2004/08/03 by M. Hirai, Hirai, M., S. Kumano +3
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Nuclear Experiment (nucl-ex) #Nuclear Theory (nucl-th) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ex #hep-ph #nucl-ex #nucl-th
paper · pdf · doi:10.48550/arxiv.hep-ph/0408024
4 pages, LaTeX, 4 eps files, dis04.cls, to be published in the proceedings of the 12th International Workshop on Deep Inelastic Scattering (DIS04), Strbske-Pleso, Slovakia, April 14-18, 2004. Polarized PDF library is available at http://spin.riken.bnl.gov/aac/
arxiv created 2004/08/03 · openalex publication_date 2004/08/03 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We report recent studies of the Asymmetry Analysis Collaboration (AAC) on polarized parton distribution functions (PDFs). Using the data on the spin symmetry A1 in deep inelastic lepton scattering, we investigate optimum polarized PDFs. Their uncertainties are estimated by the Hessian method. The uncertainties are large for the polarized antiquark and gluon distributions. We discuss the role of accurate SLAC-E155 proton data on the determination of the PDFs. The obtained distributions are compared with other parametrization results.