The isospin mixing of the lowest two 1+ states in 12C is here considered. A nuclear charge symmetry breaking interaction (CSB) which was previously fitted to help explain the Nolen-Schiffer anomaly, goes in the right direction for this problem, but is not as important as in the N-S problem. An important effect is the mixing due to the one body Coulomb field. This is shown to be approximately proportional to (〈r2〉p 1 2 - 〈r2〉p 3 2, a quantity which is very sensitive to the details of the one body nuclear potential.
All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics