Determining the neutron skin thickness by relativistic semi-isobaric collisions
Abstract
The neutron skin thickness of the benchmark nucleus 208Pb is crucial for our understanding of the equation of state of nuclear matter. In this paper, we discuss the effect of the neutron skin on the flow ratio observables in the semi-isobaric collisions 208Pb+208Pb and 197Au+197Au using iEBE-VISHNU hydrodynamic simulations. Our results suggest that 208Pb and 197Au should have the same magnitude of neutron skin thickness to describe the anisotropic flow ratios between the semi-isobaric systems. Our method provides an unconventional way to determine the neutron skin with the existing relativistic heavy ion collision data.
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