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The problem of two distinct pairs of identical particles is considered in Faddeev-Yakubovsky formalism. A set of seven coupled integral equations is obtained which is simplified by assuming separable s-wave forms for the interaction between any two particles. An angular momentum analysis is carried out to obtain the equations satisfied by the partial wave components.[NUCLEAR STRUCTURE Faddeev-Yakubovsky formalism, four-body equations, distinct pairs of identical particles, separable two-body potentials, partial wave analysis.]
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Roy-Choudhury et al. (1977) studied this question.
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