Document Type

Article

Publication Date

2016

DOI

10.1103/PhysRevD.93.074005

Publication Title

Physical Review D

Volume

93

Issue

7

Pages

074005 (1-27)

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 d2 moment of the nucleon within a global PDF analysis.

Comments

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© American Physical Society

Original Publication Citation

Jefferson Lab Angular Momentum, C., Sato, N., Melnitchouk, W., Kuhn, S. E., Ethier, J. J., & Accardi, A. (2016). Iterative monte carlo analysis of spin-dependent parton distributions. Physical Review D, 93(7), 074005. doi:10.1103/PhysRevD.93.074005

ORCID

0000-0003-2243-6836 (Kuhn, Sebastian)

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