Precise determinations of neutron skin in doubly magic nuclei

A wide variety of nuclear structure models have successfully described current experimental data and make predictions used in many areas of physics. The difference between the average extent of neutrons and the average extend of protons in a heavy nucleus (commonly named neutron skin) is such a quantity. This talk will give an overview of the recently published experimental results from the PREX and CREX collaborations. These advantage of these measurements lies in the use of an electroweak probe to measure these quantities, significantly reducing uncertainties from theoretical interpretations. The doubly magic nuclei 208Pb and 48Ca were used to constrain both Density Functional Theory and ab-initio calculations.