{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:DXDHA7HGMD7H4N7SRF2XOSSURX","short_pith_number":"pith:DXDHA7HG","schema_version":"1.0","canonical_sha256":"1dc6707ce660fe7e37f28975774a548df24fcdcaac1ced21771c65b00cd04cd0","source":{"kind":"arxiv","id":"1810.09655","version":2},"attestation_state":"computed","paper":{"title":"Search for $K_L \\!\\to\\! \\pi^0 \\nu \\overline{\\nu}$ and $K_L \\!\\to\\! \\pi^0 X^0$ Decays at the J-PARC KOTO Experiment","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ex","authors_text":"A. S. Kurilin, B. Beckford, C. Lin, D. Mcfarland, D. Naito, E. J. Kim, G. Y. Lim, H. Haraguchi, H. Nanjo, H. Nishimiya, H. Okuno, H. Schamis, H. Watanabe, H. Y. Yoshida, I. Kamiji, J. Beechert, J. Comfort, J. K. Woo, J. L. Kim, J. Ma, J. Micallef, J. W. Ko, J. W. Lee, K. Bryant, K. Dona, K. Kotera, K. Miyazaki, K. Nakagiri, KOTO Collaboration: J. K. Ahn, K. Sato, K. Shiomi, M. Campbell, M. Hutcheson, M. Ohsugi, M. Sasaki, M. Taylor, M. Tecchio, M. Togawa, N. Hara, N. Kawasaki, N. McNeal, N. Sasao, N. Shimizu, Q. Lin, R. Murayama, S. H. Chen, S. Seki, S. Shinohara, S. Su, S. Suzuki, T. Inagaki, T. K. Komatsubara, T. Mari, T. Masuda, T. Matsumura, T. Nomura, T. Sato, T. Shimogawa, T. Shinkawa, T. Yamanaka, Y. B. Hsiung, Y. C. Tung, Y. J. Kim, Y. Luo, Y. Maeda, Y. Sato, Y. Sugiyama, Y. Tajima, Y. W. Wah","submitted_at":"2018-10-23T04:48:49Z","abstract_excerpt":"A search for the rare decay $K_L \\!\\to\\! \\pi^0 \\nu \\overline{\\nu}$ was performed. With the data collected in 2015, corresponding to $2.2 \\times 10^{19}$ protons on target, a single event sensitivity of $( 1.30 \\pm 0.01_{\\rm stat} \\pm 0.14_{\\rm syst} ) \\times 10^{-9}$ was achieved and no candidate events were observed. We set an upper limit of $3.0 \\times 10^{-9}$ for the branching fraction of $K_L \\!\\to\\! \\pi^0 \\nu \\overline{\\nu}$ at the 90% confidence level (C.L.), which improved the previous limit by almost an order of magnitude. An upper limit for $K_L \\!\\to\\! \\pi^0 X^0$ was also set as $2."},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1810.09655","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ex","submitted_at":"2018-10-23T04:48:49Z","cross_cats_sorted":[],"title_canon_sha256":"bbd4d8d5e07554ef31823a525372fb3261255ba3a6a07165516e4b22839043d7","abstract_canon_sha256":"f4fba3453219280fe08cc4ef98ebaa1d07edec4ae78e1bdc60c22a02f693a8fa"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:52:40.345302Z","signature_b64":"/PRVzQISO2r9/vv/uMnkTrcG4Hklp3wof6plfED5lTZ6GuUirP4yqKjgVL5hItzRToEM1FHrMi9Zic1pVkA4Cg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1dc6707ce660fe7e37f28975774a548df24fcdcaac1ced21771c65b00cd04cd0","last_reissued_at":"2026-05-17T23:52:40.344650Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:52:40.344650Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Search for $K_L \\!\\to\\! \\pi^0 \\nu \\overline{\\nu}$ and $K_L \\!\\to\\! \\pi^0 X^0$ Decays at the J-PARC KOTO Experiment","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ex","authors_text":"A. S. Kurilin, B. Beckford, C. Lin, D. Mcfarland, D. Naito, E. J. Kim, G. Y. Lim, H. Haraguchi, H. Nanjo, H. Nishimiya, H. Okuno, H. Schamis, H. Watanabe, H. Y. Yoshida, I. Kamiji, J. Beechert, J. Comfort, J. K. Woo, J. L. Kim, J. Ma, J. Micallef, J. W. Ko, J. W. Lee, K. Bryant, K. Dona, K. Kotera, K. Miyazaki, K. Nakagiri, KOTO Collaboration: J. K. Ahn, K. Sato, K. Shiomi, M. Campbell, M. Hutcheson, M. Ohsugi, M. Sasaki, M. Taylor, M. Tecchio, M. Togawa, N. Hara, N. Kawasaki, N. McNeal, N. Sasao, N. Shimizu, Q. Lin, R. Murayama, S. H. Chen, S. Seki, S. Shinohara, S. Su, S. Suzuki, T. Inagaki, T. K. Komatsubara, T. Mari, T. Masuda, T. Matsumura, T. Nomura, T. Sato, T. Shimogawa, T. Shinkawa, T. Yamanaka, Y. B. Hsiung, Y. C. Tung, Y. J. Kim, Y. Luo, Y. Maeda, Y. Sato, Y. Sugiyama, Y. Tajima, Y. W. Wah","submitted_at":"2018-10-23T04:48:49Z","abstract_excerpt":"A search for the rare decay $K_L \\!\\to\\! \\pi^0 \\nu \\overline{\\nu}$ was performed. With the data collected in 2015, corresponding to $2.2 \\times 10^{19}$ protons on target, a single event sensitivity of $( 1.30 \\pm 0.01_{\\rm stat} \\pm 0.14_{\\rm syst} ) \\times 10^{-9}$ was achieved and no candidate events were observed. We set an upper limit of $3.0 \\times 10^{-9}$ for the branching fraction of $K_L \\!\\to\\! \\pi^0 \\nu \\overline{\\nu}$ at the 90% confidence level (C.L.), which improved the previous limit by almost an order of magnitude. An upper limit for $K_L \\!\\to\\! \\pi^0 X^0$ was also set as $2."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1810.09655","kind":"arxiv","version":2},"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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1810.09655","created_at":"2026-05-17T23:52:40.344775+00:00"},{"alias_kind":"arxiv_version","alias_value":"1810.09655v2","created_at":"2026-05-17T23:52:40.344775+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1810.09655","created_at":"2026-05-17T23:52:40.344775+00:00"},{"alias_kind":"pith_short_12","alias_value":"DXDHA7HGMD7H","created_at":"2026-05-18T12:32:19.392346+00:00"},{"alias_kind":"pith_short_16","alias_value":"DXDHA7HGMD7H4N7S","created_at":"2026-05-18T12:32:19.392346+00:00"},{"alias_kind":"pith_short_8","alias_value":"DXDHA7HG","created_at":"2026-05-18T12:32:19.392346+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"2508.08402","citing_title":"Sweeping the pion chimney for axion-like particles with KOTO","ref_index":3,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/DXDHA7HGMD7H4N7SRF2XOSSURX","json":"https://pith.science/pith/DXDHA7HGMD7H4N7SRF2XOSSURX.json","graph_json":"https://pith.science/api/pith-number/DXDHA7HGMD7H4N7SRF2XOSSURX/graph.json","events_json":"https://pith.science/api/pith-number/DXDHA7HGMD7H4N7SRF2XOSSURX/events.json","paper":"https://pith.science/paper/DXDHA7HG"},"agent_actions":{"view_html":"https://pith.science/pith/DXDHA7HGMD7H4N7SRF2XOSSURX","download_json":"https://pith.science/pith/DXDHA7HGMD7H4N7SRF2XOSSURX.json","view_paper":"https://pith.science/paper/DXDHA7HG","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1810.09655&json=true","fetch_graph":"https://pith.science/api/pith-number/DXDHA7HGMD7H4N7SRF2XOSSURX/graph.json","fetch_events":"https://pith.science/api/pith-number/DXDHA7HGMD7H4N7SRF2XOSSURX/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/DXDHA7HGMD7H4N7SRF2XOSSURX/action/timestamp_anchor","attest_storage":"https://pith.science/pith/DXDHA7HGMD7H4N7SRF2XOSSURX/action/storage_attestation","attest_author":"https://pith.science/pith/DXDHA7HGMD7H4N7SRF2XOSSURX/action/author_attestation","sign_citation":"https://pith.science/pith/DXDHA7HGMD7H4N7SRF2XOSSURX/action/citation_signature","submit_replication":"https://pith.science/pith/DXDHA7HGMD7H4N7SRF2XOSSURX/action/replication_record"}},"created_at":"2026-05-17T23:52:40.344775+00:00","updated_at":"2026-05-17T23:52:40.344775+00:00"}