The $\ddot{I}•(1020)\to \ddot{I}{€}^0\ddot{I}{€}^0{\hat{I}}^3$ decay

Abstract

In the SND experiment at VEPP-2M $e^{+}{e}^{-}$ collider the $\ddot{I}•(1020)\to \ddot{I}{€}^0\ddot{I}{€}^0{\hat{I}}^3$ decay was studied and its branching ratio was measured: $B(\ddot{I}•\to \ddot{I}{€}^0\ddot{I}{€}^0{\hat{I}}^3)=(1.221\pm 0.098\pm 0.061)\cdot 10^{-4}$. It was shown, that $f_0(980){\hat{I}}^3$ intermediate state dominates in this decay and the $f_0(980)$-meson parameters were obtained.

15 pages, 5 figure, 4 table, Submitted to Phys. Lett. B