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Bethe-Salpeter equation for the massive particles with spin 1 is considered.The scattering amplitude decomposition of the particles with spin 1 byrelativistic tensors is derived. The transformation coefficients from helicityamplitudes to invariant functions is found. The integral equations system forinvariant functions is obtained and partial decomposition of this system isperformed. Equivalent system of the integral equation for the partial helicityamplitudes is presented.Comment: 26 pages, 1 Postscript figur

physics of atomic nuclei

Reduction of the Bethe-Salpeter equation for the amplitude of the scattering of spin-1 particles to a set of integral equations for invariant functions