Abstract
The KLOE experiment at the DAΦNE ϕ-factory has performed a new precise measurement of the pion form factor using Initial State Radiation events, with photons emitted at large polar angle. This measurement extends the M π π 2 region covered by KLOE ISR measurements of the pion form factor down to the two pion production threshold. The value obtained in this measurement of the di-pion contribution to the muon anomalous magnetic moment confirms the discrepancy between the Standard Model evaluation for a μ and the experimental value measured by the (g-2) collaboration at BNL. A combination of this new result with the previous KLOE results allow to cover ∼ 70% of the leading order hadronic contribution to the muon anomaly with 1% total fractional error.
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