Study of the $\ddot{I}$, $\ddot{I}‰$, $\ddot{I}•\to \hat{I}\cdot {\hat{I}}^3\to 7{\hat{I}}^3$ Decays with an SND Detector on a VEPP-2M Collider

Abstract

The $e^{+}{e}^{-}\to \hat{I}\cdot {\hat{I}}^3\to 7{\hat{I}}^3$ process was studied in the energy range $2E=600\tilde{A}\cdot 1060$ MeV with an SND detector on a VEPP-2M $e^{+}{e}^{-}$ collider. The decay branching ratios $B(\ddot{I}•\to \hat{I}\cdot {\hat{I}}^3)=(1.343\pm 0.012\pm 0.055)\cdot 10^{-2}$, $B(\ddot{I}‰\to \hat{I}\cdot {\hat{I}}^3)=(4.60\pm 0.72\pm 0.19)\cdot 10^{-4}$, and $B(\ddot{I}\to \hat{I}\cdot {\hat{I}}^3)=(2.69\pm 0.32\pm 0.16)\cdot 10^{-4}$ were measured.

5 pages, 4 figures