{"paper":{"title":"Search for the Decay $K^+ \\to \\pi^+ \\nu \\overline{\\nu}$","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ex","authors_text":"A. J. S. Smith (Princeton University) E. W. Blackmore, A. Konaka, A. Sambamurti, A. Stevens, A. S. Turcot (TRIUMF), C. Witzig (Brookhaven National Laboratory), D. A. Bryman, D. R. Marlow, F. C. Shoemaker, I-H. Chiang, J. A. Macdonald, J-M. Poutissou, J. Roy, J. S. Frank, J. S. Haggerty, K. K. Li, L. Felawka, Los Alamos National Laboratory) D. S. Akerib, L. S. Littenberg, M. Ardebili, M. A. Selen, M. M. Ito, M. R. Convery, M. S. Atiya, P. D. Meyers, P. Kitching, P. Padley, R. A. McPherson, R. C. Strand, R. Poutissou, R. Soluk, S. Adler, T. F. Kycia, T. Nakano, T. Numao, V. A. Kujala, W. C. Louis (Medium Energy Physics Division, Y. Kuno","submitted_at":"1995-10-18T22:38:55Z","abstract_excerpt":"An upper limit on the branching ratio for the decay $K^+ \\! \\rightarrow \\! \\pi^+ \\nu \\overline{\\nu}$ is set at $2.4 \\times 10^{-9}$ at the 90\\% C.L. using pions in the kinematic region $214~{\\rm MeV}/c < P_\\pi < 231~{\\rm MeV}/c$. An upper limit of $5.2 \\times 10^{-10}$ is found on the branching ratio for decays $K^+ \\! \\rightarrow \\! \\pi^+ X^0$, where $X^0$ is any massless, weakly interacting neutral particle. Limits are also set for cases where $M_{X^0}>0$."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ex/9510006","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/hep-ex/9510006/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"}