Neutron skin systematics from microscopic equations of state

This paper presents an analysis of neutron skins based on fully microscopic equations of state, including chiral two- and three-nucleon forces consistently at next-to-next-to-next-to-leading order (${\mathrm{N}}^3\mathrm{LO}$). Other theoretical predictions and recent constraints are also addressed, such as those from the PREX II experiment and the latest parity-violating electron scattering measurement of the ${}^{27}\mathrm{Al}$ neutron skin.

Figure 1

Red bars: Neutron skin of ${}^{58}\mathrm{Ni}, {}^{27}\mathrm{Al}, {}^{59}\mathrm{Co}, {}^{90}\mathrm{Zr}, {}^{48}\mathrm{Ca}$, and ${}^{208}\mathrm{Pb}$, in order of increasing isospin asymmetry, as predicted in Refs. [2, 3]. The shaded area is bounded by linear fits to the data [23].

Figure 2

Red bars: neutron skins of tin isotopes, ${}^{116}\mathrm{Sn}, {}^{118}\mathrm{Sn}, {}^{120}\mathrm{Sn}, {}^{122}\mathrm{Sn}$, and ${}^{124}\mathrm{Sn}$, as predicted with the EoSs of Refs. [2, 3]. Gray bars: data from Ref. [35].