2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/185368The electron current tensor for the scattering of heavy photon on longitudinally polarized electron accompanied with additional hard electron-positron pair has been considered. The contribution of collinear and semicollinear kinematics is computed. The full analysis of both, spin-dependent and spin-independend parts of electron current tensor, is performed. The obtained result allows to calculate the corresponding contribution into the second order radiative correction to cross-sections of different processes with the next-to-leading accuracy.19p,2Fig. (Submitted to Journ.of Physics G)High Energy Physics - Phenomenologytext