Dispersive optical model description of the CaFe experiment
Abstract
High-momentum ratios measured in the CaFe experiment using high-energy electron scattering off the CaFe nuclei (i.e. 40Ca, 48Ca, 54Fe) have revealed a surprising correlation between the nuclear shell structure and the high-momentum components generated by short-range and tensor correlations (SRC). The non-local dispersive optical model (DOM) successfully describes the experimentally measured high-momentum ratios while simultaneously describing the nuclear bound-state properties and scattering observables for these CaFe nuclei. The experimentally measured average high-momentum ratio of 48Ca/40Ca and 54Fe/48Ca are 1.10 ± 0.02 and 1.49 ± 0.03, respectively. The corresponding DOM results are 1.05 ± 0.05 and 1.52 ± 0.08, which is the first successful description of these experimental results. The present DOM analysis of CaFe nuclei relied on an extended version of the DOM incorporating a shrinkable geometry to provide a more localized and stronger volume absorption at higher missing energies to correctly represent the SRC physics. The success of the DOM can be attributed to its simultaneous treatment of structure and reaction data, the latter requiring a depletion of the mean-field accompanied by the proper admixture of high-momentum components in the respective ground states.
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BibTeX
@misc{ramon2026dispersive,
title = {{Dispersive optical model description of the CaFe experiment}},
author = {R. A. Ramon and M. C. Atkinson and W. H. Dickhoff},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2610.00776},
eprint = {2610.00776},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2610.00776},
}
RIS
TY - UNPB
TI - Dispersive optical model description of the CaFe experiment
AU - R. A. Ramon
AU - M. C. Atkinson
AU - W. H. Dickhoff
PY - 2026
DA - 2026/10/01
PB - arXiv
DO - 10.48550/arxiv.2610.00776
UR - https://arxiv.org/abs/2610.00776
AB - High-momentum ratios measured in the CaFe experiment using high-energy electron scattering off the CaFe nuclei (i.e. ^40Ca, ^48Ca, ^54Fe) have revealed a surprising correlation between the nuclear shell structure and the high-momentum components generated by short-range and tensor correlations (SRC). The non-local dispersive optical model (DOM) successfully describes the experimentally measured high-momentum ratios while simultaneously describing the nuclear bound-state properties and scattering observables for these CaFe nuclei. The experimentally measured average high-momentum ratio of ^48Ca/^40Ca and ^54Fe/^48Ca are 1.10 ± 0.02 and 1.49 ± 0.03, respectively. The corresponding DOM results are 1.05 ± 0.05 and 1.52 ± 0.08, which is the first successful description of these experimental results. The present DOM analysis of CaFe nuclei relied on an extended version of the DOM incorporating a shrinkable geometry to provide a more localized and stronger volume absorption at higher missing energies to correctly represent the SRC physics. The success of the DOM can be attributed to its simultaneous treatment of structure and reaction data, the latter requiring a depletion of the mean-field accompanied by the proper admixture of high-momentum components in the respective ground states.
ER -