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arxiv: 1610.02827 · v2 · pith:4YDEJAS6new · submitted 2016-10-10 · ✦ hep-ex

Measurement of R between 1.84 and 3.05 GeV at the KEDR detector

V.V. Anashin , V.M. Aulchenko , E.M. Baldin , A.K. Barladyan , A.Yu. Barnyakov , M.Yu. Barnyakov , S.E. Baru , I.Yu. Basok
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A.M. Batrakov A.E. Blinov V.E. Blinov A.V. Bobrov V.S. Bobrovnikov A.V. Bogomyagkov A.E. Bondar A.R. Buzykaev S.I. Eidelman D.N. Grigoriev Yu.M. Glukhovchenko S.E. Karnaev G.V. Karpov S.V. Karpov P.V. Kasyanenko T.A. Kharlamova V.A. Kiselev V.V. Kolmogorov S.A. Kononov K.Yu. Kotov E.A. Kravchenko V.N. Kudryavtsev V.F. Kulikov G.Ya. Kurkin I.A. Kuyanov E.B. Levichev D.A. Maksimov V.M. Malyshev A.L. Maslennikov O.I. Meshkov S.I. Mishnev I.I. Morozov N.Yu. Muchnoi V.V. Neufeld S.A. Nikitin I.B. Nikolaev I.N. Okunev A.P. Onuchin S.B. Oreshkin A.A. Osipov I.V. Ovtin S.V. Peleganchuk S.G. Pivovarov P.A. Piminov V.V. Petrov V.G. Prisekin O.L. Rezanova A.A. Ruban V.K. Sandyrev G.A. Savinov A.G. Shamov D.N. Shatilov B.A. Shwartz E.A. Simonov S.V. Sinyatkin A.N. Skrinsky A.V. Sokolov A.M. Sukharev E.V. Starostina A.A. Talyshev V.A. Tayursky V.I. Telnov Yu.A. Tikhonov K.Yu. Todyshev G.M. Tumaikin Yu.V. Usov A.I. Vorobiov V.N. Zhilich V.V. Zhulanov A.N. Zhuravlev
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keywords detectorenergykedrpointsaccuracyachievedbettercenter-of-mass
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Using the KEDR detector at the VEPP-4M $e^+e^-$ collider, we have determined the values of $R$ at thirteen points of the center-of-mass energy between 1.84 and 3.05 GeV. The achieved accuracy is about or better than $3.9\%$ at most of the energy points with a systematic uncertainty less than $2.4\%$.

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