Multiple hadron production in electron scattering off nuclear targets

We discuss semi-inclusive $\mathrm{eA}\to e^{\prime }\mathrm{hX}$ processes in which the hadron $h$ is emitted backward in the rest frame of the target nucleus. The purpose of our analysis is the comparison of two approaches based on different descriptions of nuclear structure at short interparticle distance. The first one uses nucleonic degrees of freedom and a nuclear spectral function obtained from a microscopic many-body calculation, whereas in the second one the relativistic invariant phase-space volume available to a quark in a nucleus is computed, taking into account nucleon-nucleon correlations. The calculated proton and $\pi$-meson spectra are compared to the data taken at SLAC using 14.5 GeV $e^{+}$ and $e^{-}$ scattering off CO.