Title: Status of Leading-Order Hadronic Vacuum Polarization Dispersion Calculation
Abstract: The leading-order hadronic contribution to the muon magnetic anomaly a µ ≡ (g µ -2)/2, calculated using a dispersion integral of e + e -annihilation data and τ decay data, is briefly reviewed.This contribution has the largest uncertainty to the predicted value of a µ , which differs from the experimental value by ∼ 3.6 (2.4) standard deviations for the e + e -(τ) based analysis.New results since the last workshop and main open issues on the subject are discussed.