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ISSN - 09205632, Nuclear Physics B - Proceedings Supplements, 2003, vol. 116, p. 215-219

News from the muon (g-2) experiment at BNL

Deile M., Bennett G. W., Bousquet B., Brown H. N., Bunce G., Carey R. M., Cushman P., Danby G. T., Debevec P. T., Deng H., Deninger W., Dhawan S. K., Druzhinin V. P., Duong L., Efstathiadis E., Farley F. J M, Fedotovich G. V., Giron S., Gray F., Grigoriev D., Große-Perdekamp M., Großmann A., Hare M. F., Hertzog D. W., Huang X., Hughes V. W., Iwasaki M., Jungmann K., Kawall D., Khazin B. I., Kindem J., Krienen F., Kronkvist I., Lam A., Larsen R., Lee Y. Y., Logashenko I., McNabb R., Meng W., Mi J., Miller J. P., Morse W. M., Nikas D., Onderwater C., Orlov Y., Özben C. S., Paley J., Peng Q., Polly C., Pretz J., Prigl R., zu Putlitz G., Qian T., Redin S. I., Rind O., Roberts B. L., Ryskulov N. M., Semertzidis Y. K., Shagin P., Shatunov Yu M., Sichtermann E., Solodov E., Sossong M., Steinmetz A., Sulak L. R., Trofimov A., Urner D., von Walter P., Warburton D., Yamamoto A.

The magnetic moment anomaly aμ = (gμ - 2)/2 of the positive muon has been measured at the Brookhaven Alternating Gradient Synchrotron with an uncertainty of 0.7 ppm. The new result, based on data taken in 2000, agrees well with previous measurements. Standard Model evaluations currently differ from the experimental result by 1.6 to 3.0 standard deviations.