An exactly solvable sp(4) algebraic approach extends beyond the traditional isospin-conserving nuclear interaction to bring forward effects of isospin symmetry breaking and isospin mixing resulting from a two-body nuclear interaction that includes proton-neutron (pn) and like-particle isovector pairing correlations plus significant isoscalar pn interactions. The model yields an estimate for the extent to which isobaric analog 0+ states in light and medium-mass nuclei may mix with one another and reveals possible, but still extremely weak, nonanalog β-decay transitions. © 2005 The American Physical Society.
Publication Source (Journal or Book title)
Physical Review C - Nuclear Physics
Sviratcheva, K., Georgieva, A., & Draayer, J. (2005). Isospin symmetry breaking in an algebraic pairing Sp(4) model. Physical Review C - Nuclear Physics, 72 (5) https://doi.org/10.1103/PhysRevC.72.054302