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Journal Article

New measurement of the anomalous magnetic moment of the positive muon

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http://pubman.mpdl.mpg.de/cone/persons/resource/persons93258

Haeberlen,  U.
Research Group Prof. Dr. Haeberlen, Max Planck Institute for Medical Research, Max Planck Society;

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Citation

Carey, R. M., Earle, W., Efstathiadis, E., Hare, M. F., Hazen, E. S., Hughes, B. J., et al. (1999). New measurement of the anomalous magnetic moment of the positive muon. Physical Review Letters, 82(8), 1632-1635. doi:10.1103/PhysRevLett.82.1632.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0024-AA17-B
Abstract
The muon anomalous magnetic moment has been measured in a new experiment at Brookhaven. Polarized muons were stored in a superferric ring, and the angular frequency difference, omegaa, between the spin precession and orbital frequencies was determined by measuring the time distribution of high-energy decay positrons. The ratio R of omegaa to the Larmor precession frequency of free protons, omegap, in the storage-ring magnetic field was measured. We find R = 3.707 220(48) 103. With /p = 3.183 345 47(47) this gives a+ = 1 165 925(15) 109 (13 ppm), in good agreement with the previous CERN measurements for + and and of approximately the same precision