Recent progress on isospin breaking corrections and their impact on the muon g-2 value
arXiv:1001.3703 · doi:10.1088/1674-1137/34/6/017
Abstract
We describe some recent results on isospin breaking corrections which are of relevance for predictions of the leading order hadronic contribution to the muon anomalous magnetic moment (amuhadLO) when using tau lepton data. When these corrections are applied to the new combined data on the pi^+pi^0 spectral function, the prediction for amuhadLO based on tau lepton data gets closer to the one obtained using e^+e^- data.
6 pages, 3 figures, Proceedings of the PhiPsi09 Workshop, Oct. 13-16, 2009, Beijing, China. Some typos corrected, and the FSR correction used in a previous work is added to Table 1
References in corpus (8)
- The Muon g-2
- Muon g-2: Review of Theory and Experiment
- Precise measurement of the e+ e- to pi+ pi- (gamma) cross section with the Initial State Radiation method at BABAR
- The hadronic contribution to (g-2) of the muon
- Long-distance radiative corrections to the di-pion tau lepton decay
- Models of Isospin Breaking in the Pion Form Factor: Consequences for the Determination of Pi_{ρω}(m_rho^2) and (g-2)_mu/2
- The width difference of rho vector mesons
- Model-dependent radiative corrections to tau- -> pi- pi0 nu revisited