Jet energy loss due to multiple scattering in the nucleus

Energy loss of a jet due to multiple collisions in the nuclear target is studied in the framework of the perturbative QCD with an infrared cutoff. An iterational procedure for its calculation is developed, which allows to reliably find up to 16 successive collisions in rescattering. The calculated shift of the scaling variable reaches values of the order 0.1 at medium x and transverse momentum p in the interval 5–10 GeV/c. The shift is found to be independent of the atomic number of the target and energy.