Comparison of the fits to data on polarised structure functions and spin asymmetries
Jan Bartelski, Stanislaw Tatur
Abstract
In order to obtain polarised parton densities we have made next to leading order QCD fit using experimental data on deep inelastic structure functions on nucleons. This fit is compared with the updated fit to coresponding spin asymmetries. We get very similar results for all fits also for different data samples. It seems that only polarised parton densities for non-strange quarks Δu and Δd are relatively well determined from the present deep inelastic experiments. Inegrated gluon contribution at Q2=1 GeV2 is, as in our previous fits, very small.
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