New high-Q^2 form factor results published in PRL

New precision cross section measurements for high-energy elastic electron-proton scattering from Jefferson Lab’s Hall A have recently been published in Physical Review Letters. The measurements significantly improve the precision of the world’s knowledge of the proton magnetic form factor at large momentum transfers and establish that the discrepancy between extractions of the proton’s electric/magnetic form factor ratio from cross section and polarization measurements persists to large values of Q2. The supplemental material for the publication can be found here. The preprint of the accepted manuscript, titled “Form Factors and Two-Photon Exchange in High-Energy Elastic Electron-Proton Scattering” can be found on the arXiv.