New measurement of the anomalous magnetic moment of the positive muon

R. M. Carey, W. Earle, E. Efstathiadis, M. F. Hare, E. S. Hazen, B. J. Hughes, F. Krienen, J. P. Miller, V. Monich, J. Ouyang, O. Rind, B. L. Roberts, L. R. Sulak, A. Trofimov, G. Varner, W. A. Worstell, E. Benedict, I. Logashenko, J. Benante, H. N. BrownG. Bunce, J. Cullen, G. T. Danby, J. Geller, H. Hseuh, J. W. Jackson, L. Jia, S. Kochis, R. Larsen, Y. Y. Lee, M. Mapes, W. Meng, W. M. Morse, C. Pai, C. Pearson, I. Polk, R. Prigl, S. Rankowitz, J. Sandberg, Y. K. Semertzidis, R. Shutt, L. Snydstrup, A. Soukas, A. Stillman, T. Tallerico, M. Tanaka, F. Toldo, D. von Lintig, D. Warburton, K. Woodle, A. Chertovskikh, V. P. Druzhinin, G. V. Fedotovich, D. N. Grigorev, V. B. Golubev, B. I. Khazin, A. Maksimov, Yu Merzliakov, N. Ryskulov, S. Serednyakov, Yu M. Shatunov, E. Solodov, Y. Orlov, D. Winn, A. Grossmann, J. Gerhaeuser, K. Jungmann, P. von Walter, G. Zu Putlitz, B. Bunker, W. Deninger, P. T. Debevec, D. W. Hertzog, T. D. Jones, C. Polly, S. Sedykh, D. Urner, U. Haeberlen, K. Endo, H. Hirabayashi, S. Kurokawa, A. Yamamoto, M. A. Green, P. Cushman, J. Kindem, L. Duong, S. Giron, R. Mc Nabb, D. Miller, C. Timmermans, D. Zimmerman, Y. Mizumachi, M. Iwasaki, H. E. Ahn, H. Deng, S. K. Dhawan, A. Disco, F. J.M. Farley, X. Fei, M. Grosse-Perdekamp, V. W. Hughes, D. Kawall, S. I. Redin, A. Steinmetz

Research output: Contribution to journalArticlepeer-review


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, ωabetween the spin precession and orbital frequencies was determined by measuring the time distribution of high-energy decay positrons. The ratio R of ωato the Larmor precession frequency of free protons, ωpin the storage-ring magnetic field was measured. We find R = 3.707220(48) × 10-3. With μμp= 3.18334547(47) this gives aμ+= 1165925(15) × 10-9(±13 ppm), in good agreement with the previous CERN measurements for μ+and μ-and of approximately the same precision.

Original languageEnglish (US)
Pages (from-to)1632-1635
Number of pages4
JournalPhysical review letters
Issue number8
StatePublished - 1999
Externally publishedYes

ASJC Scopus subject areas

  • General Physics and Astronomy


Dive into the research topics of 'New measurement of the anomalous magnetic moment of the positive muon'. Together they form a unique fingerprint.

Cite this