Deformation and hyperon halo in hypernuclei

The effects of deformation and the change of the nuclear core on the hyperon binding and halo structure in single-Λ p-shell hypernuclei are studied for the C hyperisotopes and N=6 hyperisotones in the framework of the deformed Skyrme-Hartree-Fock approach with combinations of the NN interactions SIII, SGII, SkI4 and the ΛN interactions LY1 and SLL4, respectively. Deformation causes more deeply bound states with smaller extension of the density distributions and radii. The possibility of deformed halo structures of Λ 1p states in hypernuclei up to a mass number A=15 is found.