Abstract
These proceedings outline the new program of neutron skin measurements utilising coherent pion photoproduction from nuclei. The experimental program utilizes the Crystal Ball and TAPS detector systems at the tagged photon beam facility at MAMI. Recent results from the program and future plans are presented.
Highlights
The coherent production of π0 mesons from nuclei is a promising method to extract information on the size and nature of neutron skins in nuclei
A detailed and accurate understanding of the properties of neutron skins would provide valuable constraint on nuclear theories [6,7,8,9,10,11,12,13, 15,16,17,18,19, 21, 22] which predict a wide range of neutron skin thicknesses, despite being constrained by the wealth of data on other nuclear properties
Information on the equation of state (EOS) for neutron rich matter can be extracted from neutron skin measurements, due to the tight correlation between the size of the neutron skin and the magnitude of poorly established parameters of the EOS
Summary
The coherent production of π0 mesons from nuclei is a promising method to extract information on the size and nature of neutron skins in nuclei. The poor knowledge of this quantity has consequences for our understanding of basic properties of neutron stars, including mass-radii relationships and possible cooling mechanisms. In these proceedings are presented recent measurements and future plans for coherent pion photoproduction from nuclei using the Crystal Ball and TAPS detectors at the MAMI beam facility in Mainz, Germany. These experiments achieve the statistical and systematic precision necessary to infer for the first time an accurate information on the neutron skin of nuclei from this reaction.
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