Polarized parton distributions from NLO QCD analysis of world DIS and SIDIS data

Abstract

The combined analysis of polarized DIS and SIDIS data is performed in NLO QCD. The new parametrization on polarized PDFs is constructed. The uncertainties on PDFs and their first moments are estimated applying the modified Hessian method. The especial attention is paid to the impact of novel SIDIS data on the polarized distributions of light sea and strange quarks. In particular, the important question of polarized sea symmetry is studied in comparison with the latest results on this subject.

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Cited by in corpus (5)

• Quark helicity distributions from longitudinal spin asymmetries in muon-proton and muon-deuteron scattering
• QCD analysis of polarized DIS and the SIDIS asymmetry world data and light sea-quark decomposition
• A new approach to calculate the gluon polarization
• Valence and sea contributions to the nucleon spin
• Direct connection between the different QCD orders for parton distribution and fragmentation functions