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  • Measurement of Ruds and R b...
    Anashin, V.V.; Aulchenko, V.M.; Baldin, E.M.; Barladyan, A.K.; Barnyakov, A.Yu; Barnyakov, M.Yu; Baru, S.E.; Basok, I.Yu; Batrakov, A.M.; Blinov, A.E.; Blinov, V.E.; Bobrov, A.V.; Bobrovnikov, V.S.; Bogomyagkov, A.V.; Bondar, A.E.; Borodenko, A.A.; Buzykaev, A.R.; Eidelman, S.I.; Grigoriev, D.N.; Glukhovchenko, Yu.M.; Karnaev, S.E.; Karpov, G.V.; Karpov, S.V.; Kasyanenko, P.V.; Kharlamova, T.A.; Kiselev, V.A.; Kolmogorov, V.V.; Kononov, S.A.; Kotov, K.Yu; Kravchenko, E.A.; Kudryavtsev, V.N.; Kulikov, V.F.; Kurkin, G.Ya; Kuyanov, I.A.; Kuper, E.A.; Levichev, E.B.; Maksimov, D.A.; Malyshev, V.M.; Maslennikov, A.L.; Meshkov, O.I.; Mishnev, S.I.; Morozov, I.I.; Muchnoi, N.Yu; Neufeld, V.V.; Nikitin, S.A.; Nikolaev, I.B.; Okunev, I.N.; Onuchin, A.P.; Oreshkin, S.B.; Osipov, A.A.; Ovtin, I.V.; Peleganchuk, S.V.; Petrov, V.V.; Pivovarov, S.G.; Piminov, P.A.; Prisekin, V.G.; Rezanova, O.L.; Ruban, A.A.; Sandyrev, V.K.; Savinov, G.A.; Shamov, A.G.; Shatilov, D.N.; Shwartz, B.A.; Simonov, E.A.; Sinyatkin, S.V.; Skrinsky, A.N.; Sokolov, A.V.; Sukharev, A.M.; Starostina, E.V.; Talyshev, A.A.; Tayursky, V.A.; Telnov, V.I.; Tikhonov, Yu.A.; Todyshev, K.Yu; Tumaikin, G.M.; Usov, Yu.V.; Vorobiov, A.I.; Zhilich, V.N.; Zhulanov, V.V.; Zhuravlev, A.N.

    Physics letters. B, 02/2016, Volume: 753, Issue: C
    Journal Article

    Using the KEDR detector at the VEPP-4M e+e− collider, we have measured the values of Ruds and R at seven points of the center-of-mass energy between 3.12 and 3.72 GeV. The total achieved accuracy is about or better than 3.3% at most of energy points with a systematic uncertainty of about 2.1%. At the moment it is the most accurate measurement of R(s) in this energy range.