Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1997-01-20
Theor.Math.Phys. 96 (1993) 837-844; Teor.Mat.Fiz. 96 (1993) 96-108
Physics
High Energy Physics
High Energy Physics - Phenomenology
12 pages, LaTeX
Scientific paper
A covariant method is proposed for calculating the amplitudes of processes involving polarized spin 1/2 particles. It is suitable for calculating the interference terms in the cross sections of such processes. As an illustration, expressions are given for the amplitudes of electron-electron scattering in the lowest order of perturbation theory and expressions for the electron current in the case of emission of two bremsstrahlung photons in the ultrarelativistic limit.
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