Study of the process $e^{+}{e}^{-}\to 3(\ddot{I}{€}^{+}\ddot{I}{€}^{-})$ in the c.m.energy range 1.5--2.0 gev with the cmd-3 detector

Abstract

The cross section of the process $e^{+}{e}^{-}\to 3(\ddot{I}{€}^{+}\ddot{I}{€}^{-})$ has been measured using 22 pb${}^{-1}$ of integrated luminosity collected with the CMD-3 detector at the VEPP-2000 $e^{+}{e}^{-}$ collider in the c.m. energy range 1.5 -- 2.0 GeV. The measured cross section exhibits a sharp drop near the $p\bar{p}$ threshold. A first study of dynamics of six-pion production has been performed.