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PreprintarXiv licencearXiv

Dispersive-optical-model analysis of the asymmetry dependence of neutron skins

  • R. A. Ramon
  • M. C. Atkinson
  • W. H. Dickhoff
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Abstract

New dispersive optical model analyses of 54Fe and 90Zr together with updated results for 40Ca, 48Ca, and the earlier result for 208Pb shed light on the behavior of neutron skins in nuclei. Starting with a negative skin for 40Ca, a trend increasing somewhat stronger than linear emerges when the neutron skin of these nuclei is considered as a function of asymmetry, (N−Z)/A, and linked to the Green's function Monte Carlo results for asymmetric He nuclei. This general trend is consistent with the expectation that nuclei near the neutron drip line are expected to have very large neutron skins. The present analysis therefore motivates the question of which nuclei provide the most relevant link to neutron star physics.

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Cite

BibTeXRIS
BibTeX
@misc{ramon2026dispersiveopticalmodel,
  title = {{Dispersive-optical-model analysis of the asymmetry dependence of neutron skins}},
  author = {R. A. Ramon and M. C. Atkinson and W. H. Dickhoff},
  howpublished = {arXiv},
  year = {2026},
  month = sep,
  doi = {10.48550/arxiv.2607.01599},
  eprint = {2607.01599},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2607.01599},
}
RIS
TY  - UNPB
TI  - Dispersive-optical-model analysis of the asymmetry dependence of neutron skins
AU  - R. A. Ramon
AU  - M. C. Atkinson
AU  - W. H. Dickhoff
PY  - 2026
DA  - 2026/09/22
PB  - arXiv
DO  - 10.48550/arxiv.2607.01599
UR  - https://arxiv.org/abs/2607.01599
AB  - New dispersive optical model analyses of ^54Fe and ^90Zr together with updated results for ^40Ca, ^48Ca, and the earlier result for ^208Pb shed light on the behavior of neutron skins in nuclei. Starting with a negative skin for ^40Ca, a trend increasing somewhat stronger than linear emerges when the neutron skin of these nuclei is considered as a function of asymmetry, (N−Z)/A, and linked to the Green's function Monte Carlo results for asymmetric He nuclei. This general trend is consistent with the expectation that nuclei near the neutron drip line are expected to have very large neutron skins. The present analysis therefore motivates the question of which nuclei provide the most relevant link to neutron star physics.
ER  -