Hadronic Contributions to R and g-2 from Initial-State-Radiation Data
arXiv:0910.3294
Abstract
I review the recent efforts to improve the precision of the prediction of the anomalous moment of the muon, in particular of the hadronic contribution of the vacuum polarization, which is the contribution with the largest uncertainty. Focus is given to the recent result for e+e- -> pi+pi- by the BaBar collaboration, obtained using events with radiation in the initial state.
4 pages, 10 figures. To appear in the proceedings for XXIX Physics in Collision, International Symposium in Kobe, Japan, August 30 - September 2, 2009
References in corpus (3)
- Precise measurement of the e+ e- to pi+ pi- (gamma) cross section with the Initial State Radiation method at BABAR
- Reevaluation of the hadronic contribution to the muon magnetic anomaly using new e+e- -> pi+pi- cross section data from BABAR
- The Discrepancy Between tau and e+e- Spectral Functions Revisited and the Consequences for the Muon Magnetic Anomaly