Measurement of the e+e−→K+K−π+π− cross section with the CMD-3 detector at the VEPP-2000 collider

Measurement of the e+e−→K+K−π+π− cross section with the CMD-3 detector at the VEPP-2000 collider

The process e+e−→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 24 000 selected events, the e+e−→K+K−π+π− cross section has been measured with a systematic...

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Veröffentlicht in:Physics letters. B 2016-05, Vol.756 (C), p.153-160
Hauptverfasser: Shemyakin, D.N., Fedotovich, G.V., Akhmetshin, R.R., Amirkhanov, A.N., Anisenkov, A.V., Aulchenko, V.M., Banzarov, V.Sh, Bashtovoy, N.S., Bondar, A.E., Bragin, A.V., Eidelman, S.I., Epifanov, D.A., Epshteyn, L.B., Erofeev, A.L., Gayazov, S.E., Grebenuk, A.A., Gribanov, S.S., Grigoriev, D.N., Ignatov, F.V., Ivanov, V.L., Karpov, S.V., Kazanin, V.F., Koop, I.A., Korobov, A.A., Kovalenko, O.A., Kozyrev, A.N., Kozyrev, E.A., Krokovny, P.P., Kuzmenko, A.E., Kuzmin, A.S., Logashenko, I.B., Lysenko, A.P., Lukin, P.A., Mikhailov, K.Yu, Okhapkin, V.S., Pestov, Yu.N., Perevedentsev, E.A., Popov, A.S., Razuvaev, G.P., Rogovsky, Yu.A., Ruban, A.A., Ryskulov, N.M., Ryzhenenkov, A.E., Shebalin, V.E., Shwartz, B.A., Shwartz, D.B., Sibidanov, A.L., Shatunov, Yu.M., Solodov, E.P., Titov, V.M., Talyshev, A.A., Vorobiov, A.I., Yudin, Yu.V., Zemlyansky, I.M.
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Sprache:eng
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Zusammenfassung:The process e+e−→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 24 000 selected events, the e+e−→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.
ISSN:0370-2693
1873-2445
DOI:10.1016/j.physletb.2016.02.072