Spin of the proton and orbital motion of quarks

Details Spin of the proton and orbital motion of quarks Spin of the proton and orbital motion of quarks

2005-11-11

arxiv.org/abs/hep-ph/0511142v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

6 pages, 1 figure, Presented at the Workshop Nucleon05, Frascati 12-14Oct. 2005

Scientific paper

Effect of the quark intrinsic motion on the proton spin structure functions is demonstrated. It is shown, that the covariant version of the quark-parton model taking into account the orbital motion gives the consistent picture of the proton spin structure, which is based on the valence quarks. This picture is supported by the recent data, which indicate, that the spin contributions from the sea quarks and gluons are compatible with zero.

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