{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2025:6IWDX7VGSW44YKO6ZBBQ6QFIRI","short_pith_number":"pith:6IWDX7VG","schema_version":"1.0","canonical_sha256":"f22c3bfea695b9cc29dec8430f40a88a0a3240f8d134a40d659dc7375b909bed","source":{"kind":"arxiv","id":"2507.04989","version":1},"attestation_state":"computed","paper":{"title":"Spin alignment of vector mesons in heavy-ion collision","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["nucl-th"],"primary_cat":"hep-ph","authors_text":"Qun Wang, Xin-li Sheng","submitted_at":"2025-07-07T13:29:07Z","abstract_excerpt":"We give a brief review on the spin alignment induced by the strong field and the shear-stress tensor. In experiments, a significant positive deviation from 1/3 is observed for the $\\phi$ meson, which can be explained by the anisotropy of the strong field fluctuation in the meson's rest frame, while the anisotropy is mainly a consequence of the motion of meson relative to the quark-gluon plasma. On the other hand, the shear-induced spin alignment is of the order $10^{-4}\\sim10^{-5}$ if the magnitude of thermal shear tensor is $10^{-2}$."},"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":"2507.04989","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ph","submitted_at":"2025-07-07T13:29:07Z","cross_cats_sorted":["nucl-th"],"title_canon_sha256":"9d30289627c3da6de549c7a2ab6de54896a447bdea5e84bb99c38e291e70475d","abstract_canon_sha256":"f38539f20ef51705cc053aaea24a28006cb9e026abd809d2a3d2b45501c08449"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:33:07.632393Z","signature_b64":"ApHDWlANh3TIiraADWwrTLqX6K829vgwp4LdhDGeT3UoqwsDakvx69FLWdoIsbt0Dbt8sk3lKKjUf5ILfBLXBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f22c3bfea695b9cc29dec8430f40a88a0a3240f8d134a40d659dc7375b909bed","last_reissued_at":"2026-07-05T11:33:07.631933Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:33:07.631933Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Spin alignment of vector mesons in heavy-ion collision","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["nucl-th"],"primary_cat":"hep-ph","authors_text":"Qun Wang, Xin-li Sheng","submitted_at":"2025-07-07T13:29:07Z","abstract_excerpt":"We give a brief review on the spin alignment induced by the strong field and the shear-stress tensor. In experiments, a significant positive deviation from 1/3 is observed for the $\\phi$ meson, which can be explained by the anisotropy of the strong field fluctuation in the meson's rest frame, while the anisotropy is mainly a consequence of the motion of meson relative to the quark-gluon plasma. On the other hand, the shear-induced spin alignment is of the order $10^{-4}\\sim10^{-5}$ if the magnitude of thermal shear tensor is $10^{-2}$."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2507.04989","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/2507.04989/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":"2507.04989","created_at":"2026-07-05T11:33:07.632006+00:00"},{"alias_kind":"arxiv_version","alias_value":"2507.04989v1","created_at":"2026-07-05T11:33:07.632006+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2507.04989","created_at":"2026-07-05T11:33:07.632006+00:00"},{"alias_kind":"pith_short_12","alias_value":"6IWDX7VGSW44","created_at":"2026-07-05T11:33:07.632006+00:00"},{"alias_kind":"pith_short_16","alias_value":"6IWDX7VGSW44YKO6","created_at":"2026-07-05T11:33:07.632006+00:00"},{"alias_kind":"pith_short_8","alias_value":"6IWDX7VG","created_at":"2026-07-05T11:33:07.632006+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/6IWDX7VGSW44YKO6ZBBQ6QFIRI","json":"https://pith.science/pith/6IWDX7VGSW44YKO6ZBBQ6QFIRI.json","graph_json":"https://pith.science/api/pith-number/6IWDX7VGSW44YKO6ZBBQ6QFIRI/graph.json","events_json":"https://pith.science/api/pith-number/6IWDX7VGSW44YKO6ZBBQ6QFIRI/events.json","paper":"https://pith.science/paper/6IWDX7VG"},"agent_actions":{"view_html":"https://pith.science/pith/6IWDX7VGSW44YKO6ZBBQ6QFIRI","download_json":"https://pith.science/pith/6IWDX7VGSW44YKO6ZBBQ6QFIRI.json","view_paper":"https://pith.science/paper/6IWDX7VG","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2507.04989&json=true","fetch_graph":"https://pith.science/api/pith-number/6IWDX7VGSW44YKO6ZBBQ6QFIRI/graph.json","fetch_events":"https://pith.science/api/pith-number/6IWDX7VGSW44YKO6ZBBQ6QFIRI/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/6IWDX7VGSW44YKO6ZBBQ6QFIRI/action/timestamp_anchor","attest_storage":"https://pith.science/pith/6IWDX7VGSW44YKO6ZBBQ6QFIRI/action/storage_attestation","attest_author":"https://pith.science/pith/6IWDX7VGSW44YKO6ZBBQ6QFIRI/action/author_attestation","sign_citation":"https://pith.science/pith/6IWDX7VGSW44YKO6ZBBQ6QFIRI/action/citation_signature","submit_replication":"https://pith.science/pith/6IWDX7VGSW44YKO6ZBBQ6QFIRI/action/replication_record"}},"created_at":"2026-07-05T11:33:07.632006+00:00","updated_at":"2026-07-05T11:33:07.632006+00:00"}