The processes $e^+e^-to e^+e^-X$, with $X$ being either the $eta$ meson or $pi^0pi^0$, are studied at DA$Phi$NE, with $e^+e^-$ beams colliding at $sqrt{s}simeq1$ GeV, below the $phi$ resonance peak. The data sample is from an integrated luminosity of
240 pb$^{-1}$, collected by the KLOE experiment without tagging of the outgoing $e^+e^-$. Preliminary results are presented on the observation of the $gammagammatoeta$ process, with both $etatopi^+pi^-pi^0$ and $etatopi^0pi^0pi^0$ channels, and the evidence for $gammagammatopi^0pi^0$ production at low $pi^0pi^0$ invariant mass.
The KLOE experiment operating at the $phi$--factory DA$Phi$NE has collected an integrated luminosity of about 2.5 fb$^{-1}$ and 250 pb$^{-1}$, on and off the $phi$ meson peak respectively. Recent results achieved from studying properties of pseudoscalar and scalar mesons are presented.
We have measured the cross section $sigma(e^+e^-topi^+pi^-gamma(gamma))$ at DA$Phi$NE, the Frascati phi-factory, using events with initial state radiation photons emitted at small angle and inclusive of final state radiation. We present the analysis
of a new data set corresponding to an integrated luminosity of 240 pb$^{-1}$. We have achieved a reduced systematic uncertainty with respect to previously published KLOE results. From the cross section we obtain the pion form factor and the contribution to the muon magnetic anomaly from two pion states in the mass range $0.592 < M_{pipi} < 0.975$ GeV. For the latter we find $Delta a^{pipi}_mu = (387.2pm0.5_{rm stat}pm2.4_{rm exp}pm2.3_{rm th})times 10^{-10}$
The KLOE experiment at the DA$Phi$NE $phi$-factory has performed a new precise measurement of the pion form factor using Initial State Radiation events, with photons emitted at small polar angle. Results based on an integrated luminosity of 240 pb$^{
-1}$ and extraction of the $pipi$ contribution to $a_mu$ in the mass range [0.35,0.95] GeV$^2$ are presented, the systematic uncertainty is reduced with respect to the published KLOE result.
The KLOE Experiment at the $phi$ factory DA$Phi$NE, has measured the cross section $sigma(e^+e^-topi^+pi^-gamma)$ using two different selection schemes: 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 pion form factor and obtain the $pipi$ contribution to the anomalous magnetic moment of the muon. Results presented here come from the analysis of 240 pb^{-1} collected in 2002, with improved systematic uncertainty with respect to the published KLOE analysis. We also include an update of the previous analysis.
