Article révisé par les pairs
| Résumé : | The spherical Skyrme Hartree-Fock formalism has been used to derive an effective A -nucléon interaction of the Skyrme type. This interaction is required to fit the ground-state binding energies of 5ΛHe, 13Λ C and 16ΛO as well as the energy difference between the 16ΛO ground state and its excited state at BΛ = 2.5 MeV where the Λ-particle is assumed to be excited from the s- to the p-shell. The three-body ΛNN interaction is found to be correlated to this shell excitation energy. Having assumed for simplicity the Λ -nucléon spin-orbit force to be zero, a convenient parametrization is obtained, which provides also good results for other hypernuclear data. However, it is not possible to retain any analogy between the ΛN and the NN effective interactions. © 1981. |
