Antiquark Polarization inside the Proton is Small

Abstract

Quark contributions to the proton spin as deduced from polarized DIS of leptons off a nucleon target, and the octet baryon magnetic moments, can be used to deduce the antiquark polarizations ${\Delta }_{\overline{q}}$ inside the proton. In this way, the 1992 analysis by Karl is shown to imply ${\Delta }_{\overline{q}}\simeq 0.$ Such a spin structure fits nicely into the chiral quark interpretation of the proton spin and flavor puzzles.

LaTex and RevTex, 7 pages, sub for pub in the Phys. Lett. B Corrected an equation number error, and revised the Author/Abstract field in the original E-preprint submission. Latex and Revtex. Sub to Phys. Lett. B

References in corpus (3)

• Estimates of the higher-order QCD corrections to R(s), R_τ and deep-inelasstic scattering sum rules
• Determination of ${\alpha }_s$ and the Nucleon Spin Decomposition Using Recent Polarized Structure Function Data
• Flavor and Spin Contents of the Nucleon in the Quark Model with Chiral Symmetry

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• Chiral Quark Model of Nucleon Spin-Flavor Structure with SU(3) and Axial-U(1) Breakings
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• Nucleon spin-flavor structure in SU(3) breaking chiral quark model
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• New Relations and Constraints on Quark Spin-flavor Contents in Symmetry-breaking Chiral Quark Model
• Is nucleon spin structure inconsistent with constituent quark model?
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• The Proton Spin and Flavor Structure in the Chiral Quark Model
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