Abstract
The KLOE Experiment at the ϕ factory DAψNE has measured the cross section σ (e+e− → π +π −γ (γ) using two different selection criteria: requiring the photon emission at small polar angle and detecting the photon at large polar angle in the calorimeter. Using a theoretical radiator function we extract the cross section σ (e+e− → π +π −) and obtain the π contribution to the muon anomalous magnetic moment. Results presented come from the analysis of 240 pb-1 collected in 2002, with improved systematic uncertainty with respect to the published KLOE analysis.
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