Parton distributions for the octet and decuplet baryons

Abstract

We calculate the parton distributions for both polarized and unpolarized octet and decuplet baryons, using the MIT bag, dressed by mesons. We show that the hyperfine interaction responsible for the Δ-N and Σ⁰-Λ splittings leads to large deviations from SU(3) and SU(6) predictions. For the Λ we find significant polarized, non-strange parton distributions which lead to a sizable Λ polarization in polarized, semi-inclusive ep scattering. We also discuss the flavor symmetry violation arising from the meson cloud associated with the chiral structure of baryons.