{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2004:56N4HPU3DTNUTU5FZ5U57MAB5O","short_pith_number":"pith:56N4HPU3","canonical_record":{"source":{"id":"nucl-ex/0406034","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"nucl-ex","submitted_at":"2004-06-30T15:31:47Z","cross_cats_sorted":[],"title_canon_sha256":"b36a0a36c575c68d1637a4257648c2a936ec32cae91961d900643fabb4747691","abstract_canon_sha256":"7f9d18c53bb082ca9d2ab25b148641b376d5ff79fb899e3949b2a34fb8b17c70"},"schema_version":"1.0"},"canonical_sha256":"ef9bc3be9b1cdb49d3a5cf69dfb001eb94f310bd675bd9335a87dd497ce6bb1c","source":{"kind":"arxiv","id":"nucl-ex/0406034","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"nucl-ex/0406034","created_at":"2026-07-04T14:42:12Z"},{"alias_kind":"arxiv_version","alias_value":"nucl-ex/0406034v1","created_at":"2026-07-04T14:42:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.nucl-ex/0406034","created_at":"2026-07-04T14:42:12Z"},{"alias_kind":"pith_short_12","alias_value":"56N4HPU3DTNU","created_at":"2026-07-04T14:42:12Z"},{"alias_kind":"pith_short_16","alias_value":"56N4HPU3DTNUTU5F","created_at":"2026-07-04T14:42:12Z"},{"alias_kind":"pith_short_8","alias_value":"56N4HPU3","created_at":"2026-07-04T14:42:12Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2004:56N4HPU3DTNUTU5FZ5U57MAB5O","target":"record","payload":{"canonical_record":{"source":{"id":"nucl-ex/0406034","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"nucl-ex","submitted_at":"2004-06-30T15:31:47Z","cross_cats_sorted":[],"title_canon_sha256":"b36a0a36c575c68d1637a4257648c2a936ec32cae91961d900643fabb4747691","abstract_canon_sha256":"7f9d18c53bb082ca9d2ab25b148641b376d5ff79fb899e3949b2a34fb8b17c70"},"schema_version":"1.0"},"canonical_sha256":"ef9bc3be9b1cdb49d3a5cf69dfb001eb94f310bd675bd9335a87dd497ce6bb1c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T14:42:12.651357Z","signature_b64":"ARUU0jfhatco4UjBm1ecN5fc0Z37xEv4CGUR/jW5sfj2K6mx+URApm9ZVqEU4MqWc7GnOTdg8uEYvmX7W5XcAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ef9bc3be9b1cdb49d3a5cf69dfb001eb94f310bd675bd9335a87dd497ce6bb1c","last_reissued_at":"2026-07-04T14:42:12.650969Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T14:42:12.650969Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"nucl-ex/0406034","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-04T14:42:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YpQZttlrPI/pCnf62Q4M1UF128Habd8kaZM6fARg5VdNSy4JPTsdODaMM3w6aFAu6iLkeSxiRqvHqRkmR7RpCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-12T22:55:12.893928Z"},"content_sha256":"f599ddeae95fc501108036b94d96393c63532311c51d0893c3b38363cfcfc252","schema_version":"1.0","event_id":"sha256:f599ddeae95fc501108036b94d96393c63532311c51d0893c3b38363cfcfc252"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2004:56N4HPU3DTNUTU5FZ5U57MAB5O","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Polarization observables in the eta meson production","license":"","headline":"","cross_cats":[],"primary_cat":"nucl-ex","authors_text":"A. Budzanowski, A. Khoukaz, A. Taeschner, B. Kamys, C. Piskor-Ignatowicz, D. Grzonka, H.-H. Adam, J. Przerwa, J. Smyrski, K. Kilian, L. Jarczyk, M. Janusz, M. Siemaszko, M. Wolke, P. Moskal, P. Winter, P. Wuestner, R. Czyzykiewicz, T. Rozek, T. Sefzick, W. Oelert, W. Zipper","submitted_at":"2004-06-30T15:31:47Z","abstract_excerpt":"We propose to extend the investigations of the eta meson production in nucleon-nucleon collisions by studying single and double polarization observables. Over the last years, the eta meson has been studied at several different experiments mainly by measurements of unpolarized total and differential cross sections. To reveal the production mechanism, polarization observables help to disentangle the amplitudes of the partial waves and therefore to understand the underlying exchange processes. Analyzing powers have been measured enabling to separate the contributing amount of some of these amplit"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"nucl-ex/0406034","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/nucl-ex/0406034/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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-04T14:42:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"I59IV+/4nfFbaDUPmRaqdwICSyN0m9vkycJRolBar+MfoWPTTkPtZ+RlCIp8k3G/7x9jonHlr3UmEYAiIRnqBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-12T22:55:12.894426Z"},"content_sha256":"ea83da89f72358b4114921fe5c04b8409c043912d1c0b2e03b6360f6f2d0d824","schema_version":"1.0","event_id":"sha256:ea83da89f72358b4114921fe5c04b8409c043912d1c0b2e03b6360f6f2d0d824"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/56N4HPU3DTNUTU5FZ5U57MAB5O/bundle.json","state_url":"https://pith.science/pith/56N4HPU3DTNUTU5FZ5U57MAB5O/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/56N4HPU3DTNUTU5FZ5U57MAB5O/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":"2026-08-12T22:55:12Z","links":{"resolver":"https://pith.science/pith/56N4HPU3DTNUTU5FZ5U57MAB5O","bundle":"https://pith.science/pith/56N4HPU3DTNUTU5FZ5U57MAB5O/bundle.json","state":"https://pith.science/pith/56N4HPU3DTNUTU5FZ5U57MAB5O/state.json","well_known_bundle":"https://pith.science/.well-known/pith/56N4HPU3DTNUTU5FZ5U57MAB5O/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2004:56N4HPU3DTNUTU5FZ5U57MAB5O","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":"7f9d18c53bb082ca9d2ab25b148641b376d5ff79fb899e3949b2a34fb8b17c70","cross_cats_sorted":[],"license":"","primary_cat":"nucl-ex","submitted_at":"2004-06-30T15:31:47Z","title_canon_sha256":"b36a0a36c575c68d1637a4257648c2a936ec32cae91961d900643fabb4747691"},"schema_version":"1.0","source":{"id":"nucl-ex/0406034","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"nucl-ex/0406034","created_at":"2026-07-04T14:42:12Z"},{"alias_kind":"arxiv_version","alias_value":"nucl-ex/0406034v1","created_at":"2026-07-04T14:42:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.nucl-ex/0406034","created_at":"2026-07-04T14:42:12Z"},{"alias_kind":"pith_short_12","alias_value":"56N4HPU3DTNU","created_at":"2026-07-04T14:42:12Z"},{"alias_kind":"pith_short_16","alias_value":"56N4HPU3DTNUTU5F","created_at":"2026-07-04T14:42:12Z"},{"alias_kind":"pith_short_8","alias_value":"56N4HPU3","created_at":"2026-07-04T14:42:12Z"}],"graph_snapshots":[{"event_id":"sha256:ea83da89f72358b4114921fe5c04b8409c043912d1c0b2e03b6360f6f2d0d824","target":"graph","created_at":"2026-07-04T14:42:12Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/nucl-ex/0406034/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We propose to extend the investigations of the eta meson production in nucleon-nucleon collisions by studying single and double polarization observables. Over the last years, the eta meson has been studied at several different experiments mainly by measurements of unpolarized total and differential cross sections. To reveal the production mechanism, polarization observables help to disentangle the amplitudes of the partial waves and therefore to understand the underlying exchange processes. Analyzing powers have been measured enabling to separate the contributing amount of some of these amplit","authors_text":"A. Budzanowski, A. Khoukaz, A. Taeschner, B. Kamys, C. Piskor-Ignatowicz, D. Grzonka, H.-H. Adam, J. Przerwa, J. Smyrski, K. Kilian, L. Jarczyk, M. Janusz, M. Siemaszko, M. Wolke, P. Moskal, P. Winter, P. Wuestner, R. Czyzykiewicz, T. Rozek, T. Sefzick, W. Oelert, W. Zipper","cross_cats":[],"headline":"","license":"","primary_cat":"nucl-ex","submitted_at":"2004-06-30T15:31:47Z","title":"Polarization observables in the eta meson production"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"nucl-ex/0406034","kind":"arxiv","version":1},"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:f599ddeae95fc501108036b94d96393c63532311c51d0893c3b38363cfcfc252","target":"record","created_at":"2026-07-04T14:42:12Z","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":"7f9d18c53bb082ca9d2ab25b148641b376d5ff79fb899e3949b2a34fb8b17c70","cross_cats_sorted":[],"license":"","primary_cat":"nucl-ex","submitted_at":"2004-06-30T15:31:47Z","title_canon_sha256":"b36a0a36c575c68d1637a4257648c2a936ec32cae91961d900643fabb4747691"},"schema_version":"1.0","source":{"id":"nucl-ex/0406034","kind":"arxiv","version":1}},"canonical_sha256":"ef9bc3be9b1cdb49d3a5cf69dfb001eb94f310bd675bd9335a87dd497ce6bb1c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ef9bc3be9b1cdb49d3a5cf69dfb001eb94f310bd675bd9335a87dd497ce6bb1c","first_computed_at":"2026-07-04T14:42:12.650969Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T14:42:12.650969Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ARUU0jfhatco4UjBm1ecN5fc0Z37xEv4CGUR/jW5sfj2K6mx+URApm9ZVqEU4MqWc7GnOTdg8uEYvmX7W5XcAw==","signature_status":"signed_v1","signed_at":"2026-07-04T14:42:12.651357Z","signed_message":"canonical_sha256_bytes"},"source_id":"nucl-ex/0406034","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f599ddeae95fc501108036b94d96393c63532311c51d0893c3b38363cfcfc252","sha256:ea83da89f72358b4114921fe5c04b8409c043912d1c0b2e03b6360f6f2d0d824"],"state_sha256":"c0ae5a941863c27615630e4fe2efeba2906e6d8006c86750842479ed240499de"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EuAfg5vXWcbOsTJ1rSwBPfLEV80WRi2Vg7dDmHYnF88mNCJAaC0Wma5+UjqfXLb3yMEpu8brMz7FO9n7Al6vAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-12T22:55:12.899117Z","bundle_sha256":"6a5f720202fdc14f4eee716884973419582e3fe0c4b82b8720996d974ad60b62"}}