Study of the process $e^{+}{e}^{-}\to \ddot{I}‰\ddot{I}{€}^0\to \ddot{I}{€}^{+}\ddot{I}{€}^{-}\ddot{I}{€}^0\ddot{I}{€}^0$ in the energy range $1.05-2.00$ GeV with SND

Abstract

The process $e^{+}{e}^{-}\to \ddot{I}‰\ddot{I}{€}^0\to \ddot{I}{€}^{+}\ddot{I}{€}^{-}\ddot{I}{€}^0\ddot{I}{€}^0$ is studied in the center-of-mass energy region $1.05-2.00$ GeV using data with an integral luminosity of about 35 pb${}^{-1}$ collected with the SND detector at the VEPP-2000 $e^{+}{e}^{-}$ collider. In the energy range under study, the value of the measured Born cross section varies from 0.7 to 18 nb. The statistical uncertainty of the cross section is $2-23$%, while the systematic uncertainty is in the range of $3.0-14.2$%. The results are consistent with previous measurements but have better accuracy.

13 pages, 11 figures