{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2002:NGSCPTFNEVW5TBUIRPYS2WM533","short_pith_number":"pith:NGSCPTFN","canonical_record":{"source":{"id":"hep-ph/0202216","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"hep-ph","submitted_at":"2002-02-22T19:20:09Z","cross_cats_sorted":["nucl-th"],"title_canon_sha256":"6a829bc436a8f1e1f49cf6720d5b4724cd073b1c2181e7a136a92763366c2f6c","abstract_canon_sha256":"399454e61f4a9ece6efca01a7b2bd5090be336c4df778a887144af7df4a7a942"},"schema_version":"1.0"},"canonical_sha256":"69a427ccad256dd986888bf12d599ddeed605a64a209e5a126367bc5de382b20","source":{"kind":"arxiv","id":"hep-ph/0202216","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-ph/0202216","created_at":"2026-07-04T16:34:01Z"},{"alias_kind":"arxiv_version","alias_value":"hep-ph/0202216v2","created_at":"2026-07-04T16:34:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-ph/0202216","created_at":"2026-07-04T16:34:01Z"},{"alias_kind":"pith_short_12","alias_value":"NGSCPTFNEVW5","created_at":"2026-07-04T16:34:01Z"},{"alias_kind":"pith_short_16","alias_value":"NGSCPTFNEVW5TBUI","created_at":"2026-07-04T16:34:01Z"},{"alias_kind":"pith_short_8","alias_value":"NGSCPTFN","created_at":"2026-07-04T16:34:01Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2002:NGSCPTFNEVW5TBUIRPYS2WM533","target":"record","payload":{"canonical_record":{"source":{"id":"hep-ph/0202216","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"hep-ph","submitted_at":"2002-02-22T19:20:09Z","cross_cats_sorted":["nucl-th"],"title_canon_sha256":"6a829bc436a8f1e1f49cf6720d5b4724cd073b1c2181e7a136a92763366c2f6c","abstract_canon_sha256":"399454e61f4a9ece6efca01a7b2bd5090be336c4df778a887144af7df4a7a942"},"schema_version":"1.0"},"canonical_sha256":"69a427ccad256dd986888bf12d599ddeed605a64a209e5a126367bc5de382b20","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T16:34:01.242079Z","signature_b64":"JGF5sdv9wRpgh3fluDws/EhfPqJZ3HQjqBN0Yqu7T7w0QL+xoRdGyTJTNXiu9cFadIVBVHfYbY5dqiXnhfnJAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"69a427ccad256dd986888bf12d599ddeed605a64a209e5a126367bc5de382b20","last_reissued_at":"2026-07-04T16:34:01.241657Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T16:34:01.241657Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"hep-ph/0202216","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":"2026-07-04T16:34:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FctjFnJHIkXkW75VQhhcf0EO9NL0QYLuDv38VQ9H7Zaosxsc81joUFHwll6xGxNx2Ef8DJhuF4eZZ+uYOT0KDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-27T13:02:31.806838Z"},"content_sha256":"4e735bf217c90b139dd7c54d7c1c46d0d9ea54b9f1f93f0495f1258d5b9c6845","schema_version":"1.0","event_id":"sha256:4e735bf217c90b139dd7c54d7c1c46d0d9ea54b9f1f93f0495f1258d5b9c6845"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2002:NGSCPTFNEVW5TBUIRPYS2WM533","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Electroproduction of Charmonia off Nuclei","license":"","headline":"","cross_cats":["nucl-th"],"primary_cat":"hep-ph","authors_text":"A.V. Tarasov, B.Z. Kopeliovich, J. Huefner, Yu.P. Ivanov","submitted_at":"2002-02-22T19:20:09Z","abstract_excerpt":"In a recent publication we have calculated elastic charmonium production in ep collisions employing realistic charmonia wave functions and dipole cross sections and have found good agreement with the data in a wide range of s and Q^2. Using the ingredients from those calculations we calculate exclusive electroproduction of charmonia off nuclei. Here new effects become important, (i) color filtering of the c-cbar pair on its trajectory through nuclear matter, (ii) dependence on the finite lifetime of the c-cbar fluctuation (coherence length) and (iii) gluon shadowing in a nucleus compared to th"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/0202216","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/hep-ph/0202216/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":"2026-07-04T16:34:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SE4+4euMU0M/zNvUxkJ3Pmb0miyqxnUFd4B7srGP7Le8qvBdK8zH3oD9XRZXkcddhcqIVcVFVn9smZwJcbRJDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-27T13:02:31.807219Z"},"content_sha256":"9989fcd257c0eddaf2029b4d528e0346463740fb13c442db758ae74d6e6132fb","schema_version":"1.0","event_id":"sha256:9989fcd257c0eddaf2029b4d528e0346463740fb13c442db758ae74d6e6132fb"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NGSCPTFNEVW5TBUIRPYS2WM533/bundle.json","state_url":"https://pith.science/pith/NGSCPTFNEVW5TBUIRPYS2WM533/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NGSCPTFNEVW5TBUIRPYS2WM533/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":"2026-07-27T13:02:31Z","links":{"resolver":"https://pith.science/pith/NGSCPTFNEVW5TBUIRPYS2WM533","bundle":"https://pith.science/pith/NGSCPTFNEVW5TBUIRPYS2WM533/bundle.json","state":"https://pith.science/pith/NGSCPTFNEVW5TBUIRPYS2WM533/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NGSCPTFNEVW5TBUIRPYS2WM533/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2002:NGSCPTFNEVW5TBUIRPYS2WM533","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":"399454e61f4a9ece6efca01a7b2bd5090be336c4df778a887144af7df4a7a942","cross_cats_sorted":["nucl-th"],"license":"","primary_cat":"hep-ph","submitted_at":"2002-02-22T19:20:09Z","title_canon_sha256":"6a829bc436a8f1e1f49cf6720d5b4724cd073b1c2181e7a136a92763366c2f6c"},"schema_version":"1.0","source":{"id":"hep-ph/0202216","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-ph/0202216","created_at":"2026-07-04T16:34:01Z"},{"alias_kind":"arxiv_version","alias_value":"hep-ph/0202216v2","created_at":"2026-07-04T16:34:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-ph/0202216","created_at":"2026-07-04T16:34:01Z"},{"alias_kind":"pith_short_12","alias_value":"NGSCPTFNEVW5","created_at":"2026-07-04T16:34:01Z"},{"alias_kind":"pith_short_16","alias_value":"NGSCPTFNEVW5TBUI","created_at":"2026-07-04T16:34:01Z"},{"alias_kind":"pith_short_8","alias_value":"NGSCPTFN","created_at":"2026-07-04T16:34:01Z"}],"graph_snapshots":[{"event_id":"sha256:9989fcd257c0eddaf2029b4d528e0346463740fb13c442db758ae74d6e6132fb","target":"graph","created_at":"2026-07-04T16:34:01Z","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/hep-ph/0202216/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"In a recent publication we have calculated elastic charmonium production in ep collisions employing realistic charmonia wave functions and dipole cross sections and have found good agreement with the data in a wide range of s and Q^2. Using the ingredients from those calculations we calculate exclusive electroproduction of charmonia off nuclei. Here new effects become important, (i) color filtering of the c-cbar pair on its trajectory through nuclear matter, (ii) dependence on the finite lifetime of the c-cbar fluctuation (coherence length) and (iii) gluon shadowing in a nucleus compared to th","authors_text":"A.V. Tarasov, B.Z. Kopeliovich, J. Huefner, Yu.P. Ivanov","cross_cats":["nucl-th"],"headline":"","license":"","primary_cat":"hep-ph","submitted_at":"2002-02-22T19:20:09Z","title":"Electroproduction of Charmonia off Nuclei"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/0202216","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":"sha256:4e735bf217c90b139dd7c54d7c1c46d0d9ea54b9f1f93f0495f1258d5b9c6845","target":"record","created_at":"2026-07-04T16:34:01Z","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":"399454e61f4a9ece6efca01a7b2bd5090be336c4df778a887144af7df4a7a942","cross_cats_sorted":["nucl-th"],"license":"","primary_cat":"hep-ph","submitted_at":"2002-02-22T19:20:09Z","title_canon_sha256":"6a829bc436a8f1e1f49cf6720d5b4724cd073b1c2181e7a136a92763366c2f6c"},"schema_version":"1.0","source":{"id":"hep-ph/0202216","kind":"arxiv","version":2}},"canonical_sha256":"69a427ccad256dd986888bf12d599ddeed605a64a209e5a126367bc5de382b20","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"69a427ccad256dd986888bf12d599ddeed605a64a209e5a126367bc5de382b20","first_computed_at":"2026-07-04T16:34:01.241657Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:34:01.241657Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"JGF5sdv9wRpgh3fluDws/EhfPqJZ3HQjqBN0Yqu7T7w0QL+xoRdGyTJTNXiu9cFadIVBVHfYbY5dqiXnhfnJAg==","signature_status":"signed_v1","signed_at":"2026-07-04T16:34:01.242079Z","signed_message":"canonical_sha256_bytes"},"source_id":"hep-ph/0202216","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4e735bf217c90b139dd7c54d7c1c46d0d9ea54b9f1f93f0495f1258d5b9c6845","sha256:9989fcd257c0eddaf2029b4d528e0346463740fb13c442db758ae74d6e6132fb"],"state_sha256":"7782db34993afc2edb91e52d9c489eb81d791d81311209ac33d12b88c12f401b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0/MgJ62gZ173Q0eHdtQQcSj8512BLbQRnMz3YR18+yBzbP6JC5M/uSQG6Z0FkRe3UJiSPWK0Qkpkam8bW8ptDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-27T13:02:31.809362Z","bundle_sha256":"330c8e7a4cdb8dd8e36360000c6e9b399c404e97d57f4b7ea43acfbea208e4ac"}}