HYPERTRITON - LAMBDA]-]SIGMA CONVERSION AND TENSOR FORCES

The separable potential equations that describe the hypertriton when N-N coupling and noncentral NN and YN forces are included, are formulated. Numerical solution of the equations for various potential models shows that - conversion in the YN interaction plays a significant role, even in the lightly bound H3. When the N channel is formally eliminated, the dispersive energy dependence of the resulting N effective interaction is repulsive, whereas the resulting NN three-body force is attractive. The contribution of the N tensor force is shown to depend upon the inclusion of the NN tensor force and the relative sign of the 3S1-3D1 NN and N tensor coupling. Also, a model which supports a N bound state in the continuum appears to severely overbind the H3 system, indicating that such a phenomenon is not present in the K-dN reaction. © 1990 The American Physical Society.