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arxiv hep-ex/0610016 v2 pith:SABWJ5CY submitted 2006-10-06 hep-ex

Measurement of the e+e- -> pi+pi- cross section with the CMD-2 detector in the 370-520 MeV c.m. energy range

R.R.Akhmetshin , V.M.Aulchenko , V.Sh.Banzarov , L.M.Barkov , N.S.Bashtovoy , A.E.Bondar , D.V.Bondarev , A.V.Bragin
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S.K.Dhawan S.I.Eidelman D.A.Epifanov G.V.Fedotovich N.I.Gabyshev D.A.Gorbachev A.A.Grebenuk D.N.Grigoriev V.W.Hughes F.V.Ignatov S.V.Karpov V.F.Kazanin B.I.Khazin I.A.Koop P.P.Krokovny A.S.Kuzmin I.B.Logashenko P.A.Lukin A.P.Lysenko K.Yu.Mikhailov A.I.Milshtein I.N.Nesterenko M.A.Nikulin V.S.Okhapkin A.V.Otboev E.A.Perevedentsev A.S.Popov S.I.Redin B.L.Roberts N.I.Root A.A.Ruban N.M.Ryskulov A.G.Shamov Yu.M.Shatunov B.A.Shwartz A.L.Sibidanov V.A.Sidorov A.N.Skrinsky V.P.Smakhtin I.G.Snopkov E.P.Solodov J.A.Thompson Yu.V.Yudin A.S.Zaitsev S.G.Zverev
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classification hep-ex
keywords cmd-2crosssectiondetectorenergymeasurementpionrange
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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The cross section of the process e+e- -> pi+pi- has been measured at the CMD-2 detector in the 370-520 MeV center-of-mass (c.m.) energy range. A systematic uncertainty of the measurement is 0.7 %. Using all CMD-2 data on the pion form factor, the pion electromagnetic radius was calculated. The cross section of muon pair production was also determined.

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