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

Published 2 Oct 2015 in hep-ex and nucl-ex | (1510.00654v3)

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.