{"paper":{"title":"First observation of the decay K+ -> e+ nu mu+ mu-","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ex","authors_text":"A.A. Poblaguev, A. Sher, B. Bassalleck, D.E. Kraus, D.M. Lazarus, D.R. Bergman, G.S. Atoyan, H. Do, H. Kaspar, H.Ma, J.A. Thompson, J. Egger, J. Lowe, J. Lozano, M.E. Zeller (E865 collaboration), N. Cheung, P. Lichard, P. Rehak, P. Truoel, R. Appel, S. Dhawan, S. Eilerts, S. Pislak, V.V. Issakov, W. Herold, W. Majid","submitted_at":"2005-05-06T20:05:42Z","abstract_excerpt":"Experiment 865 at the Brookhaven AGS has observed the decay K^+ -> e^+ nu mu^+ mu^-. The branching ratio extracted is (1.72 +/- 0.37(stat) +/- 0.17(syst) +/- 0.19(model)) x 10^{-8} where the third term in the error results from the use of a model to extrapolate into a kinematic region dominated by background."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ex/0505011","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/hep-ex/0505011/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"}