We perform a combined next to leading order analysis of both inclusive and semi-inclusive polarized deep inelastic scattering data, assessing the impact of new data on the extraction of the sea quark and gluon spin dependent densities. In particular, we find that semi-inclusive data show a clear preference for a positive Δ ū \=u distribution, although are almost insensitive to different alternatives to Δd̄.
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Florian et al. (2000) studied this question.
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