{"paper":{"title":"Measurement of $\\Gamma_{ee}(J/\\psi)$ with KEDR detector","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ex","authors_text":"A.A. Osipov, A.A. Ruban, A.A. Talyshev, A.E. Blinov, A.E. Bondar, A.G. Shamov, A.I. Vorobiov, A.K. Barladyan, A.L. Maslennikov, A.M. Sukharev, A.N. Skrinsky, A.N. Yushkov, A.N. Zhuravlev (KEDR Collaboration), A.O. Poluektov, A.P. Onuchin, A.R. Buzykaev, A.S. Medvedko, A.V. Bobrov, A.V. Bogomyagkov, A.V. Sokolov, A.Yu. Barnyakov, B.A. Shwartz, D.A. Maksimov, D.N. Shatilov, D.V. Bondarev, D.V. Gusev, E.A. Kravchenko, E.A. Kuper, E.A. Simonov, E.B. Levichev, E.M. Baldin, E.V. Starostina, G.A. Savinov, G.M. Tumaikin, G.V. Karpov, G.Ya. Kurkin, I.B. Nikolaev, I.I. Morozov, I.N. Okunev, I.N. Popkov, I.O. Orlov, I.V. Bedny, K.Yu. Kotov, K.Yu. Todyshev, M.Yu. Barnyakov, N.Yu. Muchnoi, O.I. Meshkov, O.L. Rezanova, P.A. Piminov, S.A. Kononov, S.A. Nikitin, S.B. Oreshkin, S.E. Baru, S.E. Karnaev, S.G. Pivovarov, S.I. Eidelman, S.I. Mishnev, S.V. Karpov, S.V. Peleganchuk, S.V. Sinyatkin, T.A. Kharlamova, V.A. Kiselev, V.A. Tayursky, V.E. Blinov, V.F. Kulikov, V.G. Prisekin, V.I. Telnov, V.K. Sandyrev, V.M. Aulchenko, V.M. Malyshev, V.N. Zhilich, V.S. Bobrovnikov, V.V. Anashin, V.V. Gulevich, V.V. Neufeld, V.V. Petrov, V.V. Smaluk, V.V. Zhulanov, Yu.A. Tikhonov, Yu.I. Skovpen, Yu.M. Glukhovchenko, Yu.V. Usov","submitted_at":"2018-01-06T03:26:20Z","abstract_excerpt":"The product of the electronic width of the $J/\\psi$ meson and the branching fractions of its decay to hadrons and electrons has been measured using the KEDR detector at the VEPP-4M $e^+e^-$ collider. The obtained values are: $\\Gamma_{ee}(J/\\psi) = 5.550 \\pm 0.056 \\pm 0.089 \\, \\text{keV}, $ $\\Gamma_{ee}(J/\\psi) \\cdot \\mathcal{B}_\\text{hadrons}(J/\\psi) = 4.884 \\pm 0.048 \\pm 0.078 \\, \\text{keV}, $ $\\Gamma_{ee}(J/\\psi) \\cdot \\mathcal{B}_{ee}(J/\\psi) = 0.3331 \\pm 0.0066 \\pm 0.0040 \\, \\text{keV}.$ The uncertainties shown are statistical and systematic, respectively. Using the result presented and th"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1801.01958","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}