Spin content of the nucleon in a valence and sea quark mixing model

Abstract

A dynamical valence and sea quark mixing model is shown to fit the baryon ground state properties as well as the spin content of the nucleon. The relativistic correction and the $q^3{\leftrightarrow} q^3q\bar{q}$ transition terms induced by the quark axial vector current $\barψ\vecγγ^5ψ$ in this model space is responsible for the quark spin reduction.

11 pages, Latex, one figure, to be published in Phys. Rev. C57