${\hat{I}}^3{\hat{I}}^3$ physics with the KLOE experiment

Abstract

The processes $e^{+}{e}^{-}\to e^{+}{e}^{-}X$, with $X$ being either the $\hat{I}\cdot$ meson or $\ddot{I}{€}^0\ddot{I}{€}^0$, are studied at DA$\hat{I}¦$NE, with $e^{+}{e}^{-}$ beams colliding at $\sqrt{s}\simeq 1$ GeV, below the $\ddot{I}•$ 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 ${\hat{I}}^3{\hat{I}}^3\to \hat{I}\cdot$ process, with both $\hat{I}\cdot \to \ddot{I}{€}^{+}\ddot{I}{€}^{-}\ddot{I}{€}^0$ and $\hat{I}\cdot \to \ddot{I}{€}^0\ddot{I}{€}^0\ddot{I}{€}^0$ channels, and the evidence for ${\hat{I}}^3{\hat{I}}^3\to \ddot{I}{€}^0\ddot{I}{€}^0$ production at low $\ddot{I}{€}^0\ddot{I}{€}^0$ invariant mass.

Contributed paper to the Lepton-Photon 2011 Conference