New measurement of the anomalous magnetic moment of the positive muon

Authors
Carey, RM Earle, W Efstathiadis, E Hare, MF Hazen, ES Hughes, BJ Krienen, F Miller, JP Monich, V Ouyang, J Rind, O Roberts, BL Sulak, LR Trofimov, A Varner, G Worstell, WA Benedict, E Logashenko, I Benante, J Brown, HN Bunce, G Cullen, J Danby, GT Geller, J Hseuh, H Jackson, JW Jia, L Kochis, S Larsen, R Lee, YY Mapes, M Meng, W Morse, WM Pai, C Pearson, C Polk, I Prigl, R Rankowitz, S Sandberg, J Semertzidis, YK Shutt, R Snydstrup, L Soukas, A Stillman, A Tallerico, T Tanaka, M Toldo, F von Lintig, D Warburton, D Woodle, K Chertovskikh, A Druzhinin, VP Fedotovich, GV Grigorev, DN Golubev, VB Khazin, BI Maksimov, A Merzliakov, Y Ryskulov, N Serednyakov, S Shatunov, YM Solodov, E Orlov, Y Winn, D Grossmann, A Gerhaeuser, J Jungmann, K von Walter, P zu Putlitz, G Bunker, B Deninger, W Debevec, PT Hertzog, DW Jones, TD Polly, C Sedykh, S Urner, D Haeberlen, U Endo, K Hirabayashi, H Kurokawa, S Yamamoto, A Green, MA Cushman, P Kindem, J Duong, L Giron, S McNabb, R Miller, D Timmermans, C Zimmerman, D Mizumachi, Y Iwasaki, M Ahn, HE Deng, H Dhawan, SK Disco, A Farley, FJM Fei, X Grosse-Perdekamp, M Hughes, VW Kawall, D Redin, SI Steinmetz, A
Citation
Rm. Carey et al., New measurement of the anomalous magnetic moment of the positive muon, PHYS REV L, 82(8), 1999, pp. 1632-1635
Citations number
19
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
00319007 → ACNP
Volume
82
Issue
8
Year of publication
1999
Pages
1632 - 1635
Database
ISI
SICI code
0031-9007(19990222)82:8<1632:NMOTAM>2.0.ZU;2-1
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 ang ular frequency difference, omega(a), between the spin precession and orbita l frequencies was determined by measuring the time distribution of high-ene rgy decay positrons. The ratio R of omega(a) to the Larmor precession frequ ency of free protons, omega(p), in the storage-ring magnetic field was meas ured. We find R = 3.707 220(48) X 10(-3). With mu(mu)/mu(p) = 3.183 345 47( 47) this gives a(mu+) = 1 165 925(15) X 10(-9) (+/-13 ppm), in good agreeme nt with the previous CERN measurements for mu(+) and mu(-) and of approxima tely the same precision.