{"paper":{"title":"Search for the process $e^+e^-\\to \\eta^\\prime(958)$ with the CMD-3 detector","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ex","authors_text":"A.A.Grebenuk, A.A.Ruban, A.A.Talyshev, A.E.Bondar, A.E.Kuzmenko, A.E.Ryzhenenkov, A.I.Vorobiov, A.L.Erofeev, A.L.Romanov, A.L.Sibidanov, A.N.Kozyrev, A.S.Kuzmin, A.S.Popov, A.V.Anisenkov, A.V.Bragin, B.A.Shwartz, B.I.Khazin, D.A.Epifanov, D.B.Shwartz, D.E.Berkaeva, D.N.Grigoriev, D.N.Shemyakin, E.A.Kozyrev, E.A.Perevedentsev, E.N.Gromov, E.P.Solodov, F.V.Ignatov, G.P.Razuvaev, G.V.Fedotovich, I.A.Koop, I.B.Logashenko, K.Yu.Mikhailov, L.B.Epshteyn, N.M.Ryskulov, N.S.Bashtovoy, N.Yu.Muchnoi, O.A.Kovalenko, P.A.Lukin, P.P.Krokovny, P.Yu.Shatunov, R.R.Akhmetshin, S.E.Gayazov, S.I.Eidelman, S.V.Karpov, V.E.Shebalin, V.F.Kazanin, V.M.Aulchenko, V.M.Titova, V.Sh.Banzarov, V.S.Okhapkin, Yu.A.Rogovsky, Yu.M.Shatunov, Yu.N.Pestov, Yu.V.Yudin","submitted_at":"2014-09-05T06:10:12Z","abstract_excerpt":"A search for the process $\\epem\\to \\eta^\\prime(958)$ in the $\\pipi\\eta\\to\\pipi\\gamma\\gamma$ final state has been performed with the CMD-3 detector at the VEPP-2000 $e^+e^-$ collider. Using an integrated luminosity of 2.69 pb$^{-1}$ collected at the center-of-mass energy \\Ecm = 957.68 MeV we set an upper limit for the product of electronic width and branching fractions $\\Gamma_{\\eta^\\prime(958)\\to\\epem}\\cdot\\BR_{\\eta^\\prime(958)\\to\\pipi\\eta}\\cdot\\BR_{\\eta\\to\\gamma\\gamma}<0.00041$ eV at 90\\% C.L."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1409.1664","kind":"arxiv","version":3},"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"}