  We study the Bjorken x dependence of the virtual photon spin asymmetry in
polarized deep inelastic scattering of electrons from hadrons. We use an
exactly solved relativistic potential model of the hadron, treating the
constituents as independent massless Dirac particles bound to an infinitely
massive force center. The potential is chosen to have spin symmetry and a
linear radial dependence with spherical symmetry. The effect of interactions of
the struck constituent with the remainder of the target on the longitudinal
photon asymmetry is demonstrated. In particular, the small-x suppression of the
photon asymmetry observed in polarized deep inelastic scattering from the
proton is shown to be a consequence of these interactions. The effect of
p--wave components of the Dirac wave function, long known to give an important
contribution to the spin of hadrons, is explicitly demonstrated through their
interference with the s--wave term.
