Proton radius,Darwin-Foldy term and radiative corrections |
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Authors: | U D Jentschura |
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Institution: | 1.Department of Physics,Missouri University of Science and Technology,Rolla,USA;2.Institut für Theoretische Physik,Universit?t Heidelberg,Heidelberg,Germany |
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Abstract: | We discuss the role of the so-called Darwin-Foldy term in the evaluation
of the proton and deuteron charge radii from atomic hydrogen spectroscopy
and nuclear scattering data. The question of whether this
term should be included or excluded from the nuclear radius
has been controversially discussed in the literature. We attempt to
clarify which literature values correspond to which conventions.
A detailed discussion of the conventions appears useful because a
recent experiment R. Pohl et al., Nature 466, 213 (2010)]
has indicated that there is a discrepancy between the proton
charge radii inferred from ordinary (“electronic”)
atomic hydrogen and muonic hydrogen.
We also investigate the role of quantum
electrodynamic radiative corrections in the determination of nuclear radii from
scattering data, and propose a definition of the nuclear self energy which is
compatible with the subtraction of the radiative corrections in scattering
experiments. |
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Keywords: | |
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