{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1997:SIZNKUYAQCLYUPOAO5KG6W6Q3L","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":"902654f50318576430bc1f9fba94da073832c2be2634e32e82b0ee3bf49de1b1","cross_cats_sorted":["hep-ph"],"license":"","primary_cat":"nucl-th","submitted_at":"1997-02-06T20:04:49Z","title_canon_sha256":"20d5324887a1b9132ed2aa9318c7229014b9a93d5547586ddcc4f00107936d75"},"schema_version":"1.0","source":{"id":"nucl-th/9702015","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"nucl-th/9702015","created_at":"2026-05-18T04:35:15Z"},{"alias_kind":"arxiv_version","alias_value":"nucl-th/9702015v2","created_at":"2026-05-18T04:35:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.nucl-th/9702015","created_at":"2026-05-18T04:35:15Z"},{"alias_kind":"pith_short_12","alias_value":"SIZNKUYAQCLY","created_at":"2026-05-18T12:25:48Z"},{"alias_kind":"pith_short_16","alias_value":"SIZNKUYAQCLYUPOA","created_at":"2026-05-18T12:25:48Z"},{"alias_kind":"pith_short_8","alias_value":"SIZNKUYA","created_at":"2026-05-18T12:25:48Z"}],"graph_snapshots":[{"event_id":"sha256:53815d2fdc3c56685b51b6b96aafd8840d99f1a51b805741c07e577e84e5f6e0","target":"graph","created_at":"2026-05-18T04:35:15Z","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 contributions of direct knockout processes, in addition to the diffractive production and one-pion-exchange processes associated with the phi-rho-pi and phi-gamma-pi couplings, to the polarization observables of the phi photoproduction from proton are calculated. We make use of Pomeron-photon analogy and a relativistic harmonic oscillator quark model. We find that some of the double polarization observables are very sensitive to a possible (s s-bar) admixture in the proton. It arises from the difference in the spin structures of the three different amplitudes. This suggests that such measu","authors_text":"Alexander I. Titov, Shin Nan Yang, Yongseok Oh","cross_cats":["hep-ph"],"headline":"","license":"","primary_cat":"nucl-th","submitted_at":"1997-02-06T20:04:49Z","title":"Polarization Observables in Phi Meson Photoproduction and the Strangeness Content of the Proton"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"nucl-th/9702015","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":"sha256:39dd665efcbb66132a1b31540297655869adbd75de3de286b603bf13b8135d3a","target":"record","created_at":"2026-05-18T04:35:15Z","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":"902654f50318576430bc1f9fba94da073832c2be2634e32e82b0ee3bf49de1b1","cross_cats_sorted":["hep-ph"],"license":"","primary_cat":"nucl-th","submitted_at":"1997-02-06T20:04:49Z","title_canon_sha256":"20d5324887a1b9132ed2aa9318c7229014b9a93d5547586ddcc4f00107936d75"},"schema_version":"1.0","source":{"id":"nucl-th/9702015","kind":"arxiv","version":2}},"canonical_sha256":"9232d5530080978a3dc077546f5bd0daec166881ee68d80b7a34668b1c63a059","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9232d5530080978a3dc077546f5bd0daec166881ee68d80b7a34668b1c63a059","first_computed_at":"2026-05-18T04:35:15.283030Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:35:15.283030Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"A2tWUhLTvo+tIbo88WEeepOTwnYq2xQCp3jB6GSeyz2r6RLS2C9qy5oxpr/OkQ2AFz9DoGMs8iYxckxSC7yPDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T04:35:15.283494Z","signed_message":"canonical_sha256_bytes"},"source_id":"nucl-th/9702015","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:39dd665efcbb66132a1b31540297655869adbd75de3de286b603bf13b8135d3a","sha256:53815d2fdc3c56685b51b6b96aafd8840d99f1a51b805741c07e577e84e5f6e0"],"state_sha256":"c91671488e048cbf8382c8e93136700688c0294fdf76e2c30c8da6c6ff222e9b"}