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arXiv · 1302.1735

Hadronic Contribution to the muon $g-2$ factor

S. Bodenstein·C. A. Dominguez·K. Schilcher·H. Spiesberger
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Abstract

The lowest order hadronic contribution to the $g-2$ factor of the muon is analyzed in the framework of the operator product expansion at short distances, and a QCD finite energy sum rule designed to quench the role of the $e^+ e^-$ data. This procedure reduces the discrepancy between experiment and theory, $Δa_μ\equiv a^{EXP}_μ- a^{SM}_μ$, from $Δa_μ= 28.7 (8.0) \times 10^{-10}$ to $Δa_μ= 19.2 (8.0) \times 10^{-10}$, i.e. without changing the uncertainty.

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S. Bodenstein, C. A. Dominguez, K. Schilcher, H. Spiesberger. 2013-06-17. Hadronic Contribution to the muon $g-2$ factor. https://doi.org/10.1103/physrevd.88.014005

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