Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2001-07-18
Phys.Rev. D65 (2002) 034002
Physics
High Energy Physics
High Energy Physics - Phenomenology
16 pages, latex, 2 figures
Scientific paper
10.1103/PhysRevD.65.034002
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 $\Delta u$ and $\Delta d$ are relatively well determined from the present deep inelastic experiments. Inegrated gluon contribution at $Q^{2}=1 {\rm GeV^{2}}$ is, as in our previous fits, very small.
Bartelski Jan
Tatur Stanislaw
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