arXiv:nucl-th/0703072·v1·Nuclear Theory
Isospin symmetry breaking in an algebraic pairing Sp(4) model
K. D. Sviratcheva🇺🇸 · A. I. Georgieva🇺🇸 · J. P. Draayer🇺🇸
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.
Comments: 8 pages, 2 figures