Microscopic Description of Isospin Mixing Pairing Correlations in the Framework of an Algebraic Sp(4) Model
Nuclear Theory
2008-11-26 v1
Abstract
We explore isospin mixing beyond that due to the Coulomb interaction in the framework of an exactly solvable microscopic sp(4) algebraic approach. Specifically, we focus on the isospin non-conserving part of the pure nuclear pairing interaction. The outcome of this study shows the significance of the pairing charge dependence and its role in mixing isospin multiplets of pairing-governed isobaric analog 0+ states in light and medium mass nuclei, especially in nuclei with equal numbers of protons and neutrons. The model reveals possible, but still extremely weak, non-analog beta-decay transitions and estimates their relative strengths within a shell closure.
Keywords
Cite
@article{arxiv.nucl-th/0703074,
title = {Microscopic Description of Isospin Mixing Pairing Correlations in the Framework of an Algebraic Sp(4) Model},
author = {K. D. Sviratcheva and A. I. Georgieva and J. P. Draayer},
journal= {arXiv preprint arXiv:nucl-th/0703074},
year = {2008}
}
Comments
11 pages, 3 figures