Masses, Magnetic Moments, and Semileptonic Decays of Spin 1/2 Baryons with Sea Contribution

Details Masses, Magnetic Moments, and Semileptonic Decays of Spin 1/2 Baryons with Sea Contribution Masses, Magnetic Moments, and Semileptonic Decays of Spin 1/2 Baryons with Sea Contribution

1998-03-23

arxiv.org/abs/hep-ph/9803429v1

Mod.Phys.Lett. A13 (1998) 2887-2902

Physics

High Energy Physics

High Energy Physics - Phenomenology

Submitted to Int. J. of Mod. Phys. A (1998)

Scientific paper

10.1142/S0217732398003065

The spin 1/2 baryons are pictured as a composite system made out of a "core" of three valence quarks (as in the simple quark model) surrounded by a "sea" (of gluon and $q\bar{q}$ pairs) which is specified by its total quantum numbers. We assume the sea is a SU(3) flavor octet with spin 0 or 1 but no color. This model, considered earlier, is used to obtain simultaneous fits for masses, magnetic moments and $G_A/G_V$ for semileptonic decays. These fits give predictions for nucleon spin distributions in reasonable agreement with experiment.

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