Study Of P Shell ? Hypernuclei With The Skyrme-Hartree-Fock Approach

In the present study,based on the deformed Skyrme-Hartree-Fock model,the impurity effects of the A hyperon occupying p orbitals are investigated including the hypernuclei with both even and odd numbers of nucleons are in a broad region of the mass table from light p-and sd-shell hypernuclei,medium mass ones,and also heavy nuclei up to 208?Pb.In the calculation,the Skyrme force,SkI4,is used for Nucleon-nucleon(NN)interaction,while for the nucleon-hyperon(NA)interaction,two kinds of density-dependent forces are used,which are microscopic NSC89 interaction and Skyrme-type SLL4 interaction,respectively.We analyze the properties of ? binding energy and density distributions with A hyperons occupying sA orbital,?[000]1/2+,and three p? orbitals,?[110]1/2-??[101]3/2-and ?[101]1/2-In general,compared to observed binding energies,Skyrme-type SLL4 interaction gives better predictions for p-shell region hypernuclei and heavy ones while the microscopic NSC89 interaction is suitable for description of the sd-shell hypernuclei with sA state and p? states,respectively.Through the analysis of the density distributions and the energy curves of different configurations,we find that the A hyperon occupying sA orbital,[000]1/2+,makes the density of nucleons more concentrated to the center and reduce the deformation of the nuclear core for light hypernuclei.It is also found that,the ? hyperons occupying the two p? orbitals[110]1/2-and[101]3/2-drive the shapes of nuclear cores toward the prolate side and the oblate side,respectively,which is caused by the different distributions of the A hyperons on these two orbitals.The B(E2)values extracted from the DSHF calculation also support such conclusions.However,for the heavy hypernuclei,both sA and p?hyperons make little change to the nuclear core due to the saturation of its density distribution...