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Color Magnetic Corrections to Quark Model Valence Distributions

C. J. Benesh·T. Goldman·G. J. Stephenson Jr
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Abstract

We calculate order $α_s$ color magnetic corrections to the valence quark distributions of the proton using the Los Alamos Model Potential wavefunctions. The spin-spin interaction breaks the model SU(4) symmetry, providing a natural mechanism for the difference between the up and down distributions. For a value of $α_s$ sufficient to produce the $N-Δ$ mass splitting, we find up and down quark distributions in reasonable agreement with experiment.

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C. J. Benesh, T. Goldman, G. J. Stephenson Jr. 1993-04-20. Color Magnetic Corrections to Quark Model Valence Distributions. https://doi.org/10.1103/physrevc.48.1379

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