{"paper":{"title":"First Physical Results from SND Detector at VEPP-2M","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ex","authors_text":"A.A.Korol, A.A.Mamutkin, A.A.Polunin, A.A.Salnikov, A.A.Valishev, A.D.Bukin, A.N.Skrinsky, A.P.Lysenko, A.V.Berdyugin, A.V.Bozhenok, A.V.Savchkov, A.V.Varganov, A.V.Vasiljev, D.A.Bukin, E.A.Perevedentsev, E.E.Pyata, E.G.Pozdeev, E.V.Pakhtusova, I.A.Gaponenko, I.A.Koop, I.N.Nesterenko, K.I.Beloborodov, M.G.Bek, M.N.Achasov, M.S.Dubrovin, M.S.Korostelev, P.I.Ivanov, S.I.Dolinsky, S.I.Serednyakov, S.V.Burdin, S.V.Koshuba, T.V.Dimova, V.A.Sidorov, V.B.Golubev, V.I.Ptitsyn, V.N.Ivanchenko, V.P.Druzhinin, V.V.Danilov, V.V.Shary, Yu.M.Shatunov, Yu.S.Velikzhanin, Yu.V.Usov, Z.K.Silagadze","submitted_at":"1997-10-21T10:13:53Z","abstract_excerpt":"The paper describes experiments with the SND detector at VEPP-2M collider, carried out during the period from October 1995 until June 1997. The total integrated luminosity of 6.4 pb^{-1} was collected in the energy range 2E=0.4-1.4 GeV (MHAD97 experiment), corresponding to 4*10^5 mu^+ mu^- pairs produced. Preliminary results of the 1996 phi-meson experiment (FI96) are presented. The total number of phi-mesons produced is 4*10^6. New data on rare decays of phi and eta (550) mesons, in particular\n B(phi -> eta gamma) = (1.30+-0.06+-0.07)%,\n B(phi -> pi^0 pi^0 gamma) = (1.1+-0.2)*10^{-4}, (M_{pi^"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ex/9710017","kind":"arxiv","version":2},"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"}