Quantum Statistical Parton Distributions and the Spin Crisis

Details Quantum Statistical Parton Distributions and the Spin Crisis Quantum Statistical Parton Distributions and the Spin Crisis

1996-04-03

arxiv.org/abs/hep-ph/9604230v2

Prog.Theor.Phys. 96 (1996) 749-770

Physics

High Energy Physics

High Energy Physics - Phenomenology

plain LaTeX, 18 pages + 14 figures, revised version with changes in the text and in some figures, to appear in Progress of The

Scientific paper

10.1143/PTP.96.749

Quantum statistical distributions for the partons provide a fair description of deep inelastic scattering data at $Q^2 = 3$ and $10 (GeV/c)^2$. The study of the polarized structure functions seems to suggest an alternative possible solution of the {\it spin crisis} based on the Pauli principle. In this scheme, in fact, the defects of the Gottfried sum rule and Ellis--Jaffe sum rule for proton, result strongly connected. This possibility finds particular evidence from the phenomenological observation that the relation $\Delta u = 2 \tilde{F} + u - d -1$ seems well satisfied by parton distributions.

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