Unified analysis of spin isospin responses of nuclei

We investigate the Gamow-Teller (GT) response functions at a momentum transfer of q=0fm-1 and the pionic response functions for quasielastic scattering (QES) at q 1.7fm-1 using the continuum random phase approximation with the π+ρ+g' model interaction. The Landau-Migdal (LM) parameters, gNN' and gNΔ', are estimated by comparing the calculations with recent experimental data. The peak of the GT resonance and the pionic response functions below the QES peak constrain gNN', whereas the quenching of the GT total strength and the enhanced pionic strength around the QES peak provide information about gNΔ'. We obtained gNN'=0.6±0.1 and gNΔ'=0.35±0.16 at q=0fm-1 and gNN'=0.7±0.1 and gNΔ'=0.3±0.1 at q 1.7fm-1. These results indicate that the q dependence of the LM parameters is weak.