Medium effects in DIS from polarized nuclear targets

Abstract

The behavior of the nucleon structure functions in lepton nuclei deep inelastic scattering, bothpolarized and unpolarized, due to nuclear structure effects is reanalyzed. The study is performedin two schemes: an x-rescaling approach, and one in which there is an increase of sea quarkcomponents in the in medium nucleon, related to the low energy N-N interaction. In view ofa recent interesting experimental proposal to study the behavior of the proton spin structurefunctions in nuclei we proceed to compare these approaches in an effort to enlighten the possiblephenomenological interest of such difficult experiment.