Low-Energy Equivalent-Potential Approach for Strong Interactions. II

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Abstract
In a previous paper a method was presented for constructing the long-range part of an effective potential at any given energy. In certain problems, this potential is singular at small distances, requiring a cutoff or some other parameterization. The parameters thereby introduced can be determined by requiring that the amplitude at threshold be the same as that given by the Singh-Udgaonkar sum rule.