Fresh Extraction of the Proton Charge Radius from Electron Scattering
Fresh Extraction of the Proton Charge Radius from Electron Scattering
Schmidt, S. M.; Cui, Z.-F.; Roberts, C. D.; Binosi, D.
We present a novel method for extracting the proton radius from elastic electron-proton (ep) scattering data. The approach is based on interpolation via continued fractions augmented by statistical sampling and avoids any assumptions on the form of function used for the representation of data and subsequent
extrapolation onto Q2 ≃ 0. Applying the method to extant modern ep datasets, we find that all results are mutually consistent and, combining them, we arrive at rp = 0.847(8) fm. This result compares favorably with values obtained from contemporary measurements of the Lamb shift in muonic hydrogen, transitions
in electronic hydrogen, and muonic deuterium spectroscopy.
Keywords: electron; scattering; proton
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Physical Review Letters 127(2021)9, 092001
Online First (2021) DOI: 10.1103/PhysRevLett.127.092001
Cited 19 times in Scopus -
Contribution to WWW
arXiv:2102.01180 [hep-ph]: https://arxiv.org/abs/2102.01180
Permalink: https://www.hzdr.de/publications/Publ-34237