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arXiv · 1306.6034

Has a thick neutron skin in ${}^{208}$Pb been ruled out?

F. J. Fattoyev·J. Piekarewicz
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Abstract

The Lead Radius Experiment (PREX) has provided the first model-independent evidence in favor of a neutron-rich skin in ${}^{208}$Pb. Although the error bars are large, the reported large central value of 0.33\,fm is particularly intriguing. To test whether such a thick neutron-skin in ${}^{208}$Pb is already incompatible with laboratory experiments or astrophysical observations, we employ relativistic models with neutron-skin thickness in ${}^{208}$Pb ranging from 0.16 to 0.33 fm to compute ground state properties of finite nuclei, their collective monopole and dipole response, and mass-{\sl vs}-radius relations for neutron stars. No compelling reason was found to rule out models with large neutron skins in ${}^{208}$Pb from the set of observables considered in this work.

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F. J. Fattoyev, J. Piekarewicz. 2013-06-25. Has a thick neutron skin in ${}^{208}$Pb been ruled out?. https://doi.org/10.1103/physrevlett.111.162501

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