Constraining tensor force terms with the charge radii difference of mirror-pair nuclei
Abstract
Charge radii differences of mirror partner nuclei provide an alternative probe to pin down the interaction components in asymmetric nuclear matter. In this work, the differences in the charge radii of almost spherical mirror-paired nuclei 54Ni-54Fe and 36Ca-36S are used to constrain the magnitude of tensor terms in the Skyrme interactions. The calculated results suggest that a linear correlation can be found between the difference of charge radii of mirror partner nuclei and the adopted strengths of the triplet-odd and triplet-even tensor components. Besides, it suggests that charge radii differences of mirror-paired nuclei are more sensitive to the adopted strengths of the triplet-odd parameter U rather than the triplet-even parameter T. Combining the quantitative constraint strengths of the triplet-even tensor part obtained from the magnetic dipole (M1) excitations, the charge-exchange Gamow-Teller (GT) states, and the spin-dipole (SD) excitations, the triplet-odd strengths are further constrained for the SLy5 as well as SGII effective interactions. This provides an alternative approach to constrain the appropriate magnitude of tensor force.
Versions
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BibTeX
@misc{ya2026constraining,
title = {{Constraining tensor force terms with the charge radii difference of mirror-pair nuclei}},
author = {Yan Ya and Na Tang and Rong An},
howpublished = {arXiv},
year = {2026},
month = aug,
doi = {10.48550/arxiv.2608.00389},
eprint = {2608.00389},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2608.00389},
}
RIS
TY - UNPB
TI - Constraining tensor force terms with the charge radii difference of mirror-pair nuclei
AU - Yan Ya
AU - Na Tang
AU - Rong An
PY - 2026
DA - 2026/08/01
PB - arXiv
DO - 10.48550/arxiv.2608.00389
UR - https://arxiv.org/abs/2608.00389
AB - Charge radii differences of mirror partner nuclei provide an alternative probe to pin down the interaction components in asymmetric nuclear matter. In this work, the differences in the charge radii of almost spherical mirror-paired nuclei ^54Ni-^54Fe and ^36Ca-^36S are used to constrain the magnitude of tensor terms in the Skyrme interactions. The calculated results suggest that a linear correlation can be found between the difference of charge radii of mirror partner nuclei and the adopted strengths of the triplet-odd and triplet-even tensor components. Besides, it suggests that charge radii differences of mirror-paired nuclei are more sensitive to the adopted strengths of the triplet-odd parameter U rather than the triplet-even parameter T. Combining the quantitative constraint strengths of the triplet-even tensor part obtained from the magnetic dipole (M1) excitations, the charge-exchange Gamow-Teller (GT) states, and the spin-dipole (SD) excitations, the triplet-odd strengths are further constrained for the SLy5 as well as SGII effective interactions. This provides an alternative approach to constrain the appropriate magnitude of tensor force.
ER -