Contribution of charge symmetry breaking forces to energy differences in mirror nuclei

Abstract

Contributions to energy differences in mirror nuclei and to the scattering length differences a pp − a nn and a nn − a np are evaluated from class III and class IV type charge symmetry breaking (CSB) potentials. We consider ϱ 0-ω mixing π 0-ν mixing, one- and two-pion exchange contributions. Potentials which are consistent with these scattering length differences and with recent CSB p-n elastic scattering data are found to contribute about 150–250 keV to the energy differences in mirror nuclei.