ALPHA-DEPENDENCE OF LAMBDA-LAMBDA BOND-ENERGIES IN DOUBLE-LAMBDA HYPERNUCLEI

The A-dependence of the bond energy Delta B-Lambda Lambda of the Lambd a Lambda hypernuclear ground states is calculated in a three-body Lamb da + Lambda + (A)Z model and in the Skyrme-Hartree-Fock approach. Vari ous Lambda Lambda and Lambda-nucleus or Lambda N potentials are used a nd the sensitivity of Delta B-Lambda Lambda to the interactions is dis cussed. It is shown that in medium and heavy Lambda Lambda hypernuclei , Delta B-Lambda Lambda is a linear function of r(Lambda)(-3), where r (Lambda) is rms radius of the hyperon orbital. It looks unlikely that it will be possible to extract Lambda Lambda interaction from the doub le-Lambda hypernuclear energies only, the additional information about the Lambda-core interaction, in particular, on r(Lambda) is needed.