Ab initio computations of the fourth-order charge density moments of 48Ca and 208Pb
Year: 2025
Type: article
Abstract: Neutron skins of neutron-rich nuclei connect nuclei with the matter in neutron stars. High-precision measurements of nuclear charge densities to extract higher-order moments are proposed to be sensitive to neutron radii and skin thicknesses. We investigate the charge density of 48 Ca and 208 Pb, leading candidates for such studies, with ab initio nuclear structure calculations. We find strong correlations between the fourth-order charge density moment R ch 4 and the charge and neutron radii, allowing us to predict R ch 4 for 48 Ca and 208 Pb. We find a substantially weaker correlation between the fourth-order charge density moment and the neutron skin, limiting the ability of high-precision electron scattering to determine the neutron skin in a model-independent manner.
Source: Physics Letters B
Authors: T. Miyagi, M. Heinz, A. Schwenk
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: diamond
Funders: U.S. Department of Energy, University of Tsukuba, Gauss Centre for Supercomputing, Office of Science, Horizon 2020 Framework Programme, National Institute of Corrections, European Research Council, Japan Society for the Promotion of Science, Advanced Scientific Computing Research, Exploratory Research for Advanced Technology, Oak Ridge National Laboratory
Awards: G121915436, G4071980169, Large-scale ab initio calculations of sd-shell nuclei and many-body correlations, Nuclear matrix elements of heavy nuclei from first principles, Description of collective motion in medium-heavy nuclei by the collaboration of ab initio theory and phenomenology, G8142980423
OpenAlex ID: W4416410419