Comment on "Neutron Skin of $^{208}$Pb from Coherent Pion Photoproduction"

Abstract

We argue that the reaction mechanism for the coherent pion production is not known with sufficient accuracy to determine the neutron radius of 208Pb to the claimed precision of 0.03 fm.

2 pages, 0 figures, Comment on C.M. Tarbert et al Phys. Rev. Lett. 112, 242502 (2014)