Study on the nuclear Coulomb low-energy scattering parameters on the basis of P-matrix approach

The P-matrix approach application to the description of the nuclear-Coulomb scattering parameters of two charged strongly interacting particles is considered. The nuclear-Coulomb scattering length and effective-range exact expressions in terms of the P-matrix parameters, which establish in an explicit form their connection with the P-matrix, are obtained for the first time. 29 refs