Measurement of the $e^{+}{e}^{-}\to K^{+}{K}^{-}{\pi }^{+}{\pi }^{-}$ cross section with the CMD-3 detector at the VEPP-2000 collider

Abstract

The process $e^{+}{e}^{-}\to K^{+}{K}^{-}{\pi }^{+}{\pi }^{-}$ has been studied in the center-of-mass energy range from 1500 to 2000\,MeV using a data sample of 23 pb${}^{-1}$ collected with the CMD-3 detector at the VEPP-2000 $e^{+}{e}^{-}$ collider. Using about 24000 selected events, the $e^{+}{e}^{-}\to K^{+}{K}^{-}{\pi }^{+}{\pi }^{-}$ cross section has been measured with a systematic uncertainty decreasing from 11.7\% at 1500-1600\,MeV to 6.1\% above 1800\,MeV. A preliminary study of $K^{+}{K}^{-}{\pi }^{+}{\pi }^{-}$ production dynamics has been performed.

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