Color Magnetic Corrections to Quark Model Valence Distributions

Details Color Magnetic Corrections to Quark Model Valence Distributions Color Magnetic Corrections to Quark Model Valence Distributions

1993-04-20

arxiv.org/abs/nucl-th/9304016v1

Phys.Rev.C48:1379-1387,1993

Physics

Nuclear Physics

Nuclear Theory

25 Pages, LA-UR-93-1320

Scientific paper

10.1103/PhysRevC.48.1379

We calculate order $\alpha_s$ 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 $\alpha_s$ sufficient to produce the $N-\Delta$ mass splitting, we find up and down quark distributions in reasonable agreement with experiment.

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