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Hadronic Contributions to the Photon Vacuum Polarization and their Role in Precision Physics

F. Jegerlehner
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Abstract

I review recent evaluations of the hadronic contribution to the shift in the fine structure constant and to the anomalous magnetic moment of the muon. Substantial progress in a precise determination of these important observables is a consequence of substantially improved total cross section measurement by the CMD-2 and BES II collaborations and an improved theoretical understanding. Prospects for further possible progress is discussed.

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F. Jegerlehner. 2002-12-09. Hadronic Contributions to the Photon Vacuum Polarization and their Role in Precision Physics. https://doi.org/10.1088/0954-3899%2F29%2F1%2F311

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