{"paper":{"title":"Measurement of structure dependent radiative $K^{+} \\rightarrow e^{+} \\nu \\gamma$ decays using stopped positive kaons","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ex","authors_text":"A. Kobayashi, A. Toyoda, C. Djalali, D. Gill, D.H. Dongwi, H. Ito, H. Kawai, H. Lu, H. Yamazaki, J. Imazato, K. Horie, M. D. Hasinoff, M. Kohl, M. Tabata, N. Kalantarians, N. Yershov, O. Mineev, P. Monaghan, R. Tanuma, S. Bianchin, S. Kimura, S. Kodama, S. Shimizu, S. Strauch, T. Cao, T. Gautam, Y. Igarashi","submitted_at":"2021-07-08T03:37:21Z","abstract_excerpt":"The structure dependent radiative $K^+ \\rightarrow e^+ \\nu \\gamma$ ($K_{e2\\gamma}^{\\rm SD^+}$) decay was investigated with stopped positive kaons. The $e^+$ momentum spectra containing 574$\\pm$30 $K_{e2\\gamma}^{\\rm SD^+}$ events with a $K^+ \\rightarrow \\mu^+ \\nu$ ($K_{\\mu2}$) background of 28$\\pm$19 events were measured with and without a photon in coincidence and analyzed with Monte Carlo simulations for acceptance and detector response to extract the ratio of the branching ratio of the $K_{e2\\gamma}^{\\rm SD^+}$ decay and the $K^+ \\rightarrow e^+ \\nu$ decay including the internal bremsstrahlu"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2107.03583","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2107.03583/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"}