{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:1998:EVOVSMTHAKRWR6G4VDG4AJZFHI","short_pith_number":"pith:EVOVSMTH","schema_version":"1.0","canonical_sha256":"255d59326702a368f8dca8cdc027253a07757a9cadde48c070e4e67a0a18b8b2","source":{"kind":"arxiv","id":"hep-ph/9806284","version":2},"attestation_state":"computed","paper":{"title":"Energy Dependence of the Pomeron Spin-Flip","license":"","headline":"","cross_cats":["nucl-th"],"primary_cat":"hep-ph","authors_text":"B. Povh (Heidelberg), B.Z. Kopeliovich","submitted_at":"1998-06-05T16:38:55Z","abstract_excerpt":"There is no theoretical reason to think that the spin-flip component of the Pomeron is zero. One can measure the spin-flip part using Coulomb-nuclear interference (CNI). Perturbative QCD calculations show that the spin-flip component is sensitive to the smallest quark separation in the proton, while the non-flip part probes the largest separation. According to HERA results on the proton structure function at very low x the energy dependence of the cross-section correlates with the size of the color dipole. Analysing the data from HERA we predict that the ratio of the spin-flip to non-flip ampl"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"hep-ph/9806284","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"hep-ph","submitted_at":"1998-06-05T16:38:55Z","cross_cats_sorted":["nucl-th"],"title_canon_sha256":"5fab5729b7994967150dfe75afc5911f54ec701f7a32bddb0e31a4473a0b0ee0","abstract_canon_sha256":"421a9455be1a21cb622af9043509328681f233c4454cf10cebf355bce565d04d"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:24:17.050165Z","signature_b64":"zFHbOX44h+rK3RiQhwu38mONFhLOtCVW8krePL80CrvstDTgqpt8fw0QeYFOeOA58Dy6YhyrfCdQFYP8UOQvCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"255d59326702a368f8dca8cdc027253a07757a9cadde48c070e4e67a0a18b8b2","last_reissued_at":"2026-05-18T04:24:17.049579Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:24:17.049579Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Energy Dependence of the Pomeron Spin-Flip","license":"","headline":"","cross_cats":["nucl-th"],"primary_cat":"hep-ph","authors_text":"B. Povh (Heidelberg), B.Z. Kopeliovich","submitted_at":"1998-06-05T16:38:55Z","abstract_excerpt":"There is no theoretical reason to think that the spin-flip component of the Pomeron is zero. One can measure the spin-flip part using Coulomb-nuclear interference (CNI). Perturbative QCD calculations show that the spin-flip component is sensitive to the smallest quark separation in the proton, while the non-flip part probes the largest separation. According to HERA results on the proton structure function at very low x the energy dependence of the cross-section correlates with the size of the color dipole. Analysing the data from HERA we predict that the ratio of the spin-flip to non-flip ampl"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/9806284","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"hep-ph/9806284","created_at":"2026-05-18T04:24:17.049660+00:00"},{"alias_kind":"arxiv_version","alias_value":"hep-ph/9806284v2","created_at":"2026-05-18T04:24:17.049660+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-ph/9806284","created_at":"2026-05-18T04:24:17.049660+00:00"},{"alias_kind":"pith_short_12","alias_value":"EVOVSMTHAKRW","created_at":"2026-05-18T12:25:49.038998+00:00"},{"alias_kind":"pith_short_16","alias_value":"EVOVSMTHAKRWR6G4","created_at":"2026-05-18T12:25:49.038998+00:00"},{"alias_kind":"pith_short_8","alias_value":"EVOVSMTH","created_at":"2026-05-18T12:25:49.038998+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/EVOVSMTHAKRWR6G4VDG4AJZFHI","json":"https://pith.science/pith/EVOVSMTHAKRWR6G4VDG4AJZFHI.json","graph_json":"https://pith.science/api/pith-number/EVOVSMTHAKRWR6G4VDG4AJZFHI/graph.json","events_json":"https://pith.science/api/pith-number/EVOVSMTHAKRWR6G4VDG4AJZFHI/events.json","paper":"https://pith.science/paper/EVOVSMTH"},"agent_actions":{"view_html":"https://pith.science/pith/EVOVSMTHAKRWR6G4VDG4AJZFHI","download_json":"https://pith.science/pith/EVOVSMTHAKRWR6G4VDG4AJZFHI.json","view_paper":"https://pith.science/paper/EVOVSMTH","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=hep-ph/9806284&json=true","fetch_graph":"https://pith.science/api/pith-number/EVOVSMTHAKRWR6G4VDG4AJZFHI/graph.json","fetch_events":"https://pith.science/api/pith-number/EVOVSMTHAKRWR6G4VDG4AJZFHI/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/EVOVSMTHAKRWR6G4VDG4AJZFHI/action/timestamp_anchor","attest_storage":"https://pith.science/pith/EVOVSMTHAKRWR6G4VDG4AJZFHI/action/storage_attestation","attest_author":"https://pith.science/pith/EVOVSMTHAKRWR6G4VDG4AJZFHI/action/author_attestation","sign_citation":"https://pith.science/pith/EVOVSMTHAKRWR6G4VDG4AJZFHI/action/citation_signature","submit_replication":"https://pith.science/pith/EVOVSMTHAKRWR6G4VDG4AJZFHI/action/replication_record"}},"created_at":"2026-05-18T04:24:17.049660+00:00","updated_at":"2026-05-18T04:24:17.049660+00:00"}