Journal
PHYSICS LETTERS B
Volume 649, Issue 2-3, Pages 173-179Publisher
ELSEVIER
DOI: 10.1016/j.physletb.2007.04.012
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Funding
- Science and Technology Facilities Council [PP/C001907/1] Funding Source: researchfish
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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(-) -> 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) x 10(-10) is about 3 x 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 +/- 0.030. (c) 2007 Elsevier B.V. All rights reserved.
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