{"paper":{"title":"Measurement of K^+ \\to \\pi^0 \\mu^+ \\nu \\gamma decay using stopped kaons","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ex","authors_text":"A.N. Khotjantsev, A.P. Ivashkin, A.S. Levchenko, C. Rangacharyulu, G.Y. Lim, J.A. Macdonald, J. Imazato, KEK-E470 Collaboration: S. Shimizu, K. Horie, M.A. Aliev, M. Hasinoff, M.M. Khabibullin, O.V. Mineev, P. Depommier, S. Sawada, T. Baker, Y. Asano, Y.G. Kudenko, Y. Igarashi","submitted_at":"2005-12-26T02:16:48Z","abstract_excerpt":"The K^+ \\to \\pi^0 \\mu^+ \\nu \\gamma ($K_{\\mu 3 \\gamma}$) decay has been measured with stopped positive kaons at the KEK 12 GeV proton synchrotron. A $K_{\\mu 3 \\gamma}$ sample containing 125 events was obtained. The partial branching ratio $Br(K_{\\mu 3 \\gamma}, E_{\\gamma}>30 {\\rm MeV}, \\theta_{\\mu^+ \\gamma}>20^{\\circ})$ was found to be $[2.4 \\pm 0.5(stat) \\pm 0.6(syst)]\\times 10^{-5}$, which is in good agreement with theoretical predictions."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ex/0512068","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"}