Elastic scattering of neutrino (antineutrino) electron (muon) type on electron

In the present work the differential and total cross sections of the following processes: e-+νsub(e)→e-+νsub(e); e-+antiνsub(e) → e-+antiνsub(e); e-+ν(μ) → e-+νsub(μ); e-+antiνsub(μ) → e-+antiνsub(μ); are calculated in the second order in coupling constants. The calculations are completed in the frame work of two different models: (1) in the model with intermediate W-boson, (2) in the Wejnberg model. The Weinberg angle is obtained to be THETAsub(W) = 45 deg by comparison with the experimental data. An inconsistence with the Pomerantchuk theorem is obtained. (S.P.)