Speaker
Description
While the electromagnetic charge distribution of protons inside nuclei has been well determined using electron scattering experiments, significant progress still needs to be made to reach the same level of precision for neutrons. The parity violating asymmetry in longitudinally polarized elastic electron-nucleus scattering is sensitive to the neutron RMS radius. The PREX-2 collaboration has completed a measurement using this technique looking at the neutron-rich $^{208}$Pb nucleus. The clean theoretical connection between the parity violating asymmetry and other parameters of the nuclear equation of state allows for comparisons with other measurements (such as neutron star radii). In this talk we will present the recently published high precision result from data collected in 2019 using the CEBAF accelerator at Jefferson Lab.
