Reinterpretation of classic proton charge form factor measurements

Abstract

In 1963, a proton radius of $0.805(11)\mathrm{fm}$ was extracted from electron scattering data and this classic value has been used in the standard dipole parameterization of the form factor. In trying to reproduce this classic result, we discovered that there was a sign error in the original analysis and that the authors should have found a value of $0.851(19)\mathrm{fm}$. We additionally made use of modern computing power to find a robust function for extracting the radius using this 1963 data's spacing and uncertainty. This optimal function, the Padé $(0,1)$ approximant, also gives a result which is consistent with the modern high precision proton radius extractions.

10 pages, 6 figures

References in corpus (8)

• High-precision determination of the electric and magnetic form factors of the proton
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• Precise determination of low-Q nucleon electromagnetic form factors and their impact on parity-violating e-p elastic scattering
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Cited by in corpus (3)

• Precise determination of proton magnetic radius from electron scattering data
• Charge radii of the nucleon from its flavor dependent Dirac form factors
• Elastic Positron-Proton Scattering at Low Q${}^2$