Study of the process $e^+e^-\to 3(\pi^+\pi^-)$ in the c.m.energy range 1.5--2.0 gev with the cmd-3 detector

A.A.Grebenuk; A.A.Ruban; A.A.Talyshev; A.E.Bondar; A.E.Kuzmenko; A.E.Ryzhenenkov; A.I.Vorobiov; A.L.Romanov; A.L.Sibidanov; A.N.Kozyrev

arxiv: 1302.0053 · v1 · pith:5FSNPWP3new · submitted 2013-02-01 · ✦ hep-ex

Study of the process e^+e^-to 3(π^+π^-) in the c.m.energy range 1.5--2.0 gev with the cmd-3 detector

CMD-3 Collaboration: R.R.Akhmetshin , A.V.Anisenkov , S.A.Anokhin , V.M.Aulchenko , V.S.Banzarov , L.M.Barkov , N.S.Bashtovoy , D.E.Berkaev

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A.E.Bondar A.V.Bragin S.I.Eidelman D.A.Epifanov L.B.Epshteyn G.V.Fedotovich S.E.Gayazov A.A.Grebenuk D.N.Grigoriev E.N.Gromov F.V.Ignatov S.V.Karpov V.F.Kazanin B.I.Khazin I.A.Koop A.N.Kozyrev P.P.Krokovny A.E.Kuzmenko A.S.Kuzmin I.B.Logashenko A.P.Lysenko P.A.Lukin K.Yu.Mikhailov Yu.N.Pestov E.A.Perevedentsev S.A.Pirogov S.G.Pivovarov A.S.Popov Yu.S.Popov S.I.Redin Yu.A.Rogovsky A.L.Romanov A.A.Ruban N.M.Ryskulov A.E.Ryzhenenkov V.E.Shebalin D.N.Shemyakin B.A.Shwartz D.B.Shwartz A.L.Sibidanov P.Yu.Shatunov Yu.M.Shatunov I.G.Snopkov E.P.Solodov V.M.Titov A.A.Talyshev A.I.Vorobiov Yu.V.Yudin A.S.Zaytsev

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keywords beencmd-3crossdetectorenergymeasuredprocessrange

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The cross section of the process $e^+e^- \to 3(\pi^+\pi^-)$ has been measured using 22 pb$^{-1}$ of integrated luminosity collected with the CMD-3 detector at the VEPP-2000 $e^+e^-$ collider in the c.m. energy range 1.5 -- 2.0 GeV. The measured cross section exhibits a sharp drop near the $p\bar p$ threshold. A first study of dynamics of six-pion production has been performed.

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