Pauli Radius of the Proton
Pauli Radius of the Proton
Cui, Z.-F.; Binosi, D.; Roberts, C. D.; Schmidt, S. M.
Abstract
Using a procedure based on interpolation via continued fractions supplemented by statistical sampling, we analyze proton magnetic form factor data obtained via electron+proton scattering on Q2∈[0.027,0.55] GeV2 with the goal of determining the proton magnetic radius. The approach avoids assumptions about the function form used for data interpolation and ensuing extrapolation onto Q2≃0 for extraction of the form factor slope. In this way, we find Tm=0.817(27) fm. Regarding the difference between proton electric and magnetic radii calculated in this way, extant data are seen to be compatible with the possibility that the slopes of the proton Dirac and Pauli form factors, F1,2(Q2), are not truly independent observables; to wit, the difference F′1(0)−F′2(0)/κp=[1+κp]/[4m2p], viz., the proton Foldy term.
Keywords: pauli; radius; proton
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Chinese Physics Letters 38(2021)12, 121401
DOI: 10.1088/0256-307X/38/12/121401
Cited 8 times in Scopus -
Contribution to WWW
arXiv:2109.08768 [hep-ph]: https://arxiv.org/abs/2109.08768
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Permalink: https://www.hzdr.de/publications/Publ-34239