Speaker
Description
The neutron charge radius can be extracted by determining the slope of Sachs form factor GEn as Q2 -> 0. One can combine global neutron and proton GE data and exploit charge symmetry to perform a flavor dependent decomposition of the nucleon's Dirac form factors and simultaneously extract the proton and neutron charge radii. The resulting proton charge radius using this method is consistent with results obtained from muonic hydrogen spectroscopy. The neutron charge radius extraction compliments previous measurements that relied solely on neutron-electron scattering data which appears to have underlying systematic discrepancies. Additional leverage in the low Q2 region of GEn may be obtained through N-Delta transition form factor data. A discussion of the methodology behind the extraction of the radii and the impact of including N-Delta TFFs will be presented.
