{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2011:JV6LHCFII3WYQHQI6Z5NNQDI3S","short_pith_number":"pith:JV6LHCFI","schema_version":"1.0","canonical_sha256":"4d7cb388a846ed881e08f67ad6c068dc887a4d4e56fa82f26f706d7d40eb6a9f","source":{"kind":"arxiv","id":"1106.3404","version":2},"attestation_state":"computed","paper":{"title":"Study of the K0(L) --> pi0 pi0 nu nu-bar decay","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ex","authors_text":"A. Lednev, A. Moisseenko, A. S. Kurilin, A. Sugiyama, E391a Collaboration: R. Ogata, E. Iwai, E. Kuzmin, G. N. Perdue, G. Y. Lim, H. Ishii, H. Morii, H. Nanjo, H. Okuno, H. Sato, H. S. Lee, H. Watanabe, H. Y. Yoshida, I. Kato, J. Comfort, J. K. Ahn, J. Ma, J. Nix, K. F. Chen, K. Omata, K. Sakashita, M. Doroshenko, M. L. Wu, M. Nomachi, M. Sekimoto, M. Yamaga, N. Ishihara, N. Nishi, N. Sasao, S. Ishibashi, S. Kobayashi, S. Komatsu, S. Perov, S. Podolsky, S. Porokhovoy, S. Suzuki, S. Takita, S. Y. Lee, T. Inagaki, T. Iwata, T. K. Komatsubara, T. Matsumura, T. Morimoto, T. Nakano, T. Nomura, T. Sasaki, T. Sato, T. Shimogawa, T. Shinkawa, T. Sumida, T. Tsukamoto, T. Yamanaka, V. Baranov, Y. Akune, Y. B. Hsiung, Y. C. Tung, Y. Fujioka, Y. Nakajima, Y. Stepanenko, Y. Sugaya, Y. Tajima, Y. W. Wah, Y. Yoshimura, Y. Zheng, Z. Tsamalaidze","submitted_at":"2011-06-17T07:30:38Z","abstract_excerpt":"The rare decay K0(L) --> pi0 pi0 nu nu-bar was studied with the E391a detector at the KEK 12-GeV proton synchrotron. Based on 9.4 x 10^9 K0L decays, an upper limit of 8.1 x 10^{-7} was obtained for the branching fraction at 90% confidence level. We also set a limit on the K0(L) --> pi0 pi0 X (X --> invisible particles) process; the limit on the branching fraction varied from 7.0 x 10^{-7} to 4.0 x 10^{-5} for the mass of X ranging from 50 MeV/c^2 to 200 MeV/c^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":"1106.3404","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ex","submitted_at":"2011-06-17T07:30:38Z","cross_cats_sorted":[],"title_canon_sha256":"89ce57e3af3797662ca4a77bfb042b9654a9cb3c8930971892d7dfa6c76364fc","abstract_canon_sha256":"55940d495b28135ed31e69dffad0b2e8cfdfa12a0ea83e889f426153919a7563"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:23:24.151918Z","signature_b64":"2yju7f5NJuXLUGkz83qfZiXXOVJTtfoEAk9uTXq4FyH76Iv6jf1h2N6HmCcKPaLgAqPxttkI8koy8K4KvNAMCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4d7cb388a846ed881e08f67ad6c068dc887a4d4e56fa82f26f706d7d40eb6a9f","last_reissued_at":"2026-05-18T03:23:24.151143Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:23:24.151143Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Study of the K0(L) --> pi0 pi0 nu nu-bar decay","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ex","authors_text":"A. Lednev, A. Moisseenko, A. S. Kurilin, A. Sugiyama, E391a Collaboration: R. Ogata, E. Iwai, E. Kuzmin, G. N. Perdue, G. Y. Lim, H. Ishii, H. Morii, H. Nanjo, H. Okuno, H. Sato, H. S. Lee, H. Watanabe, H. Y. Yoshida, I. Kato, J. Comfort, J. K. Ahn, J. Ma, J. Nix, K. F. Chen, K. Omata, K. Sakashita, M. Doroshenko, M. L. Wu, M. Nomachi, M. Sekimoto, M. Yamaga, N. Ishihara, N. Nishi, N. Sasao, S. Ishibashi, S. Kobayashi, S. Komatsu, S. Perov, S. Podolsky, S. Porokhovoy, S. Suzuki, S. Takita, S. Y. Lee, T. Inagaki, T. Iwata, T. K. Komatsubara, T. Matsumura, T. Morimoto, T. Nakano, T. Nomura, T. Sasaki, T. Sato, T. Shimogawa, T. Shinkawa, T. Sumida, T. Tsukamoto, T. Yamanaka, V. Baranov, Y. Akune, Y. B. Hsiung, Y. C. Tung, Y. Fujioka, Y. Nakajima, Y. Stepanenko, Y. Sugaya, Y. Tajima, Y. W. Wah, Y. Yoshimura, Y. Zheng, Z. Tsamalaidze","submitted_at":"2011-06-17T07:30:38Z","abstract_excerpt":"The rare decay K0(L) --> pi0 pi0 nu nu-bar was studied with the E391a detector at the KEK 12-GeV proton synchrotron. Based on 9.4 x 10^9 K0L decays, an upper limit of 8.1 x 10^{-7} was obtained for the branching fraction at 90% confidence level. We also set a limit on the K0(L) --> pi0 pi0 X (X --> invisible particles) process; the limit on the branching fraction varied from 7.0 x 10^{-7} to 4.0 x 10^{-5} for the mass of X ranging from 50 MeV/c^2 to 200 MeV/c^2."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1106.3404","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":"1106.3404","created_at":"2026-05-18T03:23:24.151259+00:00"},{"alias_kind":"arxiv_version","alias_value":"1106.3404v2","created_at":"2026-05-18T03:23:24.151259+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1106.3404","created_at":"2026-05-18T03:23:24.151259+00:00"},{"alias_kind":"pith_short_12","alias_value":"JV6LHCFII3WY","created_at":"2026-05-18T12:26:32.869790+00:00"},{"alias_kind":"pith_short_16","alias_value":"JV6LHCFII3WYQHQI","created_at":"2026-05-18T12:26:32.869790+00:00"},{"alias_kind":"pith_short_8","alias_value":"JV6LHCFI","created_at":"2026-05-18T12:26:32.869790+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"2507.01947","citing_title":"Probing CP and flavor violation in neutral kaon decays with ALPs","ref_index":29,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/JV6LHCFII3WYQHQI6Z5NNQDI3S","json":"https://pith.science/pith/JV6LHCFII3WYQHQI6Z5NNQDI3S.json","graph_json":"https://pith.science/api/pith-number/JV6LHCFII3WYQHQI6Z5NNQDI3S/graph.json","events_json":"https://pith.science/api/pith-number/JV6LHCFII3WYQHQI6Z5NNQDI3S/events.json","paper":"https://pith.science/paper/JV6LHCFI"},"agent_actions":{"view_html":"https://pith.science/pith/JV6LHCFII3WYQHQI6Z5NNQDI3S","download_json":"https://pith.science/pith/JV6LHCFII3WYQHQI6Z5NNQDI3S.json","view_paper":"https://pith.science/paper/JV6LHCFI","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1106.3404&json=true","fetch_graph":"https://pith.science/api/pith-number/JV6LHCFII3WYQHQI6Z5NNQDI3S/graph.json","fetch_events":"https://pith.science/api/pith-number/JV6LHCFII3WYQHQI6Z5NNQDI3S/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/JV6LHCFII3WYQHQI6Z5NNQDI3S/action/timestamp_anchor","attest_storage":"https://pith.science/pith/JV6LHCFII3WYQHQI6Z5NNQDI3S/action/storage_attestation","attest_author":"https://pith.science/pith/JV6LHCFII3WYQHQI6Z5NNQDI3S/action/author_attestation","sign_citation":"https://pith.science/pith/JV6LHCFII3WYQHQI6Z5NNQDI3S/action/citation_signature","submit_replication":"https://pith.science/pith/JV6LHCFII3WYQHQI6Z5NNQDI3S/action/replication_record"}},"created_at":"2026-05-18T03:23:24.151259+00:00","updated_at":"2026-05-18T03:23:24.151259+00:00"}