{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2026:QHYDFQ2ZGYCQFCXCKV5FEBDC4U","short_pith_number":"pith:QHYDFQ2Z","schema_version":"1.0","canonical_sha256":"81f032c3593605028ae2557a520462e52733aec51cb4b99c8562b25f2ae45c03","source":{"kind":"arxiv","id":"2605.23615","version":1},"attestation_state":"computed","paper":{"title":"Observation of Entanglement Enabled Spin-Interference in the Drell-S\\\"oding Process in Au+Au Ultraperipheral Collisions at RHIC","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","headline":"","cross_cats":["nucl-th"],"primary_cat":"nucl-ex","authors_text":"The STAR Collaboration","submitted_at":"2026-05-22T13:23:06Z","abstract_excerpt":"We report a measurement of the Drell-S\\\"oding $\\pi^+ \\pi^-$ production in Au + Au ultraperipheral collisions at a center-of-mass energy per nucleon pair $\\sqrt{s_{NN}} = 200~\\mathrm{GeV}$ using the STAR detector. For the first time, the Entanglement Enabled Spin-Interference (EESI) effect is observed in the Drell-S\\\"oding process through the amplitude $A_{2\\Delta\\phi}$ of the $\\cos(2\\Delta\\phi)$ modulation. The measured $A_{2\\Delta\\phi}$ exhibits no significant dependence on the invariant mass $M_{\\pi^+ \\pi^-}$. An enhancement of three standard deviations is observed for the Drell-S\\\"oding pro"},"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":"2605.23615","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"nucl-ex","submitted_at":"2026-05-22T13:23:06Z","cross_cats_sorted":["nucl-th"],"title_canon_sha256":"ff4afd4b7870b4821a8c4ff9e593d560fac299c068e177fcc5bf35586c1efcec","abstract_canon_sha256":"f257b6d92087eba547996559f15aa80584c843abd17b9b23d13098888955a2c8"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-25T02:02:22.175224Z","signature_b64":"3kHmj0YTxcfT7ylKomsv9rXDEr8KxKoSHEe9QjMJF+iWoGCx0Nmhr9PNdehRq82cSoBMGky3AwYij5/9VjV0Ag==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"81f032c3593605028ae2557a520462e52733aec51cb4b99c8562b25f2ae45c03","last_reissued_at":"2026-05-25T02:02:22.174486Z","signature_status":"signed_v1","first_computed_at":"2026-05-25T02:02:22.174486Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Observation of Entanglement Enabled Spin-Interference in the Drell-S\\\"oding Process in Au+Au Ultraperipheral Collisions at RHIC","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","headline":"","cross_cats":["nucl-th"],"primary_cat":"nucl-ex","authors_text":"The STAR Collaboration","submitted_at":"2026-05-22T13:23:06Z","abstract_excerpt":"We report a measurement of the Drell-S\\\"oding $\\pi^+ \\pi^-$ production in Au + Au ultraperipheral collisions at a center-of-mass energy per nucleon pair $\\sqrt{s_{NN}} = 200~\\mathrm{GeV}$ using the STAR detector. For the first time, the Entanglement Enabled Spin-Interference (EESI) effect is observed in the Drell-S\\\"oding process through the amplitude $A_{2\\Delta\\phi}$ of the $\\cos(2\\Delta\\phi)$ modulation. The measured $A_{2\\Delta\\phi}$ exhibits no significant dependence on the invariant mass $M_{\\pi^+ \\pi^-}$. An enhancement of three standard deviations is observed for the Drell-S\\\"oding pro"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.23615","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2605.23615/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2605.23615","created_at":"2026-05-25T02:02:22.174604+00:00"},{"alias_kind":"arxiv_version","alias_value":"2605.23615v1","created_at":"2026-05-25T02:02:22.174604+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.23615","created_at":"2026-05-25T02:02:22.174604+00:00"},{"alias_kind":"pith_short_12","alias_value":"QHYDFQ2ZGYCQ","created_at":"2026-05-25T02:02:22.174604+00:00"},{"alias_kind":"pith_short_16","alias_value":"QHYDFQ2ZGYCQFCXC","created_at":"2026-05-25T02:02:22.174604+00:00"},{"alias_kind":"pith_short_8","alias_value":"QHYDFQ2Z","created_at":"2026-05-25T02:02:22.174604+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/QHYDFQ2ZGYCQFCXCKV5FEBDC4U","json":"https://pith.science/pith/QHYDFQ2ZGYCQFCXCKV5FEBDC4U.json","graph_json":"https://pith.science/api/pith-number/QHYDFQ2ZGYCQFCXCKV5FEBDC4U/graph.json","events_json":"https://pith.science/api/pith-number/QHYDFQ2ZGYCQFCXCKV5FEBDC4U/events.json","paper":"https://pith.science/paper/QHYDFQ2Z"},"agent_actions":{"view_html":"https://pith.science/pith/QHYDFQ2ZGYCQFCXCKV5FEBDC4U","download_json":"https://pith.science/pith/QHYDFQ2ZGYCQFCXCKV5FEBDC4U.json","view_paper":"https://pith.science/paper/QHYDFQ2Z","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2605.23615&json=true","fetch_graph":"https://pith.science/api/pith-number/QHYDFQ2ZGYCQFCXCKV5FEBDC4U/graph.json","fetch_events":"https://pith.science/api/pith-number/QHYDFQ2ZGYCQFCXCKV5FEBDC4U/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/QHYDFQ2ZGYCQFCXCKV5FEBDC4U/action/timestamp_anchor","attest_storage":"https://pith.science/pith/QHYDFQ2ZGYCQFCXCKV5FEBDC4U/action/storage_attestation","attest_author":"https://pith.science/pith/QHYDFQ2ZGYCQFCXCKV5FEBDC4U/action/author_attestation","sign_citation":"https://pith.science/pith/QHYDFQ2ZGYCQFCXCKV5FEBDC4U/action/citation_signature","submit_replication":"https://pith.science/pith/QHYDFQ2ZGYCQFCXCKV5FEBDC4U/action/replication_record"}},"created_at":"2026-05-25T02:02:22.174604+00:00","updated_at":"2026-05-25T02:02:22.174604+00:00"}