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arXiv · 1201.3038

Direct Measurement of the Proton Magnetic Moment

J. DiSciacca·G. Gabrielse
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Abstract

The proton magnetic moment in nuclear magnetons is measured to be $\mu_p/\mu_N \equiv g/2 = 2.792\,846 \pm 0.000\,007$, a 2.5 ppm (parts per million) uncertainty. The direct determination, using a single proton in a Penning trap, demonstrates the first method that should work as well with an antiproton as with a proton. This opens the way to measuring the antiproton magnetic moment (whose uncertainty has essentially not been reduced for 20 years) at least $10^3$ times more precisely.

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J. DiSciacca, G. Gabrielse. 2012-01-14. Direct Measurement of the Proton Magnetic Moment. https://doi.org/10.1103/physrevlett.108.153001

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