{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:2YOQALX6ZDCJPOH5QCCMFTVGIY","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":"4fc37397d36df569091e8f0bdaf64344815d547a3ac6310abc7786599fce2cdc","cross_cats_sorted":["hep-ex","hep-ph","nucl-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2009-12-22T19:26:42Z","title_canon_sha256":"9116bbed7affc31f80a07ebfc8b6dd98351887b860cde8f4cdc3d67ade89dbf6"},"schema_version":"1.0","source":{"id":"0912.4494","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0912.4494","created_at":"2026-07-04T17:19:12Z"},{"alias_kind":"arxiv_version","alias_value":"0912.4494v1","created_at":"2026-07-04T17:19:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0912.4494","created_at":"2026-07-04T17:19:12Z"},{"alias_kind":"pith_short_12","alias_value":"2YOQALX6ZDCJ","created_at":"2026-07-04T17:19:12Z"},{"alias_kind":"pith_short_16","alias_value":"2YOQALX6ZDCJPOH5","created_at":"2026-07-04T17:19:12Z"},{"alias_kind":"pith_short_8","alias_value":"2YOQALX6","created_at":"2026-07-04T17:19:12Z"}],"graph_snapshots":[{"event_id":"sha256:7e708e9e09ef471c35567ff85abe0145552c5a82a4c693087c3dd6bfb546ad13","target":"graph","created_at":"2026-07-04T17:19:12Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/0912.4494/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present an unquenched quark model for baryons in which the effects of the quark-antiquark pairs (up, down and strange) are taken into account in an explicit form via a microscopic, QCD-inspired, quark-antiquark creation mechanism. In the present approach, the contribution of the quark-antiquark pairs can be studied for any inital baryon and for any flavor of the pairs. It is shown that, while the inclusion of quark-antiquark pairs does not affect the baryon magnetic moments, it leads to a sizeable contribution of the orbital angular momentum to the spin of the proton and the Lambda hyperon.","authors_text":"E. Santopinto, R. Bijker","cross_cats":["hep-ex","hep-ph","nucl-ex"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2009-12-22T19:26:42Z","title":"Unquenched quark model for baryons: magnetic moments, spins and orbital angular momenta"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0912.4494","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":"sha256:9e18618d66c8c9c16cfdc01cc51a3f9f10a8f72a0f50e235951d2a6c442b24b7","target":"record","created_at":"2026-07-04T17:19:12Z","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":"4fc37397d36df569091e8f0bdaf64344815d547a3ac6310abc7786599fce2cdc","cross_cats_sorted":["hep-ex","hep-ph","nucl-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2009-12-22T19:26:42Z","title_canon_sha256":"9116bbed7affc31f80a07ebfc8b6dd98351887b860cde8f4cdc3d67ade89dbf6"},"schema_version":"1.0","source":{"id":"0912.4494","kind":"arxiv","version":1}},"canonical_sha256":"d61d002efec8c497b8fd8084c2cea64623795d87da02d6023d2b6e27b1ae98b7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d61d002efec8c497b8fd8084c2cea64623795d87da02d6023d2b6e27b1ae98b7","first_computed_at":"2026-07-04T17:19:12.278111Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T17:19:12.278111Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"6khg3OYAi3JKr7WWu1EGcLlHo0SvHTwP0zE25uBekcZlGZd97oY2BvayOCzMAQJdEfbA5RFmQUHiFVvg13xFBA==","signature_status":"signed_v1","signed_at":"2026-07-04T17:19:12.278535Z","signed_message":"canonical_sha256_bytes"},"source_id":"0912.4494","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9e18618d66c8c9c16cfdc01cc51a3f9f10a8f72a0f50e235951d2a6c442b24b7","sha256:7e708e9e09ef471c35567ff85abe0145552c5a82a4c693087c3dd6bfb546ad13"],"state_sha256":"cc081583bda3644466389b19a03b777b2b11c5c25cffb52f1bc940ab00c2e1a4"}