Precise measurement of the positive muon anomalous magnetic moment

The Muon g-2 collaboration Brown, H.N. ; Bunce, G. ; Carey, R.M. ; et al.
Phys.Rev.Lett. 86 (2001) 2227-2231, 2001.
Inspire Record 552899 DOI 10.17182/hepdata.41719

A precise measurement of the anomalous g value, a_mu=(g-2)/2, for the positive muon has been made at the Brookhaven Alternating Gradient Synchrotron. The result a_mu^+=11 659 202(14)(6) X 10^{-10} (1.3 ppm) is in good agreement with previous measurements and has an error one third that of the combined previous data. The current theoretical value from the standard model is a_mu(SM)=11 659 159.6(6.7) X 10^{-10} (0.57 ppm) and a_mu(exp)-a_mu(SM)=43(16) X 10^{-10} in which a_mu(exp) is the world average experimental value.

1 data table

The anomalous G value is related to the gyromagnetic ratio by MOM(N=A_MU) =(G-2)/2.