How do mirror charge radii constrain density dependence of the symmetry energy?

Hu, Bai-Shan

doi:10.1016/j.physletb.2024.138969

How do mirror charge radii constrain density dependence of the symmetry energy?

Journal Article · Thu Aug 22 00:00:00 EDT 2024 · Physics Letters. B

DOI:https://doi.org/10.1016/j.physletb.2024.138969· OSTI ID:2447338

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TRIUMF, Vancouver, BC (Canada); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). National Center for Computational Sciences (NCCS)

It has recently been suggested that differences in the charge radii of mirror nuclei (Δ$$R^{mirr}_{ch}$$) are strongly correlated with the neutron-skin thickness ($$R_{skin}$$) of neutron-rich nuclei and with the slope of the symmetry energy ($$L$$). To test this assumption, we present ab initio calculations of $$R_{skin}$$ in ⁴⁸Ca and ²⁰⁸Pb, Δ$$R^{mirr}_{ch}$$ in ³⁶Ca$$-$$³⁶S, ³⁸Ca$$-$$³⁸Ar, ⁴¹Sc$$-$$⁴¹Ca, ⁴⁸Ni$$-$$⁴⁸Ca, ⁵²Ni$$-$$⁵²Cr, and ⁵⁴Ni$$-$$⁵⁴Fe mirror pairs, and $$L$$. Employing the recently developed 34 chiral interaction samples, identified by the history matching approach, we conduct rigorous statistical analysis of correlations among Δ$$R^{mirr}_{ch}$$, $$R_{skin}$$ and $$L$$, accounting for quantified uncertainties from low-energy constants of chiral interaction, chiral effective field theory truncation and many-body method approximation. The ab initio results reveal an appreciable Δ$$R^{mirr}_{ch}$$ $$-$$ $$L$$ correlation in $fp$-shell mirror pairs. However, contrary to previous studies, the present calculation finds that the studied $sd$-shell mirror pairs do not exhibit any Δ$$R^{mirr}_{ch}$$ $$-$$ $$L$$ correlation.

View Accepted Manuscript (DOE)

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

Sponsoring Organization:: 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:: 2447338

Journal Information:: Physics Letters. B, Journal Name: Physics Letters. B Vol. 857; ISSN 0370-2693

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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How do mirror charge radii constrain density dependence of the symmetry energy?

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