A New Measurement of the Muon Magnetic Anomaly

Details A New Measurement of the Muon Magnetic Anomaly A New Measurement of the Muon Magnetic Anomaly

2000-02-08

arxiv.org/abs/nucl-ex/0002005v1

Physics

Nuclear Physics

Nuclear Experiment

Workshop on Physics and Detectors for DAPHNE Frascati, Italy ; 16 - 19 Nov 1999

Scientific paper

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 $a_{\mu}$ 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 $a_{\mu}(expt)=1~165~921(5) \cdot 10^{-9}$ (4 ppm) in agreement with standard theory.

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