Shares of sea and valence quarks in the proton spin puzzle |
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| Authors: | O Yu Shevchenko R R Akhunzyanov V Yu Lavrentyev |
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| Institution: | 1.Joint Institute for Nuclear Research,Dubna, Moscow region,Russia |
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| Abstract: | The first moments of the polarized valence parton distribution functions truncated to the wide Bjorken x region 0.004 < x < 0.7 are directly (without any fitting procedure) extracted in NLO QCD from the combined COMPASS and HERMES semi-inclusive
deep inelastic scattering data. Applying the proposed original procedure to these results, we estimate the contributions of
light sea quarks to the proton spin, which occur just zero within the errors. |
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