A ParametrizedS-matrix model of deep-inelastic scattering

Deep-inelastic collisions are studied within a phenomenological approach based on a parametrized S matrix. The importance of a correct treatment of the Poisson sum is emphasized and the possibility of non-zero angular-momentum transfer is included. Statistical fluctuations are also considered. It is shown that the spin polarization is extremely sensitive to the treatment of the Poisson sum and that the spin alignment is independent of the scattering angle in the absence of statistical fluctuations.