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Isospin symmetry breaking in an algebraic pairing Sp(4) model

K. D. Sviratcheva·A. I. Georgieva·J. P. Draayer
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Abstract

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, non-analog beta-decay transitions.

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K. D. Sviratcheva, A. I. Georgieva, J. P. Draayer. 2007-03-22. Isospin symmetry breaking in an algebraic pairing Sp(4) model. https://doi.org/10.1103/physrevc.72.054302

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