Speaker
nobuo sato
(jefferson lab)
Description
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.
Authors
Alberto Accardi
(Hampton University)
Jacob Ethier
(College of William and Mary)
Sebastian Kuhn
(Old Dominion University)
Wally Melnitchouk
(jefferson lab)
nobuo sato
(jefferson lab)
