Proton root-mean-square radii and electron scattering

Abstract

The standard procedure of extracting the proton root-mean-square radii from models for the Sachs form factors $G_e(q)$ and $G_m(q)$ fitted to elastic electron-proton scattering data %has a serious flaw. is more uncertain than traditionally assumed. The extrapolation of $G(q)$, from the region $q_{min}<q<q_{max}$ covered by data to momentum transfer $q=0$ where the $rms$-radius is obtained, often depends on uncontrolled properties of the parameterization used. Only when ensuring that the corresponding densities have a physical behavior at large radii $r$ can reliable $rms$-radii be determined.

References in corpus (3)

• High-precision determination of the electric and magnetic form factors of the proton
• The size of the proton - closing in on the radius puzzle
• Third Zemach Moment of the Proton

Cited by in corpus (4)

• Zemach moments of 3He and 4He
• Polynomial fits and the proton radius puzzle
• The recoil correction to the proton-finite-size contribution to the Lamb shift in muonic hydrogen
• Proton rms-radii from low-q power expansions?