{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:VMYWU4UY7AXXUHQAIPQJMZRWOL","short_pith_number":"pith:VMYWU4UY","canonical_record":{"source":{"id":"1901.03099","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ex","submitted_at":"2019-01-10T11:03:32Z","cross_cats_sorted":["physics.ins-det"],"title_canon_sha256":"94d7b1cc176be93315ad48cb2a6f8495e2985a737856d6e2ee97e65913344e93","abstract_canon_sha256":"4e12a982deebc57d7d71f5193cc3e6d7a34c37ad2a4e2601a38f7c6e1b9804a1"},"schema_version":"1.0"},"canonical_sha256":"ab316a7298f82f7a1e0043e096663672c3870763aa335e6cf3140834599a6b80","source":{"kind":"arxiv","id":"1901.03099","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1901.03099","created_at":"2026-05-17T23:45:22Z"},{"alias_kind":"arxiv_version","alias_value":"1901.03099v2","created_at":"2026-05-17T23:45:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1901.03099","created_at":"2026-05-17T23:45:22Z"},{"alias_kind":"pith_short_12","alias_value":"VMYWU4UY7AXX","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_16","alias_value":"VMYWU4UY7AXXUHQA","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_8","alias_value":"VMYWU4UY","created_at":"2026-05-18T12:33:30Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:VMYWU4UY7AXXUHQAIPQJMZRWOL","target":"record","payload":{"canonical_record":{"source":{"id":"1901.03099","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ex","submitted_at":"2019-01-10T11:03:32Z","cross_cats_sorted":["physics.ins-det"],"title_canon_sha256":"94d7b1cc176be93315ad48cb2a6f8495e2985a737856d6e2ee97e65913344e93","abstract_canon_sha256":"4e12a982deebc57d7d71f5193cc3e6d7a34c37ad2a4e2601a38f7c6e1b9804a1"},"schema_version":"1.0"},"canonical_sha256":"ab316a7298f82f7a1e0043e096663672c3870763aa335e6cf3140834599a6b80","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:45:22.378803Z","signature_b64":"Met3yueviDbT+Ch5R8RmbhwkZPeSFNZdEBsVodmxuhdrbHYIkrInr2ayRNvYY373S4PWZKq/hPWjZ9N5101zBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ab316a7298f82f7a1e0043e096663672c3870763aa335e6cf3140834599a6b80","last_reissued_at":"2026-05-17T23:45:22.378373Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:45:22.378373Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1901.03099","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-17T23:45:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"aCrPGAw8YwPu1kLEf2z/cekX45cV7rKf6lb0ZwYXdrsR066Kb2qj8t/5EmWeI2Q4B+kQB9HofiBO4Hac35fxCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T04:52:33.517068Z"},"content_sha256":"d5326042d10f023e32214434a5ef55ec5542687dd3e254edaf43f23abf11db76","schema_version":"1.0","event_id":"sha256:d5326042d10f023e32214434a5ef55ec5542687dd3e254edaf43f23abf11db76"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:VMYWU4UY7AXXUHQAIPQJMZRWOL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"KLEVER: An experiment to measure BR($K_L\\to\\pi^0\\nu\\bar{\\nu}$) at the CERN SPS","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.ins-det"],"primary_cat":"hep-ex","authors_text":"A. Antonelli, A. Bradley, A. Cassese, A. Filippi, A. Gerbershagen, A. Gianoli, A. Khotjantsev, A. Maslenkina, A. Mazzolari, A. Ostankov, A. Salamon, A. Shaykhiev, A. Smirnov, A. Sytov, C. Biino, D. Badoni, D. De Salvador, D. Di Filippo, D. Soldi, E. Imbergamo, E. Lutsenko, E. Menichetti, E. Vallazza, F. Ambrosino, F. Bucci, F. Fontana, F. Petrucci, F. Sargeni, G. Ballerini, G. Georgiev, G. Lamanna, G. Paoluzzi, G. Salina, I. Mannelli, I. Neri, J. Bernhard, K. Ayers, K. Kampf, L. Bandiera, L. Bomben, L. Gatignon, L. Litov, M.B. Brunetti, M. Corvino, M. Khabibullin, M. Lenti, M. Martini, M. Mirra, M. Moulson, M. Napolitano, M. Prest, M. Romagnoni, M. Rosenthal, M. Soldani, M. Sozzi, M. Van Dijk, N. Doble, N. Yershov (The KLEVER Project), O. Mineev, P. Massarotti, P. Rubin, R. Ammendola, R. Camattari, R. Fantechi, R. Volpe, R. Wanke, S. Fedotov, S. Kholodenko, S. Martellotti, T. Maiolino, V. Bonaiuto, V. Kozhuharov, V. Kurochka, V. Mascagna, V. Obraztsov, V. Semenov, V. Sugoniaev, Y. Kudenko","submitted_at":"2019-01-10T11:03:32Z","abstract_excerpt":"Precise measurements of the branching ratios for the flavor-changing neutral current decays $K\\to\\pi\\nu\\bar{\\nu}$ can provide unique constraints on CKM unitarity and, potentially, evidence for new physics. It is important to measure both decay modes, $K^+\\to\\pi^+\\nu\\bar{\\nu}$ and $K_L\\to\\pi^0\\nu\\bar{\\nu}$, since different new physics models affect the rates for each channel differently. The goal of the NA62 experiment at the CERN SPS is to measure the BR for the charged channel to within 10%. For the neutral channel, the BR has never been measured. We are designing the KLEVER experiment to mea"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.03099","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-17T23:45:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FGzKyddB+GGwnHDKdDXeQFMYMgor42P9i8klPgMwgDkvR1AqifJDzmIgXmEkznnbzW+YJWzqQQ95THp0+D5dAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T04:52:33.517752Z"},"content_sha256":"36746b8d19e1285b3d756c0a7458298e4f4d5b05763c3e2a826d3975c72175f5","schema_version":"1.0","event_id":"sha256:36746b8d19e1285b3d756c0a7458298e4f4d5b05763c3e2a826d3975c72175f5"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VMYWU4UY7AXXUHQAIPQJMZRWOL/bundle.json","state_url":"https://pith.science/pith/VMYWU4UY7AXXUHQAIPQJMZRWOL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VMYWU4UY7AXXUHQAIPQJMZRWOL/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-05-26T04:52:33Z","links":{"resolver":"https://pith.science/pith/VMYWU4UY7AXXUHQAIPQJMZRWOL","bundle":"https://pith.science/pith/VMYWU4UY7AXXUHQAIPQJMZRWOL/bundle.json","state":"https://pith.science/pith/VMYWU4UY7AXXUHQAIPQJMZRWOL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VMYWU4UY7AXXUHQAIPQJMZRWOL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:VMYWU4UY7AXXUHQAIPQJMZRWOL","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"4e12a982deebc57d7d71f5193cc3e6d7a34c37ad2a4e2601a38f7c6e1b9804a1","cross_cats_sorted":["physics.ins-det"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ex","submitted_at":"2019-01-10T11:03:32Z","title_canon_sha256":"94d7b1cc176be93315ad48cb2a6f8495e2985a737856d6e2ee97e65913344e93"},"schema_version":"1.0","source":{"id":"1901.03099","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1901.03099","created_at":"2026-05-17T23:45:22Z"},{"alias_kind":"arxiv_version","alias_value":"1901.03099v2","created_at":"2026-05-17T23:45:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1901.03099","created_at":"2026-05-17T23:45:22Z"},{"alias_kind":"pith_short_12","alias_value":"VMYWU4UY7AXX","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_16","alias_value":"VMYWU4UY7AXXUHQA","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_8","alias_value":"VMYWU4UY","created_at":"2026-05-18T12:33:30Z"}],"graph_snapshots":[{"event_id":"sha256:36746b8d19e1285b3d756c0a7458298e4f4d5b05763c3e2a826d3975c72175f5","target":"graph","created_at":"2026-05-17T23:45:22Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"Precise measurements of the branching ratios for the flavor-changing neutral current decays $K\\to\\pi\\nu\\bar{\\nu}$ can provide unique constraints on CKM unitarity and, potentially, evidence for new physics. It is important to measure both decay modes, $K^+\\to\\pi^+\\nu\\bar{\\nu}$ and $K_L\\to\\pi^0\\nu\\bar{\\nu}$, since different new physics models affect the rates for each channel differently. The goal of the NA62 experiment at the CERN SPS is to measure the BR for the charged channel to within 10%. For the neutral channel, the BR has never been measured. We are designing the KLEVER experiment to mea","authors_text":"A. Antonelli, A. Bradley, A. Cassese, A. Filippi, A. Gerbershagen, A. Gianoli, A. Khotjantsev, A. Maslenkina, A. Mazzolari, A. Ostankov, A. Salamon, A. Shaykhiev, A. Smirnov, A. Sytov, C. Biino, D. Badoni, D. De Salvador, D. Di Filippo, D. Soldi, E. Imbergamo, E. Lutsenko, E. Menichetti, E. Vallazza, F. Ambrosino, F. Bucci, F. Fontana, F. Petrucci, F. Sargeni, G. Ballerini, G. Georgiev, G. Lamanna, G. Paoluzzi, G. Salina, I. Mannelli, I. Neri, J. Bernhard, K. Ayers, K. Kampf, L. Bandiera, L. Bomben, L. Gatignon, L. Litov, M.B. Brunetti, M. Corvino, M. Khabibullin, M. Lenti, M. Martini, M. Mirra, M. Moulson, M. Napolitano, M. Prest, M. Romagnoni, M. Rosenthal, M. Soldani, M. Sozzi, M. Van Dijk, N. Doble, N. Yershov (The KLEVER Project), O. Mineev, P. Massarotti, P. Rubin, R. Ammendola, R. Camattari, R. Fantechi, R. Volpe, R. Wanke, S. Fedotov, S. Kholodenko, S. Martellotti, T. Maiolino, V. Bonaiuto, V. Kozhuharov, V. Kurochka, V. Mascagna, V. Obraztsov, V. Semenov, V. Sugoniaev, Y. Kudenko","cross_cats":["physics.ins-det"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ex","submitted_at":"2019-01-10T11:03:32Z","title":"KLEVER: An experiment to measure BR($K_L\\to\\pi^0\\nu\\bar{\\nu}$) at the CERN SPS"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.03099","kind":"arxiv","version":2},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:d5326042d10f023e32214434a5ef55ec5542687dd3e254edaf43f23abf11db76","target":"record","created_at":"2026-05-17T23:45:22Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"4e12a982deebc57d7d71f5193cc3e6d7a34c37ad2a4e2601a38f7c6e1b9804a1","cross_cats_sorted":["physics.ins-det"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ex","submitted_at":"2019-01-10T11:03:32Z","title_canon_sha256":"94d7b1cc176be93315ad48cb2a6f8495e2985a737856d6e2ee97e65913344e93"},"schema_version":"1.0","source":{"id":"1901.03099","kind":"arxiv","version":2}},"canonical_sha256":"ab316a7298f82f7a1e0043e096663672c3870763aa335e6cf3140834599a6b80","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ab316a7298f82f7a1e0043e096663672c3870763aa335e6cf3140834599a6b80","first_computed_at":"2026-05-17T23:45:22.378373Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:45:22.378373Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Met3yueviDbT+Ch5R8RmbhwkZPeSFNZdEBsVodmxuhdrbHYIkrInr2ayRNvYY373S4PWZKq/hPWjZ9N5101zBQ==","signature_status":"signed_v1","signed_at":"2026-05-17T23:45:22.378803Z","signed_message":"canonical_sha256_bytes"},"source_id":"1901.03099","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d5326042d10f023e32214434a5ef55ec5542687dd3e254edaf43f23abf11db76","sha256:36746b8d19e1285b3d756c0a7458298e4f4d5b05763c3e2a826d3975c72175f5"],"state_sha256":"53be05c473ad7490bc6d19d11a09c0f3694f5ce569b25fd10cd8dbdb7f2ecbdf"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wmMuhq9H5KsP7WD3JVcx22bGdyhsTaqQerTzyu5FcWDkNBxBRULJwpNmbSeLzxWeZcA8VjLLo4JVtWMZl6MjBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T04:52:33.521803Z","bundle_sha256":"306a98faa8d388a68628dee0adfbae79c8d68ccf8665ac0a05924c806e98c69a"}}