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

D.N. Shemyakin; G.V. Fedotovich; R.R. Akhmetshin; A.N. Amirkhanov,; A.V. Anisenkov; V.M. Aulchenko; V.Sh. Banzarov; N.S. Bashtovoy; A.E. Bondar,; A.V. Bragin; S.I. Eidelman; D.A. Epifanov; L.B. Epshteyn; A.L. Erofeev; S.E.; Gayazov; A.A. Grebenuk; S.S. Gribanov; D.N. Grigoriev; F.V. Ignatov; V.L.; Ivanov; S.V. Karpov; V.F. Kazanin; I.A. Koop; A.A. Korobov; O.A. Kovalenko,; A.N. Kozyrev; E.A. Kozyrev; P.P. Krokovny; A.E. Kuzmenko; A.S. Kuzmin; I.B.; Logashenko; A.P. Lysenko; P.A. Lukin; K.Yu. Mikhailov; V.S. Okhapkin; Yu.N.; Pestov; E.A. Perevedentsev; A.S. Popov; G.P. Razuvaev; Yu.A. Rogovsky; A.A.; Ruban; N.M. Ryskulov; A.E. Ryzhenenkov; V.E. Shebalin; B.A. Shwartz; D.B.; Shwartz; A.L. Sibidanov; Yu.M. Shatunov; E.P. Solodov; V.M. Titov; A.A.; Talyshev; A.I. Vorobiov; Yu.V. Yudin; I.M. Zemlyansky

arXiv:1510.00654·hep-ex·March 9, 2016

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

D.N. Shemyakin, G.V. Fedotovich, R.R. Akhmetshin, A.N. Amirkhanov,, A.V. Anisenkov, V.M. Aulchenko, V.Sh. Banzarov, N.S. Bashtovoy, A.E. Bondar,, A.V. Bragin, S.I. Eidelman, D.A. Epifanov, L.B. Epshteyn, A.L. Erofeev, S.E., Gayazov, A.A. Grebenuk, S.S. Gribanov, D.N. Grigoriev

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TL;DR

This paper reports the measurement of the cross section for the process $e^+e^- o K^+K^- ho^+ ho^-$ in the energy range 1500-2000 MeV using the CMD-3 detector, providing precise data and initial insights into production dynamics.

Contribution

First measurement of the $e^+e^- o K^+K^- ho^+ ho^-$ cross section in the 1500-2000 MeV range with detailed systematic analysis.

Findings

01

Cross section measured with decreasing systematic uncertainty from 11.7% to 6.1%.

02

Approximately 24,000 events analyzed for the process.

03

Initial study of production dynamics conducted.

Abstract

The process $e^{+} e^{-} \to K^{+} K^{-} π^{+} π^{-}$ 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 $e^{+} e^{-} \to K^{+} K^{-} π^{+} π^{-}$ 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 $K^{+} K^{-} π^{+} π^{-}$ production dynamics has been performed.

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