QCD analysis of the semi-inclusive COMPASS and HERMES data
Journal Article
·
· Physics of Particles and Nuclei
- Joint Institute for Nuclear Research, Dubna (Russian Federation)
The first moments of 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 the NLO QCD from combined semi-inclusive DIS data of COMPASS and HERMES collaborations. Two scenarios for fragmentation functions are considered. Applying the proposed original procedure to these results we estimate the contributions of sea u and d quarks to the proton spin, which turn out to be simply zero within the errors.
- OSTI ID:
- 22977329
- Journal Information:
- Physics of Particles and Nuclei, Journal Name: Physics of Particles and Nuclei Journal Issue: 1 Vol. 45; ISSN 1063-7796
- Country of Publication:
- United States
- Language:
- English
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