Constraint on Symmetry Energy Slope Using Neutron Skins of 48ca, 64ni, 124sn, and 208pb and Its Impact on Neutron Star Radius

We constrain the symmetry energy slope L at the saturation density using the neutron skin values of Ca-48, Ni-64, Sn-124, and Pb-208 determined by various experiments. The resulting L of 50(6) MeV is consistent with the world-averaged value from different observables and methodologies. The implications of newly constrained L on the radius determinations of 1.4 solar-mass neutron stars are also discussed based on the established -L linear relationships by the DD-ME2 and TW99 EoS families.