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The 3-dimensional wave function for a sharply cut-off Coulomb potential isanalytically derived. The asymptotic form of the related scattering amplitudereveals a failure of the standard renormalization factor which is believed tobe generally valid for any type of screening.

physical review. c. nuclear physics/physical review. c, nuclear physics

Exact three-dimensional wave function and the on-shell t-matrix for the  sharply cut off Coulomb potential: failure of the standard renormalization  factor