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Title: 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 parametersJ,L,KsymandQsym. Corroboration of these constraints onJandLcan 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 withL. 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 givesJ= 32.2 ± 1.7 MeV andL= 52.9 ± 13.2 MeV, in excellent agreement with neutron matter predictions ofJ= 32.0±1.1 MeV andL= 51.9±7.9 MeV.  more » « less
Award ID(s):
2020275
PAR ID:
10610433
Author(s) / Creator(s):
Publisher / Repository:
IOP
Date Published:
Journal Name:
Journal of Physics: Conference Series
Volume:
2536
Issue:
1
ISSN:
1742-6588
Page Range / eLocation ID:
012009
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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