusion of the Jefferson Lab data leads to a reduction in the PDF errors for the valence and sea quarks, as well as in the gluon polarization uncertainty at x > = 0.1. The study also provides the first determination of the flavor -separated twist - 3 PDFs and the d(2) moment of the nucleon within a global PDF analysis.
Recommended Citation
Sato, Nobuo; Melnitchouk, W.; Accardi, A.; and Ethier, J. J., Iterative Monte Carlo analysis of spin-dependent parton distributions (2016). Physical Review D, 93(7).
10.1103/PhysRevD.93.074005
DOI
10.1103/PhysRevD.93.074005
