Final analysis of KEDR data on<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si1.gif" overflow="scroll"><mml:mi>J</mml:mi><mml:mo stretchy="false">/</mml:mo><mml:mi>ψ</mml:mi></mml:math>and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si101.gif" overflow="scroll"><mml:mi>ψ</mml:mi><mml:mo stretchy="false">(</mml:mo><mml:mn>2</mml:mn><mml:mi>S</mml:mi><mml:mo stretchy="false">)</mml:mo></mml:math>masses
В.В. Анашин(Budker Institute of Nuclear Physics), V.M. Aulchenko(Novosibirsk State University), E. M. Baldin(Budker Institute of Nuclear Physics), A.K. Barladyan(Budker Institute of Nuclear Physics), A. Barnyakov(Novosibirsk State University), M.Yu. Barnyakov(Budker Institute of Nuclear Physics), S.E. Baru(Novosibirsk State University), I.Yu. Basok(Budker Institute of Nuclear Physics), A. M. Batrakov(Budker Institute of Nuclear Physics), A. E. Blinov(Budker Institute of Nuclear Physics), V. E. Blinov(Budker Institute of Nuclear Physics), A.V. Bobrov(Budker Institute of Nuclear Physics), V. S. Bobrovnikov(Budker Institute of Nuclear Physics), A. Bogomyagkov(Budker Institute of Nuclear Physics), A. Bondar(Budker Institute of Nuclear Physics), A.A. Borodenko(Budker Institute of Nuclear Physics), А. Р. Бузыкаев(Budker Institute of Nuclear Physics), S.I. Eidelman(Novosibirsk State University), D. N. Grigoriev(Budker Institute of Nuclear Physics), Yu.M. Glukhovchenko(Budker Institute of Nuclear Physics), S.E. Karnaev(Budker Institute of Nuclear Physics), Г. В. Карпов, С. Карпов, T. Kharlamova, В. А. Киселев(Budker Institute of Nuclear Physics), V. V. Kolmogorov(Budker Institute of Nuclear Physics), S.A. Kononov, Khristian Kotov, Е. А. Кравченко, V. Kudryavtsev(Novosibirsk State University), V. Kulikov, G.Ya. Kurkin, I. A. Kuyanov, E.A. Kuper, E. Levichev(Novosibirsk State University), D.A. Maksimov(Novosibirsk State University), В. М. Малышев(Novosibirsk State University), A. L. Maslennikov(Budker Institute of Nuclear Physics), О. И. Мешков, S. I. Mishnev(Budker Institute of Nuclear Physics), И. И. Морозов, N. Yu. Muchnoi, V.V. Neufeld(Budker Institute of Nuclear Physics), S. A. Nikitin, I. B. Nikolaev, I.N. Okunev(Novosibirsk State University), A. P. Onuchin, S.B. Oreshkin(Budker Institute of Nuclear Physics), A. A. Osipov(Budker Institute of Nuclear Physics), I. Ovtin, S. V. Peleganchuk, S.G. Pivovarov, P. Piminov, Vladimir Petrov(Budker Institute of Nuclear Physics), V.G. Prisekin, O. L. Rezanova, A.A. Ruban(Budker Institute of Nuclear Physics), V.K. Sandyrev, G.A. Savinov, A.G. Shamov(Budker Institute of Nuclear Physics), D. Shatilov(Novosibirsk State University), B. Shwartz(Budker Institute of Nuclear Physics), E.A. Simonov, S. V. Sinyatkin, A.N. Skrinsky, A. Sokolov(Novosibirsk State University), A.M. Sukharev(Budker Institute of Nuclear Physics), Е. В. Старостина(Novosibirsk State University), A.A. Talyshev(Budker Institute of Nuclear Physics), V.A. Tayursky(Budker Institute of Nuclear Physics), V. I. Telnov, Yu. A. Tikhonov, K. Yu. Todyshev, G.M. Tumaikin, Y. Usov, A.I. Vorobiov, V. Zhilich(Novosibirsk State University), V.V. Zhulanov(Budker Institute of Nuclear Physics), А. Н. Журавлев
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Abstract
We present the analysis of all KEDR data on the determination of J/ψ and ψ(2S) masses. The data comprise six scans of J/ψ and seven scans of ψ(2S) which were performed at the VEPP-4M e+e− collider in 2002–2008. The beam energy was determined using the resonance depolarization method. The detector and accelerator conditions during scans were very different that increases the reliability of the averaged results. The analysis accounts for partial correlations of systematic uncertainties on the masses. The following mass values were obtained:MJ/ψ=3096.900±0.002±0.006 MeV,Mψ(2S)=3686.099±0.004±0.009 MeV. These results supersede our previous measurements published in 2003 and 2012.
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