Abstract
The quasipotential approach is used to investigate the analytic properties of the partial-wave S matrix in the relativistic Coulomb-nuclear scattering problem of particles having charges of the same kind. A procedure for separating the Coulomb singularities of the partial-wave amplitudes is considered, and it is shown that in the complex plane of the square of the relative momentum nu of the particles the matrix tauCH(nu) of the partial-wave amplitudes renormalized in a certain manner has on the physical sheet an analytic structure analogous to that of the matrix of partial-wave amplitudes when the Coulomb interaction is switched off. In the multichannel case, a system of modified N/D equations is formulated with allowance for inelasticity and the Coulomb effects.
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