August 29, 2022 to September 4, 2022
America/New_York timezone

Lattice calculation of the proton charge radius

Sep 3, 2022, 4:30 PM
30m
Palm Ballroom 1 ,

Palm Ballroom 1 ,

Parallel session talk Precision Physics at High Intensities HI: Precision Physics at High Intensities

Speaker

Sungwoo Park (Jefferson Lab)

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)

Primary author

Sungwoo Park (Jefferson Lab)

Presentation materials