Relativistic formalism of accounting nucleon final state interaction effects in e- + d → e- + n + p reaction. 1. Unpolarized particles

The effects of the nucleon final state interaction (FSI) in the e- + d → e- + n + p reaction are taken into account using the method of unitarization of the multipole amplitudes in impulse approximation. In this approach the modulus of the final multipole amplitude of the γ* + d → n + p process ( γ* is the virtual photon) is determined by the relativistic version of impulse approximation and the phase of this amplitude coincides with the corresponding NN-scattering phase. The suggested unitarization procedure of the γ* + d → n + p reaction amplitude does not violate the condition of the electromagnetic current conservation for γ* + d → n + p. Such method of accounting the FSI effects permits avoiding the restrictions of the nonrelativistic models used for the description of the e- + d → e- + n + p reaction connected with the usage of the Schroedinger equation, NN-potentials and also with the choice of the nonrelativistic operator of the nucleon and pion electromagnetic interaction. The comparison of available experimental data about d(e,e'p)n reaction under different kinematical conditions with the model predictions has been carried out