{"paper":{"title":"Study of the decay $K^{+}\\to\\pi^{+}\\pi^{-}\\pi^{+}\\gamma$ in the OKA experiment","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ex","authors_text":"A.A. Khudyakov, A.M. Blik, A.M. Gorin, A.P. Filin, A.S. Konstantinov, A.S. Sadovsky, A.V. Artamonov, A.V. Inyakin, A.V. Popov, A.Yu. Polyarush, B.Zh. Zalikhanov, E.N. Guschin, G.D. Kekelidze, G.V. Khaustov, M.M. Shapkin, M.V. Medynsky, O.G. Tchikilev, O.P. Yushchenko, O.V. Stenyakin, S.A. Akimenko, S.A. Kholodenko, S.N. Filippov, S.V. Donskov, V.A. Duk, V.A. Lishin, V.A. Polyakov, V.A. Uvarov, V.D. Samoilenko, V.F. Kurshetsov, V.F. Obraztsov, V.I. Kravtsov, V.I. Romanovsky, V.I. Rykalin, V.K. Semenov, V.M. Lysan, V.N. Bychkov, V.N. Kolosov, V.S. Burtovoy, Yu.G. Kudenko, Yu.V. Mikhailov","submitted_at":"2018-08-28T08:52:19Z","abstract_excerpt":"A high statistics data sample of the decays of $K^+$ mesons to three charged particles was accumulated by the OKA experiment in 2012 and 2013. This allowed to select a clean sample of about 450 events with $K^{+}\\to\\pi^{+}\\pi^{-}\\pi^{+}\\gamma$ decays with the energy of the photon in the kaon rest frame greater than 30 MeV. The measured branching fraction of the $K^{+}\\to\\pi^{+}\\pi^{-}\\pi^{+}\\gamma$, with $E_{\\gamma}^{*}$ > 30 MeV is $(0.71 \\pm 0.05) \\times 10^{-5}$. The measured energy spectrum of the decay photon is compared with the prediction of the chiral perturbation theory to O$(p^{4})$."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1808.09176","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"}