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

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

2001-04-30

arxiv.org/abs/hep-ph/0104304v2

J.Phys.G29:101-110,2003

Physics

High Energy Physics

High Energy Physics - Phenomenology

17 pages 7 figures 2 tables, update: incl. CMD-2 data, references

Scientific paper

10.1088/0954-3899/29/1/311

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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