Effective proton-neutron interaction in mirror nuclei
Nuclear Theory
2025-03-04 v1 Nuclear Experiment
Abstract
Effective proton-neutron interactions, , in mirror nuclei are systematically analyzed using the ground-state atomic masses. A mirror symmetry of is found for bound nuclei with a standard deviation of keV. However, this mirror symmetry is apparently broken for some mirror-nuclei pairs when a proton-unbound nucleus is involved in extracting the values. Such a mirror-symmetry breaking is attributed to the Thomas-Ehrman shift of the proton-unbound nucleus and investigated by using the Gamow shell model. It is concluded that the Thomas-Ehrman shift originates mainly from reduced Coulomb energies in the proton-unbound nuclei due to the extended radial density distribution of valence protons.
Cite
@article{arxiv.2503.01398,
title = {Effective proton-neutron interaction in mirror nuclei},
author = {Y. M. Xing and Y. F. Luo and K. H. Li and Y. H. Zhang and J. G. Li and M. Wang and Yu. A. Litvinov and K. Blaum and X. L. Yan and T. Liao and M. Zhang and X. Zhou},
journal= {arXiv preprint arXiv:2503.01398},
year = {2025}
}