{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2002:VAACYS3LQF5QRRJDFOV4RBIL2A","short_pith_number":"pith:VAACYS3L","canonical_record":{"source":{"id":"hep-ph/0201256","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"hep-ph","submitted_at":"2002-01-28T13:01:18Z","cross_cats_sorted":[],"title_canon_sha256":"ce4fadf1acfab6fee9803e770a0b5b8b1b79de0f1ab15bf972b2d7fd8f174921","abstract_canon_sha256":"9ab569650f9b8d2952d7e1376dec5847a7cfa55fb4378b4cccc496df6bf97ff5"},"schema_version":"1.0"},"canonical_sha256":"a8002c4b6b817b08c5232babc8850bd03da133870c74a3f5b5cd93900011d8f3","source":{"kind":"arxiv","id":"hep-ph/0201256","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-ph/0201256","created_at":"2026-05-18T00:36:56Z"},{"alias_kind":"arxiv_version","alias_value":"hep-ph/0201256v1","created_at":"2026-05-18T00:36:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-ph/0201256","created_at":"2026-05-18T00:36:56Z"},{"alias_kind":"pith_short_12","alias_value":"VAACYS3LQF5Q","created_at":"2026-05-18T12:25:51Z"},{"alias_kind":"pith_short_16","alias_value":"VAACYS3LQF5QRRJD","created_at":"2026-05-18T12:25:51Z"},{"alias_kind":"pith_short_8","alias_value":"VAACYS3L","created_at":"2026-05-18T12:25:51Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2002:VAACYS3LQF5QRRJDFOV4RBIL2A","target":"record","payload":{"canonical_record":{"source":{"id":"hep-ph/0201256","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"hep-ph","submitted_at":"2002-01-28T13:01:18Z","cross_cats_sorted":[],"title_canon_sha256":"ce4fadf1acfab6fee9803e770a0b5b8b1b79de0f1ab15bf972b2d7fd8f174921","abstract_canon_sha256":"9ab569650f9b8d2952d7e1376dec5847a7cfa55fb4378b4cccc496df6bf97ff5"},"schema_version":"1.0"},"canonical_sha256":"a8002c4b6b817b08c5232babc8850bd03da133870c74a3f5b5cd93900011d8f3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:36:56.982997Z","signature_b64":"H+MM3+G7s0suHp9YFFvvY8T3cRy/mCyNJdkjZOAVKY+H6G025JApk9kmV52brVH6kqdzgTnUO9OlKwSsi1w9CA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a8002c4b6b817b08c5232babc8850bd03da133870c74a3f5b5cd93900011d8f3","last_reissued_at":"2026-05-18T00:36:56.982496Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:36:56.982496Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"hep-ph/0201256","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":"2026-05-18T00:36:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iSD3dIphk1boUb2Qi4uXzLwBc8BLikwvTlbkkMBB8zipocbeKu1ZvWnDBjmPtY5PMhzKeaK4Mu1qFLAuC4PbCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T14:16:05.046170Z"},"content_sha256":"3b7cc2f7ea507c23eea20ed8ece57c3d3e0538487523d3b2e33ae439a89c8ae8","schema_version":"1.0","event_id":"sha256:3b7cc2f7ea507c23eea20ed8ece57c3d3e0538487523d3b2e33ae439a89c8ae8"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2002:VAACYS3LQF5QRRJDFOV4RBIL2A","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Constraints for nuclear gluon shadowing from DIS data","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"C.A. Salgado, H. Honkanen, K.J. Eskola, V.J. Kolhinen","submitted_at":"2002-01-28T13:01:18Z","abstract_excerpt":"The $Q^2$ dependence of the ratios of the cross sections of deep inelastic lepton--nucleus scattering is studied in the framework of leading twist, lowest order perturbative QCD. The $\\log Q^2$ slope of the ratio $F_2^{\\rm Sn}/F_2^{\\rm C}$ is computed by using the DGLAP evolution equations, and shown to be sensitive to the nuclear gluon distribution functions. Four different parametrizations for the nuclear effects of parton distributions are studied. We show that the NMC data on the $Q^2$ dependence of $F_2^{\\rm Sn}/F_2^{\\rm C}$ rule out the case where nuclear shadowing (suppression) of gluon"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/0201256","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":""},"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":"2026-05-18T00:36:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iGfKgb8wjEeiYx0GMwoQNH7QUZbhF2eGT1gisCAjOc2RiuOW2k9zQKIZLm2Pb3fyf2werhWLlzX7UWE65EBeDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T14:16:05.046548Z"},"content_sha256":"999617df77f3bf79a55aea62d527ec87a9d7e9d0263ccfbf34c3f0fd651bfec1","schema_version":"1.0","event_id":"sha256:999617df77f3bf79a55aea62d527ec87a9d7e9d0263ccfbf34c3f0fd651bfec1"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VAACYS3LQF5QRRJDFOV4RBIL2A/bundle.json","state_url":"https://pith.science/pith/VAACYS3LQF5QRRJDFOV4RBIL2A/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VAACYS3LQF5QRRJDFOV4RBIL2A/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":"2026-05-30T14:16:05Z","links":{"resolver":"https://pith.science/pith/VAACYS3LQF5QRRJDFOV4RBIL2A","bundle":"https://pith.science/pith/VAACYS3LQF5QRRJDFOV4RBIL2A/bundle.json","state":"https://pith.science/pith/VAACYS3LQF5QRRJDFOV4RBIL2A/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VAACYS3LQF5QRRJDFOV4RBIL2A/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2002:VAACYS3LQF5QRRJDFOV4RBIL2A","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":"9ab569650f9b8d2952d7e1376dec5847a7cfa55fb4378b4cccc496df6bf97ff5","cross_cats_sorted":[],"license":"","primary_cat":"hep-ph","submitted_at":"2002-01-28T13:01:18Z","title_canon_sha256":"ce4fadf1acfab6fee9803e770a0b5b8b1b79de0f1ab15bf972b2d7fd8f174921"},"schema_version":"1.0","source":{"id":"hep-ph/0201256","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-ph/0201256","created_at":"2026-05-18T00:36:56Z"},{"alias_kind":"arxiv_version","alias_value":"hep-ph/0201256v1","created_at":"2026-05-18T00:36:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-ph/0201256","created_at":"2026-05-18T00:36:56Z"},{"alias_kind":"pith_short_12","alias_value":"VAACYS3LQF5Q","created_at":"2026-05-18T12:25:51Z"},{"alias_kind":"pith_short_16","alias_value":"VAACYS3LQF5QRRJD","created_at":"2026-05-18T12:25:51Z"},{"alias_kind":"pith_short_8","alias_value":"VAACYS3L","created_at":"2026-05-18T12:25:51Z"}],"graph_snapshots":[{"event_id":"sha256:999617df77f3bf79a55aea62d527ec87a9d7e9d0263ccfbf34c3f0fd651bfec1","target":"graph","created_at":"2026-05-18T00:36:56Z","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":"The $Q^2$ dependence of the ratios of the cross sections of deep inelastic lepton--nucleus scattering is studied in the framework of leading twist, lowest order perturbative QCD. The $\\log Q^2$ slope of the ratio $F_2^{\\rm Sn}/F_2^{\\rm C}$ is computed by using the DGLAP evolution equations, and shown to be sensitive to the nuclear gluon distribution functions. Four different parametrizations for the nuclear effects of parton distributions are studied. We show that the NMC data on the $Q^2$ dependence of $F_2^{\\rm Sn}/F_2^{\\rm C}$ rule out the case where nuclear shadowing (suppression) of gluon","authors_text":"C.A. Salgado, H. Honkanen, K.J. Eskola, V.J. Kolhinen","cross_cats":[],"headline":"","license":"","primary_cat":"hep-ph","submitted_at":"2002-01-28T13:01:18Z","title":"Constraints for nuclear gluon shadowing from DIS data"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/0201256","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":"sha256:3b7cc2f7ea507c23eea20ed8ece57c3d3e0538487523d3b2e33ae439a89c8ae8","target":"record","created_at":"2026-05-18T00:36:56Z","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":"9ab569650f9b8d2952d7e1376dec5847a7cfa55fb4378b4cccc496df6bf97ff5","cross_cats_sorted":[],"license":"","primary_cat":"hep-ph","submitted_at":"2002-01-28T13:01:18Z","title_canon_sha256":"ce4fadf1acfab6fee9803e770a0b5b8b1b79de0f1ab15bf972b2d7fd8f174921"},"schema_version":"1.0","source":{"id":"hep-ph/0201256","kind":"arxiv","version":1}},"canonical_sha256":"a8002c4b6b817b08c5232babc8850bd03da133870c74a3f5b5cd93900011d8f3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a8002c4b6b817b08c5232babc8850bd03da133870c74a3f5b5cd93900011d8f3","first_computed_at":"2026-05-18T00:36:56.982496Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:36:56.982496Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"H+MM3+G7s0suHp9YFFvvY8T3cRy/mCyNJdkjZOAVKY+H6G025JApk9kmV52brVH6kqdzgTnUO9OlKwSsi1w9CA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:36:56.982997Z","signed_message":"canonical_sha256_bytes"},"source_id":"hep-ph/0201256","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3b7cc2f7ea507c23eea20ed8ece57c3d3e0538487523d3b2e33ae439a89c8ae8","sha256:999617df77f3bf79a55aea62d527ec87a9d7e9d0263ccfbf34c3f0fd651bfec1"],"state_sha256":"d2655076a8ee96d376acf6c3be3ea0274cc785174be2e961d5b0b90d04098ba4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"O4y5Gvg84YF+BDbr+dNfFKcZAAhdaLRBbNzO24EIrvUNW7XZ+EhYfYH/pWwsHc9J4rxhyOJdY+5pLMCFF03uCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T14:16:05.048922Z","bundle_sha256":"aeba1d9c743a9dbafb2aaa8eafdd07190c1d54dec7dafa0d22065177087994da"}}