Possible mesonic effects on inelastic proton scattering to the 10.24 MeV 1+ state in 48Ca

Abstract Differential cross sections and analyzing powers were measured for inelastic scattering of 160 MeV protons to the 48 Ca 10.24 MeV, 1 + state. DWIA calculations with shell-model wave functions which fit inelastic electron scattering form factors predict too much cross section at small q and too little at large q for inelastic proton scattering. These results are consistent with the q -dependent modification of magnetic transitions anticipated from mesonic effects such as virtual Δ (1232)-hole excitations.