Measurement of the $\ddot{I}•$ meson parameters with CMD-2 detector at VEPP-2M Collider

Abstract

About 300 000 $e^{+}{e}^{-}\to \ddot{I}•\to K_L^0{K}_S^0$ events in the center of mass energy range from 984 to 1040 MeV were used for the measurement of the $\ddot{I}•$ meson parameters. The following results have been obtained: $\ddot{I}{ƒ}_0=(1367\pm 15\pm 21)nb,m_{\ddot{I}}•=(1019.504\pm 0.011\pm 0.033)MeV/c^2,\hat{I}{“}_{\ddot{I}}•=(4.477\pm 0.036\pm 0.022)MeV,\hat{I}{“}_{e^{+}{e}^{-}}\cdot B(\ddot{I}•\to K_L^0{K}_S^0)=(4.364\pm 0.048\pm 0.065)\cdot 10^{-4}$ MeV.

13 pages, 5 figures, 5 tables