Journal
PHYSICAL REVIEW D
Volume 93, Issue 7, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.93.074005
Keywords
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Funding
- US Department of Energy (DOE) [DE-AC05-06OR23177]
- DOE [DE-SC008791, DE-FG0296ER40960, DE-SC0006758]
- GAUSTEQ (Germany and U.S. Nuclear Theory Exchange Program for QCD Studies of Hadrons and Nuclei)
- U.S. Department of Energy (DOE) [DE-SC0006758] Funding Source: U.S. Department of Energy (DOE)
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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.
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