Constraints on the Nuclear Symmetry Energy from Experiments, Theory and Observations

Abstract

Nuclear mass measurements and neutron matter theory tightly constrain the nuclear symmetry energy parameters $J$, $L$, $K_{sym}$ and $Q_{sym}$. Corroboration of these constraints on $J$ and $L$ can be found from measurements of the neutron skin thicknesses and dipole polarizabilities of neutron-rich nuclei. The experimental constraints on these parameters are compared with those obtained from consideration of astrophysical measurements of the neutron star radius, which we show is highly correlated with $L$. Attention is aimed at the recent PREX and CREX neutron skin measurements from Jefferson Lab, NICER neutron star radius measurements, and a new interpretation of the GW170817 tidal deformability measurement. We find joint satisfaction of PREX and CREX gives $J=32.2\pm 1.7$ MeV and $L=52.9\pm 13.2$ MeV, in excellent agreement with neutron matter predictions of $J=32.0\pm 1.1$ MeV and $L=51.9\pm 7.9$ MeV.

arXiv commentCompact Stars in the QCD Phase Diagram (CSQCD) IX, Banff, Canada, 2022. arXiv admin note: substantial text overlap with arXiv:2301.03666

References in corpus (31)

• Modern Theory of Nuclear Forces
• Neutron Star Structure and the Equation of State
• Chiral effective field theory and nuclear forces
• Neutron Star Observations: Prognosis for Equation of State Constraints
• Isospin Asymmetry in Nuclei and Neutron Stars
• Revealing the Superfluid Lambda Transition in the Universal Thermodynamics of a Unitary Fermi Gas
• Neutron-Rich Nuclei in Heaven and Earth
• Skyrme Interaction and Nuclear Matter Constraints
• Implications of PREX-II on the equation of state of neutron-rich matter
• Relativistic Mean-Field Hadronic Models under Nuclear Matter Constraints
• Constraining the Symmetry Parameters of the Nuclear Interaction
• Nuclear effective field theory: status and perspectives
• Constraints on neutron star radii based on chiral effective field theory interactions
• Chiral interactions up to next-to-next-to-next-to-leading order and nuclear saturation
• How well do we know the neutron-matter equation of state at the densities inside neutron stars? A Bayesian approach with correlated uncertainties
• Symmetry Parameter Constraints From A Lower Bound On The Neutron-Matter Energy
• Precise characterization of ^6Li Feshbach resonances using trap-sideband resolved RF spectroscopy of weakly bound molecules
• Neutron skin of ${}^{208}$Pb from Coherent Pion Photoproduction
• Nuclear matter incompressibility coefficient in relativistic and nonrelativistic microscopic models
• Limiting masses and radii of neutron stars and their implications
• Quantifying uncertainties and correlations in the nuclear-matter equation of state
• Neutron density distributions from antiprotonic 208Pb and 209Bi atoms
• Neutron skins of atomic nuclei: per aspera ad astra
• Symmetric nuclear matter from the strong interaction
• Combined theoretical analysis of the parity-violating asymmetry for ${}^{48}$Ca and ${}^{208}Pb$
• Electroweak Measurements of Neutron Densities in CREX and PREX at JLab, USA
• Divergence of the isospin-asymmetry expansion of the nuclear equation of state in many-body perturbation theory
• Neutron skins of ${}^{208}$Pb and ${}^{48}$Ca from pionic probes
• New Ideas in Constraining Nuclear Forces
• Direct determination of the neutron skin thicknesses in ${}^{40,48}$Ca from proton elastic scattering at $E_p=295$ MeV
• Neutron skin in ${}^{48}$Ca determined from p+${}^{48}$Ca and ${}^{48}$Ca+${}^{12}$C scattering

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