Masses, Magnetic Moments, and Semileptonic Decays of Spin 1/2 Baryons   with Sea Contribution
  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. 
V. Gupta (1), P. Ritto (1), and G. Sanchez-Colon (1,2) ((1)   CINVESTAV-Merida, (2) UC-Riverside)