Low lying excited states of ${}^{24}$O investigated by self-consistent microscopic description of proton inelastic scattering

Abstract

The proton inelastic scattering of ${}^{24}$O($p,p^{\prime }$) at 62 MeV/nucleon is described by a self-consistent microscopic calculation with the continuum particle-vibration coupling (cPVC) method. The SLy5, SkM*, and SGII parameters are adopted as an effective nucleon-nucleon interaction. For all the parameters, the cPVC calculation reproduces very well the first peak at 4.65 MeV in the ${}^{24}$O excitation energy spectrum as well as its angular distribution. The role of the cPVC self-energy strongly depends on the effective interactions. The higher-lying strength around 7.3 MeV is suggested to be a superposition of the $3^{-}$ and $4^{+}$ states by the results with SLy5 and SGII, whereas the SkM* calculation indicates it is a pure $3^{-}$ state. This difference gives a rather strong interaction dependence of the angular distribution corresponding to the higher-lying strength.

Comments: 5 pages, 5 figures