Introduction Theoretical tools Results Conclusions Dalitz plot analysis of with the KLOE experiment Frascati 19 Luglio 2007 OLD – NEW systematic uncertainties Effect Low · 10 3 Medium I · 10 3 Medium II · 10 3 Medium III · 10 3 High · 10 3 Res 9 6 4 3 3 Low E 1.6 1.9 1.6 1.3 1.4 Bkg0.