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arXiv · 1606.05977

The anti-proton charge radius

P. Crivelli·D. Cooke·M. W. Heiss
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Abstract

The upcoming operation of the Extra Low ENergy Antiprotons (ELENA) ring at CERN, the upgrade of the anti-proton decelerator (AD), and the installation in the AD hall of an intense slow positron beam with an expected flux of $10^{8}$ e$^+$/s will open the possibility for new experiments with anti-hydrogen ($\bar{\text{H}}$). Here we propose a scheme to measure the Lamb shift of $\bar{\text{H}}$. For a month of data taking, we anticipate an uncertainty of 100 ppm. This will provide a test of CPT and the first determination of the anti-proton charge radius at the level of 10%.

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P. Crivelli, D. Cooke, M. W. Heiss. 2016-06-20. The anti-proton charge radius. https://doi.org/10.1103/physrevd.94.052008

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