Speaker
Description
In this talk, I will review the lattice QCD calculation of the electric and magnetic electric form factors and the extraction of the proton charge radius. I will use the recent work done by the NME collaboration [1], and updates to it (preliminary results with improved data sets) to illustrate the issues. These high statistics lattice QCD calculations, show that the electric and magnetic electric form factors are consistent with the Kelly parametrization of the experimental data over the range 0.04≲Q^2≲1.2GeV but have larger uncertainties than the experimental data. A heuristic parametrization of the form factor for phenomenological analyses will be presented. Last, I will compare these results with those obtained by other lattice QCD collaborations.
[1] PRD 105 054505 (2022)
