Improved predictions for g-2 of the muon and \alpha_{\rm QED}(M_Z^2)

By K. Hagiwara, Alan D. Martin, D. Nomura, T. Teubner. 2006

190 citations recorded by the source corpus.

We update the Standard Model predictions of the anomalous magnetic moment of the muon, a_\mu = (g-2)/2, and the value of the QED coupling at the Z-boson mass, incorporating the new e^+e^- \to \pi\pi data obtained by CMD-2 and KLOE, as well as the corrected SND data, and other improvements. The prediction for a_\mu=11659180.4 (5.1) \times 10^{-10} is about 3 \times 10^{-10} lower than before, and has a smaller uncertainty, which corresponds to a 3.4\sigma deviation from the measured value. The prediction for the QED coupling is \alpha(M_Z^2)^{-1}= 128.937 \pm 0.030.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/59f4052a5bbc808c38dda920503926f063b1f7a6

Citations in the corpus

• The impact of priors and observables on parameter inferences in the constrained MSSM (2008, unknown): “parameter µ � (exper.) Mt 172.6 GeV 1.4 GeV [24] mb(mb)MS 4.20 GeV 0.07 GeV [25] �s(MZ)MS 0.1176 0.002 [25] 1/�em(MZ)MS 127.955 0.03 [ 26 ]”