Toward a resolution of the proton size puzzle

G. A. Miller, A. W. Thomas, J. D. Carroll, Johann Rafelski

Research output: Contribution to journalArticle

41 Citations (Scopus)

Abstract

We show that off-mass-shell effects arising from the internal structure of the proton provide a new proton polarization mechanism in the Lamb shift, proportional to the lepton mass to the fourth power. This effect is capable of resolving the current puzzle regarding the difference in the proton radius extracted from muonic compared with electronic hydrogen experiments. These off-mass-shell effects could be probed in several other experiments. A significant ambiguity appearing in dispersion relation evaluations of the proton polarizability contribution to the Lamb shift is noted.

Original languageEnglish (US)
Article number020101
JournalPhysical Review A
Volume84
Issue number2
DOIs
StatePublished - Aug 16 2011

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protons
shift
ambiguity
leptons
radii
evaluation
polarization
hydrogen
electronics

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Toward a resolution of the proton size puzzle. / Miller, G. A.; Thomas, A. W.; Carroll, J. D.; Rafelski, Johann.

In: Physical Review A, Vol. 84, No. 2, 020101, 16.08.2011.

Research output: Contribution to journalArticle

Miller, G. A. ; Thomas, A. W. ; Carroll, J. D. ; Rafelski, Johann. / Toward a resolution of the proton size puzzle. In: Physical Review A. 2011 ; Vol. 84, No. 2.
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