Ab initio computations of the fourth-order charge density moments of 48Ca and 208Pb

Miyagi, Takayuki; Heinz, Matthias; Schwenk, Achim

doi:10.1016/j.physletb.2025.140032

Ab initio computations of the fourth-order charge density moments of ⁴⁸Ca and ²⁰⁸Pb

Journal Article · Mon Nov 17 00:00:00 EST 2025 · Physics Letters. B

DOI:https://doi.org/10.1016/j.physletb.2025.140032· OSTI ID:3005430

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Univ. of Tsukuba (Japan)
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Technical Univ. of Darmstadt (Germany); GSI-Helmholtzzentrum fur Schwerionenforschung, Darmstadt (Germany); Max Planck Inst. fuer Kernphysik, Heidelberg (Germany)

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 ⁴⁸Ca and ²⁰⁸Pb, leading candidates for such studies, with ab initio nuclear structure calculations. We find strong correlations between the fourth-order charge density moment R$$^{4}_{ch}$$ and the charge and neutron radii, allowing us to predict R$$^{4}_{ch}$$ for ⁴⁸Ca and ²⁰⁸Pb. 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.

View Accepted Manuscript (DOE)

Research Organization:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Sponsoring Organization:: European Union’s Horizon 2020 research and innovation programme; Japan Science and Technology Agency Strategic Basic Research Programs (JST ERATO); Japan Society for the Promotion of Science (JSPS KAKENHI); USDOE Laboratory Directed Research and Development (LDRD) Program; USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR). Scientific Discovery through Advanced Computing (SciDAC); USDOE Office of Science (SC), Nuclear Physics (NP)

Grant/Contract Number:: AC05-00OR22725

OSTI ID:: 3005430

Journal Information:: Physics Letters. B, Journal Name: Physics Letters. B Vol. 872; ISSN 0370-2693

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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References (64)

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