{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2002:DTQ72FGZR3FQLMU6CS2XXVRYOR","short_pith_number":"pith:DTQ72FGZ","canonical_record":{"source":{"id":"hep-ph/0212160","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"hep-ph","submitted_at":"2002-12-11T16:54:13Z","cross_cats_sorted":[],"title_canon_sha256":"cbbdab08a10f716a990646c26ccc9bf5b9d3ddadecd0ebb0ea7c8992943d00ae","abstract_canon_sha256":"d19c529eecdbbdab48b13f018c2f935756dd0c92d63f2d30dae1dcfdc7947bcf"},"schema_version":"1.0"},"canonical_sha256":"1ce1fd14d98ecb05b29e14b57bd638744d4b268dce6100496daa815fb5474f0a","source":{"kind":"arxiv","id":"hep-ph/0212160","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-ph/0212160","created_at":"2026-05-18T02:36:36Z"},{"alias_kind":"arxiv_version","alias_value":"hep-ph/0212160v2","created_at":"2026-05-18T02:36:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-ph/0212160","created_at":"2026-05-18T02:36:36Z"},{"alias_kind":"pith_short_12","alias_value":"DTQ72FGZR3FQ","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_16","alias_value":"DTQ72FGZR3FQLMU6","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_8","alias_value":"DTQ72FGZ","created_at":"2026-05-18T12:25:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2002:DTQ72FGZR3FQLMU6CS2XXVRYOR","target":"record","payload":{"canonical_record":{"source":{"id":"hep-ph/0212160","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"hep-ph","submitted_at":"2002-12-11T16:54:13Z","cross_cats_sorted":[],"title_canon_sha256":"cbbdab08a10f716a990646c26ccc9bf5b9d3ddadecd0ebb0ea7c8992943d00ae","abstract_canon_sha256":"d19c529eecdbbdab48b13f018c2f935756dd0c92d63f2d30dae1dcfdc7947bcf"},"schema_version":"1.0"},"canonical_sha256":"1ce1fd14d98ecb05b29e14b57bd638744d4b268dce6100496daa815fb5474f0a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:36:36.777038Z","signature_b64":"YDzVE5qONC7B1Wc/bIH4utv7U9SWxXMzHypOuVnRCev1+YD6gZlpmHKhsNoUH+dZSjjWgywf1bofbXOGi2B6CA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1ce1fd14d98ecb05b29e14b57bd638744d4b268dce6100496daa815fb5474f0a","last_reissued_at":"2026-05-18T02:36:36.776590Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:36:36.776590Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"hep-ph/0212160","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":"2026-05-18T02:36:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RueJaOrCJSXxWPvzzrlo9sVaYguuIecfTS3Cxt/5rS0ZDM6vJCiajGPfLqjNQ/c4YgSIZe4KjeEQvMAaqslUDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T12:42:22.710992Z"},"content_sha256":"56fab1389950fce9d14a9e2b4f16023b55e6508ebe81e5551881bfd95c4f7238","schema_version":"1.0","event_id":"sha256:56fab1389950fce9d14a9e2b4f16023b55e6508ebe81e5551881bfd95c4f7238"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2002:DTQ72FGZR3FQLMU6CS2XXVRYOR","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A New 5-Flavour LO Analysis and Parametrization of Parton Distributions in the Real Photon","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"A.Lorca (Granada U. & DESY Zeuthen), F.Cornet (Granada U.), M.Krawczyk (Warsaw U. & CERN), P.Jankowski (Warsaw U.)","submitted_at":"2002-12-11T16:54:13Z","abstract_excerpt":"New, radiatively generated, LO quark (u,d,s,c,b) and gluon densities in a real, unpolarized photon are presented. We perform a global 3-parameter fit, based on LO DGLAP evolution equations, to all available data for the structure function F2^gamma(x,Q^2). We adopt a new theoretical approach called ACOT(chi), originally introduced for the proton, to deal with the heavy-quark thresholds. This defines our basic model (CJKL model), which gives a very good description of the experimental data on F2^gamma(x,Q^2), for both Q^2 and x dependences. For comparison we perform a standard fit using the Fixe"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/0212160","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":"2026-05-18T02:36:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1xZxGtxGxt4S8ur3tg4GAzgDz8gKCVx4YVjh84Ob7gdruYpt+dfolb5qkIKjUn54kQyPxsOi/+rIfgyK6s7OCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T12:42:22.711347Z"},"content_sha256":"56f481fe074e0ed431e4164a9ab2ae55e29c48ab0e450f1902f14c08c4ba91f4","schema_version":"1.0","event_id":"sha256:56f481fe074e0ed431e4164a9ab2ae55e29c48ab0e450f1902f14c08c4ba91f4"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/DTQ72FGZR3FQLMU6CS2XXVRYOR/bundle.json","state_url":"https://pith.science/pith/DTQ72FGZR3FQLMU6CS2XXVRYOR/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/DTQ72FGZR3FQLMU6CS2XXVRYOR/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":"2026-06-01T12:42:22Z","links":{"resolver":"https://pith.science/pith/DTQ72FGZR3FQLMU6CS2XXVRYOR","bundle":"https://pith.science/pith/DTQ72FGZR3FQLMU6CS2XXVRYOR/bundle.json","state":"https://pith.science/pith/DTQ72FGZR3FQLMU6CS2XXVRYOR/state.json","well_known_bundle":"https://pith.science/.well-known/pith/DTQ72FGZR3FQLMU6CS2XXVRYOR/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2002:DTQ72FGZR3FQLMU6CS2XXVRYOR","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":"d19c529eecdbbdab48b13f018c2f935756dd0c92d63f2d30dae1dcfdc7947bcf","cross_cats_sorted":[],"license":"","primary_cat":"hep-ph","submitted_at":"2002-12-11T16:54:13Z","title_canon_sha256":"cbbdab08a10f716a990646c26ccc9bf5b9d3ddadecd0ebb0ea7c8992943d00ae"},"schema_version":"1.0","source":{"id":"hep-ph/0212160","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-ph/0212160","created_at":"2026-05-18T02:36:36Z"},{"alias_kind":"arxiv_version","alias_value":"hep-ph/0212160v2","created_at":"2026-05-18T02:36:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-ph/0212160","created_at":"2026-05-18T02:36:36Z"},{"alias_kind":"pith_short_12","alias_value":"DTQ72FGZR3FQ","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_16","alias_value":"DTQ72FGZR3FQLMU6","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_8","alias_value":"DTQ72FGZ","created_at":"2026-05-18T12:25:50Z"}],"graph_snapshots":[{"event_id":"sha256:56f481fe074e0ed431e4164a9ab2ae55e29c48ab0e450f1902f14c08c4ba91f4","target":"graph","created_at":"2026-05-18T02:36:36Z","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":"New, radiatively generated, LO quark (u,d,s,c,b) and gluon densities in a real, unpolarized photon are presented. We perform a global 3-parameter fit, based on LO DGLAP evolution equations, to all available data for the structure function F2^gamma(x,Q^2). We adopt a new theoretical approach called ACOT(chi), originally introduced for the proton, to deal with the heavy-quark thresholds. This defines our basic model (CJKL model), which gives a very good description of the experimental data on F2^gamma(x,Q^2), for both Q^2 and x dependences. For comparison we perform a standard fit using the Fixe","authors_text":"A.Lorca (Granada U. & DESY Zeuthen), F.Cornet (Granada U.), M.Krawczyk (Warsaw U. & CERN), P.Jankowski (Warsaw U.)","cross_cats":[],"headline":"","license":"","primary_cat":"hep-ph","submitted_at":"2002-12-11T16:54:13Z","title":"A New 5-Flavour LO Analysis and Parametrization of Parton Distributions in the Real Photon"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/0212160","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":"sha256:56fab1389950fce9d14a9e2b4f16023b55e6508ebe81e5551881bfd95c4f7238","target":"record","created_at":"2026-05-18T02:36:36Z","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":"d19c529eecdbbdab48b13f018c2f935756dd0c92d63f2d30dae1dcfdc7947bcf","cross_cats_sorted":[],"license":"","primary_cat":"hep-ph","submitted_at":"2002-12-11T16:54:13Z","title_canon_sha256":"cbbdab08a10f716a990646c26ccc9bf5b9d3ddadecd0ebb0ea7c8992943d00ae"},"schema_version":"1.0","source":{"id":"hep-ph/0212160","kind":"arxiv","version":2}},"canonical_sha256":"1ce1fd14d98ecb05b29e14b57bd638744d4b268dce6100496daa815fb5474f0a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1ce1fd14d98ecb05b29e14b57bd638744d4b268dce6100496daa815fb5474f0a","first_computed_at":"2026-05-18T02:36:36.776590Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:36:36.776590Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"YDzVE5qONC7B1Wc/bIH4utv7U9SWxXMzHypOuVnRCev1+YD6gZlpmHKhsNoUH+dZSjjWgywf1bofbXOGi2B6CA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:36:36.777038Z","signed_message":"canonical_sha256_bytes"},"source_id":"hep-ph/0212160","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:56fab1389950fce9d14a9e2b4f16023b55e6508ebe81e5551881bfd95c4f7238","sha256:56f481fe074e0ed431e4164a9ab2ae55e29c48ab0e450f1902f14c08c4ba91f4"],"state_sha256":"3c222a8f59736fc8317d38c433ea9694c0b69e7fd85deda512970e2ab5ad137d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"p96F2TYxiv9wLKy0FcfDd6eXGc+GjPlmjTsKMTG7P3lWy9My1fn+qKvbTt62SiLgXhICJ8w5Gc+Xs0yg+5tLBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T12:42:22.713194Z","bundle_sha256":"b0b7462bd4493fe53412531eedfc2e7ee29710822036e49afbe3c918f9f896a6"}}