Measuring the surface thickness of the weak charge density of nuclei
Abstract
The present PREX-II and CREX experiments are measuring the rms radius of the weak charge density of 208Pb and 48Ca. We discuss the feasibility of a new parity violating electron scattering experiment to measure the surface thickness of the weak charge density of a heavy nucleus. Once PREX-II and CREX have constrained weak radii, an additional parity violating measurement at a momentum transfer near 0.76 fm-1 for 208Pb or 1.28 fm-1 for 48Ca can determine the surface thickness.
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