{"paper":{"title":"Study of the process $e^+e^- \\to \\eta\\eta\\gamma$ in the energy range $\\sqrt{s} = \\mbox{1.17--2.00}$ GeV with the SND detector","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ex","authors_text":"A.A. Botov, A.A. Korol, A.E. Obrazovsky, A.G. Bogdanchikov, A.G. Kharlamov, A.I. Senchenko, A.N. Kirpotin, A.S. Kasaev, A.S. Kupich, A.V. Berdyugin, A.Yu. Barnyakov, D.A. Shtol, D.B.Shwartz, D.E. Berkaev, D.N. Shatilov, D.P. Kovrizhin, D.V. Rabusov, E.V. Pakhtusova, I.A. Koop, I.K. Surin, K.A. Martin, K.I.Beloborodov, K.V. Pugachev, L.V. Kardapoltsev, M.V. Timoshenko, N.A. Melnikova, N.Yu. Muchnoy, S.I. Serednyakov, SND Collaboration: M.N. Achasov, T.V. Dimova, V.N. Zhabin, V.P. Druzhinin, V.V. Zhulanov, Yu.A. Rogovsky, Yu.M. Shatunov, Yu.V. Usov, Z.K. Silagadze","submitted_at":"2021-10-12T09:21:24Z","abstract_excerpt":"The process $e^+e^-\\to\\eta\\eta\\gamma$ is studied in the center-of-mass energy range 1.17-2.00 GeV using data with an integrated luminosity of 201 pb$^{-1}$collected by the SND detector at the VEPP-2000 $e^+e^-$ collider. The $e^+e^-\\to\\eta\\eta\\gamma$ cross section is measured for the first time. It is shown that the dominant mechanism of this reaction is the transition through the $\\phi\\eta$ intermediate state. Our result on the $e^+e^-\\to\\eta\\eta\\gamma$ cross section is consistent with the $e^+e^-\\to\\phi\\eta$ measurement in the $\\phi\\to K^+ K^-$ mode. The search for radiative processes contri"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2110.05845","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2110.05845/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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"}