{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:U5RXKJVCMWJGZ3QMNHTI5O6F2Z","short_pith_number":"pith:U5RXKJVC","canonical_record":{"source":{"id":"0906.1946","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2009-06-10T14:24:50Z","cross_cats_sorted":[],"title_canon_sha256":"62c25eac319510cbdb840ca841acf22e828b193495bc442a87547c971cfee56d","abstract_canon_sha256":"46c08467005de9efe73f8b5eb608cbb4e11b6b958698207a13dba7fba2081883"},"schema_version":"1.0"},"canonical_sha256":"a7637526a265926cee0c69e68ebbc5d6555a03fbb8e1dbed11569120cc3a6f6c","source":{"kind":"arxiv","id":"0906.1946","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0906.1946","created_at":"2026-07-04T17:18:57Z"},{"alias_kind":"arxiv_version","alias_value":"0906.1946v1","created_at":"2026-07-04T17:18:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0906.1946","created_at":"2026-07-04T17:18:57Z"},{"alias_kind":"pith_short_12","alias_value":"U5RXKJVCMWJG","created_at":"2026-07-04T17:18:57Z"},{"alias_kind":"pith_short_16","alias_value":"U5RXKJVCMWJGZ3QM","created_at":"2026-07-04T17:18:57Z"},{"alias_kind":"pith_short_8","alias_value":"U5RXKJVC","created_at":"2026-07-04T17:18:57Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:U5RXKJVCMWJGZ3QMNHTI5O6F2Z","target":"record","payload":{"canonical_record":{"source":{"id":"0906.1946","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2009-06-10T14:24:50Z","cross_cats_sorted":[],"title_canon_sha256":"62c25eac319510cbdb840ca841acf22e828b193495bc442a87547c971cfee56d","abstract_canon_sha256":"46c08467005de9efe73f8b5eb608cbb4e11b6b958698207a13dba7fba2081883"},"schema_version":"1.0"},"canonical_sha256":"a7637526a265926cee0c69e68ebbc5d6555a03fbb8e1dbed11569120cc3a6f6c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T17:18:57.168818Z","signature_b64":"QPAvciNkYY9d45XNqScGt57U+PfN58CwfOCin+6b+UTFUAfDCHrLidfOM+X+wDeWZjL9D5tGY5KNL0bX2X1+DA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a7637526a265926cee0c69e68ebbc5d6555a03fbb8e1dbed11569120cc3a6f6c","last_reissued_at":"2026-07-04T17:18:57.168388Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T17:18:57.168388Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0906.1946","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":"2026-07-04T17:18:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"g5Cin0Xe5EstaKq8klVdulgpS15vusTpBg7ok3WplfVxIGg5N4lJrQW9XjpBu3Hb7clu3WbkvdZlKcXwqvpOAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T09:17:00.067573Z"},"content_sha256":"2789f122e9367f19c522eb045a6d895682e4b2c8db96dd0107ddd57cec096094","schema_version":"1.0","event_id":"sha256:2789f122e9367f19c522eb045a6d895682e4b2c8db96dd0107ddd57cec096094"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:U5RXKJVCMWJGZ3QMNHTI5O6F2Z","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The study of the negative pion production in neutron-proton collisions at beam momenta below 1.8 GeV/c","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"A.A. Vasiliev, A.V. Sarantsev, K.N. Ermakov, L.M. Kochenda, O.V. Rogachevsky, S.G. Sherman, V.A. Nikonov, V.A. Trofimov, V.I. Medvedev, V.V. Sarantsev","submitted_at":"2009-06-10T14:24:50Z","abstract_excerpt":"A detailed investigation of the reaction np -> pp\\pi^{-} has been carried out using the data obtained with the continuous neutron beam produced by charge exchange scattering of protons off a deuterium target. A partial wave event-by-event based maximum likelihood analysis was applied to determine contributions of different partial waves to the pion production process. The combined analysis of the np -> pp\\pi^{-} and pp -> pp\\pi^{0} data measured in the same energy region allows us to determine the contribution of isoscalar partial waves (I=0) in the momentum range from 1.1 up to 1.8 GeV/c. The"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0906.1946","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/0906.1946/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":"2026-07-04T17:18:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"P3pADpiRkC4jFx6iklfHiBjHHBncKp3OuPHIGZS7RcU2ddysTUt1y3t6hrroGlSTZi5u7Yt12gNaKLIccmSFDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T09:17:00.068067Z"},"content_sha256":"56c95b53455e95ab7aec7fd3b3449c5eaf9ec7e428b85a735b6e70ea8c58885e","schema_version":"1.0","event_id":"sha256:56c95b53455e95ab7aec7fd3b3449c5eaf9ec7e428b85a735b6e70ea8c58885e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/U5RXKJVCMWJGZ3QMNHTI5O6F2Z/bundle.json","state_url":"https://pith.science/pith/U5RXKJVCMWJGZ3QMNHTI5O6F2Z/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/U5RXKJVCMWJGZ3QMNHTI5O6F2Z/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":"2026-08-07T09:17:00Z","links":{"resolver":"https://pith.science/pith/U5RXKJVCMWJGZ3QMNHTI5O6F2Z","bundle":"https://pith.science/pith/U5RXKJVCMWJGZ3QMNHTI5O6F2Z/bundle.json","state":"https://pith.science/pith/U5RXKJVCMWJGZ3QMNHTI5O6F2Z/state.json","well_known_bundle":"https://pith.science/.well-known/pith/U5RXKJVCMWJGZ3QMNHTI5O6F2Z/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:U5RXKJVCMWJGZ3QMNHTI5O6F2Z","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":"46c08467005de9efe73f8b5eb608cbb4e11b6b958698207a13dba7fba2081883","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2009-06-10T14:24:50Z","title_canon_sha256":"62c25eac319510cbdb840ca841acf22e828b193495bc442a87547c971cfee56d"},"schema_version":"1.0","source":{"id":"0906.1946","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0906.1946","created_at":"2026-07-04T17:18:57Z"},{"alias_kind":"arxiv_version","alias_value":"0906.1946v1","created_at":"2026-07-04T17:18:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0906.1946","created_at":"2026-07-04T17:18:57Z"},{"alias_kind":"pith_short_12","alias_value":"U5RXKJVCMWJG","created_at":"2026-07-04T17:18:57Z"},{"alias_kind":"pith_short_16","alias_value":"U5RXKJVCMWJGZ3QM","created_at":"2026-07-04T17:18:57Z"},{"alias_kind":"pith_short_8","alias_value":"U5RXKJVC","created_at":"2026-07-04T17:18:57Z"}],"graph_snapshots":[{"event_id":"sha256:56c95b53455e95ab7aec7fd3b3449c5eaf9ec7e428b85a735b6e70ea8c58885e","target":"graph","created_at":"2026-07-04T17:18:57Z","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/0906.1946/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"A detailed investigation of the reaction np -> pp\\pi^{-} has been carried out using the data obtained with the continuous neutron beam produced by charge exchange scattering of protons off a deuterium target. A partial wave event-by-event based maximum likelihood analysis was applied to determine contributions of different partial waves to the pion production process. The combined analysis of the np -> pp\\pi^{-} and pp -> pp\\pi^{0} data measured in the same energy region allows us to determine the contribution of isoscalar partial waves (I=0) in the momentum range from 1.1 up to 1.8 GeV/c. The","authors_text":"A.A. Vasiliev, A.V. Sarantsev, K.N. Ermakov, L.M. Kochenda, O.V. Rogachevsky, S.G. Sherman, V.A. Nikonov, V.A. Trofimov, V.I. Medvedev, V.V. Sarantsev","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2009-06-10T14:24:50Z","title":"The study of the negative pion production in neutron-proton collisions at beam momenta below 1.8 GeV/c"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0906.1946","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":"sha256:2789f122e9367f19c522eb045a6d895682e4b2c8db96dd0107ddd57cec096094","target":"record","created_at":"2026-07-04T17:18:57Z","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":"46c08467005de9efe73f8b5eb608cbb4e11b6b958698207a13dba7fba2081883","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2009-06-10T14:24:50Z","title_canon_sha256":"62c25eac319510cbdb840ca841acf22e828b193495bc442a87547c971cfee56d"},"schema_version":"1.0","source":{"id":"0906.1946","kind":"arxiv","version":1}},"canonical_sha256":"a7637526a265926cee0c69e68ebbc5d6555a03fbb8e1dbed11569120cc3a6f6c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a7637526a265926cee0c69e68ebbc5d6555a03fbb8e1dbed11569120cc3a6f6c","first_computed_at":"2026-07-04T17:18:57.168388Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T17:18:57.168388Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"QPAvciNkYY9d45XNqScGt57U+PfN58CwfOCin+6b+UTFUAfDCHrLidfOM+X+wDeWZjL9D5tGY5KNL0bX2X1+DA==","signature_status":"signed_v1","signed_at":"2026-07-04T17:18:57.168818Z","signed_message":"canonical_sha256_bytes"},"source_id":"0906.1946","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2789f122e9367f19c522eb045a6d895682e4b2c8db96dd0107ddd57cec096094","sha256:56c95b53455e95ab7aec7fd3b3449c5eaf9ec7e428b85a735b6e70ea8c58885e"],"state_sha256":"3044c54d99677a473b4e1ffdc1de59f3ba7123a52d03be7b718f783fb86fb8b2"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LYugUl0OiVp46SlFRJNoe6o9+czkGhor2z4fCq/EAO7CGc6NePKg1q3ZPNLExhr61k7UONmZ+saehJ+W7vsqAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-07T09:17:00.071983Z","bundle_sha256":"1328e370942acc5236ec437d93ecaa61b15f39b590cc9f1f38b44f159eb92ea8"}}