Sensitivity of neutron radii in the $""sup208_{P}bnucleusandaneutronstartonucleon-$ sigma_-$ rho_ coupling corrections in relativistic mean field theory

Abstract

We study the sensitivity of the neutron skin thickness, $S$, in a ${}^{208}$Pb nucleus to the addition of nucleon-sigma-rho coupling corrections to a selection (PK1, NL3, S271, Z271) of interactions in relativistic mean field model. The PK1 and NL3 effective interactions lead to a minimum value of $S$ = 0.16 fm in comparison with the original value of $S$ = 0.28 fm. The S271 and Z271 effective interactions yield even smaller values of $S$ = 0.11 fm, which are similar to those for nonrelativistic mean field models. A precise measurement of the neutron radius, and therefore $S$, in ${}^{208}$Pb will place an important constraint on both relativistic and nonrelativistic mean field models. We also study the correlation between the radius of a 1.4 solar-mass neutron star and $S$.

40 pages 13 figures. to be published in Physical Review C

References in corpus (5)

• New effective interactions in RMF theory with non-linear terms and density-dependent meson-nucleon coupling
• Low Mass Neutron Stars and the Equation of State of Dense Matter
• On the nuclear symmetry energy and the neutron skin in neutron-rich nuclei
• Neutron Densities from a Global Analysis of Medium Energy Proton Nucleus Elastic Scattering
• Density dependencies of interaction strengths and their influence on nuclear matter and neutron star in relativistic mean field theory

Cited by in corpus (5)

• Relativistic Continuum Hartree Bogoliubov Theory for Ground State Properties of Exotic Nuclei
• Low Densities Instability of Relativistic Mean Field Models
• Isovector Channel Role of Relativistic Mean Field Models in the Neutrino Mean Free Path
• Effects of the density dependence of nuclear symmetry energy on properties of superheavy nuclei
• Neutrino Electromagnetic Form Factors Effect on the Neutrino Cross Section in Dense Matter