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A New Measurement of the Muon Magnetic Anomaly

K. Jungmann·:·g-2 collaboration
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Abstract

The muon magnetic anomaly may contain contributions from physics beyond the standard model. At the Brookhaven National Laboratory (BNL) a precision experiment aims for a measurement of the muon magnetic anomaly $a_μ$ to 0.35 ppm, where conclusions about various theoretical approaches beyond standard theory can be expected. The difference between the spin precession and cyclotron frequencies is measured in a magnetic storage ring with highly homogeneous field. Data taking is in progress and part of all recorded data has been analyzed. Combining all experimental results to date yields preliminarily $a_μ(expt)=1~165~921(5) \cdot 10^{-9}$ (4 ppm) in agreement with standard theory.

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K. Jungmann, :, g-2 collaboration. 2000-02-08. A New Measurement of the Muon Magnetic Anomaly. https://arxiv.org/abs/nucl-ex/0002005

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