Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2005-01-05
Phys.Rev.C71:015802,2005; Erratum-ibid.C75:029902,2007
Physics
Nuclear Physics
Nuclear Theory
40 pages 13 figures. to be published in Physical Review C
Scientific paper
10.1103/PhysRevC.71.015802
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 $S$.
Hillhouse G. C.
Li Jiying
Meng Jie
Shen Guoyin
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