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arXiv · 1210.8310

Sensitivity of the electric dipole polarizability to the neutron skin thickness in ${}^{208}$Pb

X. Roca-Maza·B. K. Agrawal·G. Colo'·W. Nazarewicz·N. Paar·J. Piekarewicz·P. -G. Reinhard·D. Vretenar
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Abstract

The static dipole polarizability, $\alpha_{\rm D}$, in ${}^{208}$Pb has been recently measured with high-resolution via proton inelastic scattering at the Research Center for Nuclear Physics (RCNP). This observable is thought to be intimately connected with the neutron skin thickness, $r_{\rm skin}$, of the same nucleus and, more fundamentally, it is believed to be associated with the density dependence of the nuclear symmetry energy. The impact of $r_{\rm skin}$ on $\alpha_{\rm D}$ in ${}^{208}$Pb is investigated and discussed on the basis of a large and representative set of relativistic and non-relativistic nuclear energy density functionals (EDF).

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X. Roca-Maza, B. K. Agrawal, G. Colo', W. Nazarewicz, N. Paar, J. Piekarewicz, P. -G. Reinhard, D. Vretenar. 2012-10-31. Sensitivity of the electric dipole polarizability to the neutron skin thickness in ${}^{208}$Pb. https://doi.org/10.1063/1.4764239

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