{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:1992:I3OPQIYIJM2CIIDZ3BCH5UASSS","short_pith_number":"pith:I3OPQIYI","canonical_record":{"source":{"id":"hep-ph/9208208","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"hep-ph","submitted_at":"1992-08-05T15:53:20Z","cross_cats_sorted":[],"title_canon_sha256":"6ce346eec8924b4961db19ebdc2e44d798a8d5ae44035f6ad25233f296efd1c0","abstract_canon_sha256":"65dc7b1fa1c71d1f1de74c7a34f607a7deeb716b58d5f20cb7bdf6f523e5a9ab"},"schema_version":"1.0"},"canonical_sha256":"46dcf823084b34242079d8447ed01294a7ec02d06bc9d16a8cdb48591c9ddc39","source":{"kind":"arxiv","id":"hep-ph/9208208","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-ph/9208208","created_at":"2026-05-18T01:39:02Z"},{"alias_kind":"arxiv_version","alias_value":"hep-ph/9208208v1","created_at":"2026-05-18T01:39:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-ph/9208208","created_at":"2026-05-18T01:39:02Z"},{"alias_kind":"pith_short_12","alias_value":"I3OPQIYIJM2C","created_at":"2026-05-18T12:25:47Z"},{"alias_kind":"pith_short_16","alias_value":"I3OPQIYIJM2CIIDZ","created_at":"2026-05-18T12:25:47Z"},{"alias_kind":"pith_short_8","alias_value":"I3OPQIYI","created_at":"2026-05-18T12:25:47Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:1992:I3OPQIYIJM2CIIDZ3BCH5UASSS","target":"record","payload":{"canonical_record":{"source":{"id":"hep-ph/9208208","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"hep-ph","submitted_at":"1992-08-05T15:53:20Z","cross_cats_sorted":[],"title_canon_sha256":"6ce346eec8924b4961db19ebdc2e44d798a8d5ae44035f6ad25233f296efd1c0","abstract_canon_sha256":"65dc7b1fa1c71d1f1de74c7a34f607a7deeb716b58d5f20cb7bdf6f523e5a9ab"},"schema_version":"1.0"},"canonical_sha256":"46dcf823084b34242079d8447ed01294a7ec02d06bc9d16a8cdb48591c9ddc39","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:39:02.174811Z","signature_b64":"1huB3DDLiHvd+Gy6JvGrE2YhucR3G9egDRB670U1qQEpr4hSr4fIPq6NVT/nPRsMRvODLdAKDZRwIqkFwhZaAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"46dcf823084b34242079d8447ed01294a7ec02d06bc9d16a8cdb48591c9ddc39","last_reissued_at":"2026-05-18T01:39:02.174093Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:39:02.174093Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"hep-ph/9208208","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":"2026-05-18T01:39:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"olZwg7oAUoPJKDgNEFAO/Rns996CqRouQqApZNNyI8nNxxaJEzFwHgR4SIWmj2DV4TDuWCZm/Ha517HsMh7ODw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T22:39:23.282902Z"},"content_sha256":"4f66c485a5d24260122b6a769b278ef4b042283722cdadf1f277cd39ba2d12ee","schema_version":"1.0","event_id":"sha256:4f66c485a5d24260122b6a769b278ef4b042283722cdadf1f277cd39ba2d12ee"},{"event_type":"graph_snapshot","subject_pith_number":"pith:1992:I3OPQIYIJM2CIIDZ3BCH5UASSS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Can Polarised Drell-Yan Shed More Light On The Proton Spin?","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Prakash Mathews, V. Ravindran","submitted_at":"1992-08-05T15:53:20Z","abstract_excerpt":"We analyse polarised Drell-Yan process using the factorisation method and derive operator definitions for polarised parton distribution functions. We demonstrate that a factorisation analogous to that in the unpolarised Drell-Yan case holds in this process. We study the leading order gluonic contribution to the first moment of polarised Drell-Yan function and show that it is consistent with results obtained from polarised deep inelastic scattering."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/9208208","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":"2026-05-18T01:39:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Gaog7Y31t6DJbgBAelvvVhBYHl/ep9n1P4j11ildqG8dPvg+Q8L1ECEbTDyS7bH4VwFLEslK9VB9wN2GSRrSBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T22:39:23.283260Z"},"content_sha256":"ae89ebcc0228e9ecc9b0185b644ab243fe5ccd48e002e23905bc18bd5b5b0a70","schema_version":"1.0","event_id":"sha256:ae89ebcc0228e9ecc9b0185b644ab243fe5ccd48e002e23905bc18bd5b5b0a70"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/I3OPQIYIJM2CIIDZ3BCH5UASSS/bundle.json","state_url":"https://pith.science/pith/I3OPQIYIJM2CIIDZ3BCH5UASSS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/I3OPQIYIJM2CIIDZ3BCH5UASSS/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":"2026-06-01T22:39:23Z","links":{"resolver":"https://pith.science/pith/I3OPQIYIJM2CIIDZ3BCH5UASSS","bundle":"https://pith.science/pith/I3OPQIYIJM2CIIDZ3BCH5UASSS/bundle.json","state":"https://pith.science/pith/I3OPQIYIJM2CIIDZ3BCH5UASSS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/I3OPQIYIJM2CIIDZ3BCH5UASSS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1992:I3OPQIYIJM2CIIDZ3BCH5UASSS","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":"65dc7b1fa1c71d1f1de74c7a34f607a7deeb716b58d5f20cb7bdf6f523e5a9ab","cross_cats_sorted":[],"license":"","primary_cat":"hep-ph","submitted_at":"1992-08-05T15:53:20Z","title_canon_sha256":"6ce346eec8924b4961db19ebdc2e44d798a8d5ae44035f6ad25233f296efd1c0"},"schema_version":"1.0","source":{"id":"hep-ph/9208208","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-ph/9208208","created_at":"2026-05-18T01:39:02Z"},{"alias_kind":"arxiv_version","alias_value":"hep-ph/9208208v1","created_at":"2026-05-18T01:39:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-ph/9208208","created_at":"2026-05-18T01:39:02Z"},{"alias_kind":"pith_short_12","alias_value":"I3OPQIYIJM2C","created_at":"2026-05-18T12:25:47Z"},{"alias_kind":"pith_short_16","alias_value":"I3OPQIYIJM2CIIDZ","created_at":"2026-05-18T12:25:47Z"},{"alias_kind":"pith_short_8","alias_value":"I3OPQIYI","created_at":"2026-05-18T12:25:47Z"}],"graph_snapshots":[{"event_id":"sha256:ae89ebcc0228e9ecc9b0185b644ab243fe5ccd48e002e23905bc18bd5b5b0a70","target":"graph","created_at":"2026-05-18T01:39:02Z","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":"We analyse polarised Drell-Yan process using the factorisation method and derive operator definitions for polarised parton distribution functions. We demonstrate that a factorisation analogous to that in the unpolarised Drell-Yan case holds in this process. We study the leading order gluonic contribution to the first moment of polarised Drell-Yan function and show that it is consistent with results obtained from polarised deep inelastic scattering.","authors_text":"Prakash Mathews, V. Ravindran","cross_cats":[],"headline":"","license":"","primary_cat":"hep-ph","submitted_at":"1992-08-05T15:53:20Z","title":"Can Polarised Drell-Yan Shed More Light On The Proton Spin?"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/9208208","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":"sha256:4f66c485a5d24260122b6a769b278ef4b042283722cdadf1f277cd39ba2d12ee","target":"record","created_at":"2026-05-18T01:39:02Z","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":"65dc7b1fa1c71d1f1de74c7a34f607a7deeb716b58d5f20cb7bdf6f523e5a9ab","cross_cats_sorted":[],"license":"","primary_cat":"hep-ph","submitted_at":"1992-08-05T15:53:20Z","title_canon_sha256":"6ce346eec8924b4961db19ebdc2e44d798a8d5ae44035f6ad25233f296efd1c0"},"schema_version":"1.0","source":{"id":"hep-ph/9208208","kind":"arxiv","version":1}},"canonical_sha256":"46dcf823084b34242079d8447ed01294a7ec02d06bc9d16a8cdb48591c9ddc39","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"46dcf823084b34242079d8447ed01294a7ec02d06bc9d16a8cdb48591c9ddc39","first_computed_at":"2026-05-18T01:39:02.174093Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:39:02.174093Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"1huB3DDLiHvd+Gy6JvGrE2YhucR3G9egDRB670U1qQEpr4hSr4fIPq6NVT/nPRsMRvODLdAKDZRwIqkFwhZaAw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:39:02.174811Z","signed_message":"canonical_sha256_bytes"},"source_id":"hep-ph/9208208","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4f66c485a5d24260122b6a769b278ef4b042283722cdadf1f277cd39ba2d12ee","sha256:ae89ebcc0228e9ecc9b0185b644ab243fe5ccd48e002e23905bc18bd5b5b0a70"],"state_sha256":"85cb43aafe3241bcf79b792b361c8db083f080d2376ccc7776dd12c7f00a510a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1NAQ3m8BwhjdF74d3VD8GqekeThbZoo1l0+32uRbUaKTHsv0AEI3ys5uc/7UjZhWaK4uzVSpXb0idVXqm/utBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T22:39:23.285275Z","bundle_sha256":"b20522d8c39544a9032eb25c9cc5ec1584a0159041aa5e62cf7b6951325504b6"}}