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arXiv · 2010.01398

The FAMU experiment at RIKEN RAL for a precise measure of the proton radius

M. Bonesini
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Abstract

The goal of the FAMU experiment at RIKEN RAL is the measure of the hyperfine splitting of the ground state of the muonic hydrogen, to allow a determination of the proton Zemach radius with a precision better than $5 \times 10^{-3}$ . The comparison of this measurement with the ones done with ordinary hydrogen may help to solve the so-called "proton radius puzzle", triggered by the $6 \sigma$ discrepancy in the proton charge radius value as extracted from muonic Lamb shift and the value based on e-p scattering and ordinary hydrogen spectroscopy.

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M. Bonesini. 2020-10-03. The FAMU experiment at RIKEN RAL for a precise measure of the proton radius. https://arxiv.org/abs/2010.01398

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