He-6(Lambda Lambda) as a Lambda Lambda interaction constraint

The Nijmegen OBE potential D is SU(3) rotated to model the strangeness -2 sector of the baryon-baryon force. Soft core repulsion is introduced to regularize the singular nature of the OBE functions. The strength of the S-1(0) t = 0 interaction is adjusted to model three scenarios: (1) a bound state, (2) a narrow virtual, or antibound, state, and (3) an unbound state in which the force is weakly attractive. Using a separable approximation to these potentials, the binding energy of He-6(Lambda Lambda) is calculated in an Lambda Lambda alpha model. The resultant binding energies suggest that the strength of the S-1(0) t = 0 Lambda Lambda and the nn interactions should be similar, if the coupling between the Lambda Lambda and Xi N channels is taken into consideration, (C) 1997 Published by Elsevier Science B.V.