Radiative effects in deep inelastic scattering of polarized leptons by polarized light nuclei

Principal contributions to QED radiative effects in deep inelastic scattering (DIS) of polarized leptons by polarized targets (H,D,3He) are investigated both on the Born level and taking into account radiative corrections (RC). Scattering in the case of transverse polarized targets is also considered. All quantities are presented in terms of covariant variables. Exact results are obtained for low-order corrections. Detailed numerical analysis under the conditions of forthcoming polarization experiments is carried out. Two points of view on calculation of RC to experimental data are discussed in detail. The results of a computer run in the regime of data-processing iteration procedure are presented.