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arXiv · 1510.00654

Measurement of the $e^+e^- \to K^+K^-π^+π^-$ 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
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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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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. 2016-02-20. Measurement of the $e^+e^- \to K^+K^-π^+π^-$ cross section with the CMD-3 detector at the VEPP-2000 collider. https://doi.org/10.1016/j.physletb.2016.02.072

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