Nuclear effects on the spin-dependent structure functions

We address the question how the spin-dependent nucleon structure function g_1(x,Q^2) gets modified when the nucleon is bound inside a nucleus. The model known to describe the unpolarized nuclear effects at moderate Bjorken x (x \ge 0.1) is extended to the polarized case. The results for the neutron in ^3He and the proton in ^3H, ^7Li and ^{19}F are presented, showing significant changes in the parton spin distributions and their moments. Scattering processes off polarized ^7Li are suggested which could justify these theoretical calculations and shed more light on both nuclear spin structure and short distance QCD