The anomalous magnetic moment of the negative muon has been measured to a precision of 0.7ppm (ppm) at the Brookhaven Alternating Gradient Synchrotron. This result is based on data collected in 2001, and is over an order of magnitude more precise than the previous measurement for the negative muon. The result aμ-=11 659 214(8)(3)×10-10 (0.7ppm), where the first uncertainty is statistical and the second is systematic, is consistent with previous measurements of the anomaly for the positive and the negative muon. The average of the measurements of the muon anomaly is aμ(exp)=11 659 208(6)×10-10 (0.5ppm).
Physical Review Letters
- Pub Date:
- April 2004
- Electric and magnetic moments;
- Electroweak radiative corrections;
- High Energy Physics - Experiment
- 4 pages, 4 figures, submitted to Physical Review Letters, revised to reflect referee comments. Text further revised to reflect additional referee comments and a corrected Fig. 3 replaces the older version