Proton spin structure in the rest frame

Details Proton spin structure in the rest frame Proton spin structure in the rest frame

1997-04-14

arxiv.org/abs/hep-ph/9704320v2

Phys.Rev. D56 (1997) 5834-5838

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, Tex, 1 PostScript figure. In the revised version some references are added and minor corrections are done. This vers

Scientific paper

10.1103/PhysRevD.56.5834

It is shown that the quark-parton model in the standard infinite momentum approach overestimate the proton spin structure function $g_1(x)$ in comparison with the approach taking consistently into account the internal motion of quarks described by a spherical phase space in the proton rest frame. Particularly, it is shown the first moment of the spin structure function in the latter approach, assuming only the valence quarks contribution to the proton spin, does not contradict to the experimental data.

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