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.

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Cited by in corpus (17)

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• Electromagnetic Structure of Few-Nucleon Ground States
• Nucleon Electromagnetic Form Factors in the Continuum Limit from 2+1+1-flavor Lattice QCD
• Polynomial fits and the proton radius puzzle
• Zemach moments of 3He and 4He
• Review of experimental and theoretical status of the proton radius puzzle
• The next generation of laser spectroscopy experiments using light muonic atoms
• Nuclear structure corrections to the Lamb shift in ${\mu }^3$He${}^{+}$ and ${\mu }^3$H
• Experiments towards resolving the proton charge 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?
• Theoretical study on nuclear structure by the multiple Coulomb scattering and magnetic scattering of relativistic electrons
• Nucleon form factors and parton distributions in nonlocal chiral effective theory
• Extraction of the second and fourth radial moments of nuclear charge density from the elastic electron-nucleus scattering
• ToMCCA: A Toy Monte Carlo Coalescence Afterburner
• Comparison of results for the electromagnetic form factors of the proton at low $Q^2$