{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2000:ZSUYXRKCSIYZ42PB6JSA34FV6I","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":"692bf91d10650ab4ba14ba3c4a4be0dc19eaf82e1330202881c8819c22ce4a43","cross_cats_sorted":[],"license":"","primary_cat":"nucl-ex","submitted_at":"2000-10-23T12:37:31Z","title_canon_sha256":"0b5db7ef24d91c75d43a59a9da45a8a8f9e401db5d9e61e18e8b4cea0516fb66"},"schema_version":"1.0","source":{"id":"nucl-ex/0010012","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"nucl-ex/0010012","created_at":"2026-05-18T01:38:17Z"},{"alias_kind":"arxiv_version","alias_value":"nucl-ex/0010012v1","created_at":"2026-05-18T01:38:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.nucl-ex/0010012","created_at":"2026-05-18T01:38:17Z"},{"alias_kind":"pith_short_12","alias_value":"ZSUYXRKCSIYZ","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_16","alias_value":"ZSUYXRKCSIYZ42PB","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_8","alias_value":"ZSUYXRKC","created_at":"2026-05-18T12:25:50Z"}],"graph_snapshots":[{"event_id":"sha256:8fea9d4b0914134bf3e6470ced8c9698af071915a2910fbc3210bb4166c5d751","target":"graph","created_at":"2026-05-18T01:38:17Z","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":"Experimental data on the production of kaons and antikaons in heavy ion collisions at relativistic energies are reviewed with respect to in-medium effects. The $K^-/K^+$ ratios measured in nucleus-nucleus collisions are 1 - 2 orders of magnitude larger than in proton-proton collisions. The azimuthal angle distributions of $K^+$ mesons indicate a repulsive kaon-nucleon potential. Microscopic transport calculations consistently explain both the yields and the emission patterns of kaons and antikaons when assuming that their properties are modified in dense nuclear matter. The $K^+$ production ex","authors_text":"P. Senger","cross_cats":[],"headline":"","license":"","primary_cat":"nucl-ex","submitted_at":"2000-10-23T12:37:31Z","title":"Strange mesons in dense nuclear matter"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"nucl-ex/0010012","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:b9680dfb53efc0dd8aa9d21df9bd954e6498168cc00118d17d4553d4eb35e49b","target":"record","created_at":"2026-05-18T01:38:17Z","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":"692bf91d10650ab4ba14ba3c4a4be0dc19eaf82e1330202881c8819c22ce4a43","cross_cats_sorted":[],"license":"","primary_cat":"nucl-ex","submitted_at":"2000-10-23T12:37:31Z","title_canon_sha256":"0b5db7ef24d91c75d43a59a9da45a8a8f9e401db5d9e61e18e8b4cea0516fb66"},"schema_version":"1.0","source":{"id":"nucl-ex/0010012","kind":"arxiv","version":1}},"canonical_sha256":"cca98bc54292319e69e1f2640df0b5f20979a18eccd29b9019427584b9419fcd","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cca98bc54292319e69e1f2640df0b5f20979a18eccd29b9019427584b9419fcd","first_computed_at":"2026-05-18T01:38:17.521158Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:38:17.521158Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"m3rbTj9LOoNy5d2tPTyS3vQ192U9C9uFaIQbE+9mQV3JyBp0BvV+KAnkUtqQmJE7mColssL2V4j3q+yQfzb8Aw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:38:17.521638Z","signed_message":"canonical_sha256_bytes"},"source_id":"nucl-ex/0010012","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b9680dfb53efc0dd8aa9d21df9bd954e6498168cc00118d17d4553d4eb35e49b","sha256:8fea9d4b0914134bf3e6470ced8c9698af071915a2910fbc3210bb4166c5d751"],"state_sha256":"f03254d0bfa5345013bda80250f071baef1a33318d3c85ac0377b384a5b30c58"}