Hadronic Contributions to the Photon Vacuum Polarization and their Role in Precision Physics
High Energy Physics - Phenomenology
2008-11-26 v2
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.
Keywords
Cite
@article{arxiv.hep-ph/0104304,
title = {Hadronic Contributions to the Photon Vacuum Polarization and their Role in Precision Physics},
author = {F. Jegerlehner},
journal= {arXiv preprint arXiv:hep-ph/0104304},
year = {2008}
}
Comments
17 pages 7 figures 2 tables, update: incl. CMD-2 data, references