Determination of Nuclear Spectroscopic Factors by Dispersion Relations

Abstract

The spectroscopic factors for $d\to \mathrm{np}$ and ${}_{}{}^4{}_{}{}^{}\mathrm{He}\to n^3$ He are studied using dispersion relations. It is found that the large distortions represented by the cuts, which have previously prevented dispersion relations from being a practical tool for nuclear physics, can be handled using the conformal mapping techniques of Cutkosky. The method could have general applicability for nuclear physics.