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arXiv · 1105.2384

The Radius of the Proton: Size Does Matter

J. D. Carroll·A. W. Thomas·J. Rafelski·G. A. Miller
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Abstract

The measurement by Pohl et al. [1] of the 2S_1/2^F=1 to 2P_3/2^F=2 transition in muonic hydrogen and the subsequent analysis has led to a conclusion that the rms charge radius of the proton differs from the accepted (CODATA [2]) value by approximately 4%, leading to a 4.9 s.d. discrepancy. We investigate the muonic hydrogen spectrum relevant to this transition using bound-state QED with Dirac wave-functions and comment on the extent to which the perturbation-theory analysis which leads to the above conclusion can be confirmed.

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J. D. Carroll, A. W. Thomas, J. Rafelski, G. A. Miller. 2011-05-12. The Radius of the Proton: Size Does Matter. https://doi.org/10.1063/1.3587581

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