Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2002-12-05
Phys.Rev. D67 (2003) 074017
Physics
High Energy Physics
High Energy Physics - Phenomenology
18 pages, latex, 6 figures, final version which will be published in Phys. Rev. D, fig. 5 is changed, misprints in Table 2 are
Scientific paper
10.1103/PhysRevD.67.074017
The higher twist corrections $h^N(x)/Q^2$ to the spin dependent proton and neutron structure functions $g_1^N(x, Q^2)$ are extracted in a model independent way from experimental data on $g_1^N$ and found to be non-negligible. It is shown that the NLO QCD polarized parton densities determined from the data on g1, including higher twist effects, are in good agreement with those found earlier from our analysis of the data on g1/F1 and A1 where higher twist effects are negligible. On the contrary, the LO QCD polarized parton densities obtained from the data on g1, including higher twist, differ significantly from our previous results.
Leader Elliot
Sidorov Aleksander V.
Stamenov Dimiter B.
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