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We describe the status of the analyses in progress on light meson spectroscopy in the KLOE experiment. We present the analyses of phi decays into f0(980)gamma and a0(980)gamma, the Dalitz plot analysis of the eta to pie+ pie- pie0 decay, the branching ratio measurement of eta to pie0 gamma gamma, the upper limits on Br(eta to 3 gamma) and Br(eta to pie^+ pie^-), the measurement of the ratio Br(phi to eta gamma)/Br(phi to eta gamma) and phi leptonic width measurements.
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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.
A review of the recent results obtained by the KLOE experiment at DAFNE concerning the physics of low mass mesons is presented.
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.
We present a measurement of the KL lifetime using the KLOE detector. From a sample of 4 x 10^8 KS KL pairs following the reaction e+ e- -> phi -> KS KL we select 15 x 10^6 KL -> p0 p0 p0 decays tagged by KS -> pi+ pi- events. From a fit of the proper time distribution we find tau_L = (50.92 +- 0.17{stat} +- 0.25{syst})$ ns. This is the most precise measurement of the KL lifetime performed to date.
Working at a $phi$-factory, KLOE/KLOE-2 has collected a very large and clean sample of $eta$ decays, which allow to perform a variety of precision measurements. This report presents the recent results on the $eta$-meson decays from KLOE/KLOE-2 experiments, including the search of the $C$-violating decay $etarightarrowgammagammagamma$, the determination of the $CP$ asymmetry in $etarightarrowpi^+pi^-e^+e^-$, the precision measurement of the $etarightarrowpi^+pi^-pi^0$ Dalitz plot distribution, the search for the $CP$-violating decay $etarightarrowpi^+pi^-$ and the precision measurement of ${cal O}(p^6)$ dominated decay $etarightarrowgammagammapi^0$.
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