{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2005:2ILKDMOJWXBAUOVUUBIMZA47T5","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":"008d1cf2e360971d4f9a20edbc9da714757c4cb12eab0ad18bd93362dc82e289","cross_cats_sorted":["nucl-ex"],"license":"","primary_cat":"nucl-th","submitted_at":"2005-12-17T11:44:56Z","title_canon_sha256":"01e63ace685b991313eabf517be86c79236fe7e919887e67f32615d2c815fc51"},"schema_version":"1.0","source":{"id":"nucl-th/0512067","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"nucl-th/0512067","created_at":"2026-07-04T15:20:03Z"},{"alias_kind":"arxiv_version","alias_value":"nucl-th/0512067v3","created_at":"2026-07-04T15:20:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.nucl-th/0512067","created_at":"2026-07-04T15:20:03Z"},{"alias_kind":"pith_short_12","alias_value":"2ILKDMOJWXBA","created_at":"2026-07-04T15:20:03Z"},{"alias_kind":"pith_short_16","alias_value":"2ILKDMOJWXBAUOVU","created_at":"2026-07-04T15:20:03Z"},{"alias_kind":"pith_short_8","alias_value":"2ILKDMOJ","created_at":"2026-07-04T15:20:03Z"}],"graph_snapshots":[{"event_id":"sha256:00862e310a5f97badab2e673490715236debec577ab3ac94884f5c0f4b1674c1","target":"graph","created_at":"2026-07-04T15:20:03Z","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/nucl-th/0512067/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Based on an isospin- and momentum-dependent hadronic transport model IBUU04, effects of the nuclear symmetry energy on the single and double pi^{-}/pi^{+}ratios in central reactions of ^{132}Sn+^{124}Sn and ^{112}Sn+^{112}Sn at a beam energy of 400 MeV/nucleon are studied. It is found that around the Coulomb peak of the single pi^{-}/pi^{+} ratio the double pi^{-}/pi^{+} ratio taken from the two isotopic reactions retains about the same sensitivity to the density dependence of nuclear symmetry energy. Because the double pi^{-}/pi^{+}ratio can reduce significantly the systematic errors, it is t","authors_text":"Bao-An Li, Gao-Chan Yong, Lie-Wen Chen, Wei Zuo","cross_cats":["nucl-ex"],"headline":"","license":"","primary_cat":"nucl-th","submitted_at":"2005-12-17T11:44:56Z","title":"Single and double pi^{-}/pi^{+} ratios in heavy-ion reactions as probes of the high-density behavior of the nuclear symmetry energy"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"nucl-th/0512067","kind":"arxiv","version":3},"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":"sha256:61fc2fa89cab5a1d32cdfe4e966cc4a2bd9b8efbf84daca8897b3d7103e3f6d2","target":"record","created_at":"2026-07-04T15:20:03Z","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":"008d1cf2e360971d4f9a20edbc9da714757c4cb12eab0ad18bd93362dc82e289","cross_cats_sorted":["nucl-ex"],"license":"","primary_cat":"nucl-th","submitted_at":"2005-12-17T11:44:56Z","title_canon_sha256":"01e63ace685b991313eabf517be86c79236fe7e919887e67f32615d2c815fc51"},"schema_version":"1.0","source":{"id":"nucl-th/0512067","kind":"arxiv","version":3}},"canonical_sha256":"d216a1b1c9b5c20a3ab4a050cc839f9f54d75cdb0c9ad94047f7c5517b6363c8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d216a1b1c9b5c20a3ab4a050cc839f9f54d75cdb0c9ad94047f7c5517b6363c8","first_computed_at":"2026-07-04T15:20:03.781908Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T15:20:03.781908Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ZGuI+958PspAh0CAh24U6h4PerukPCkgB/gFhJdoAVzQ/djRKVDCRf0s4JprRRVzvr1lAI8SeiFwndbgFUoGDA==","signature_status":"signed_v1","signed_at":"2026-07-04T15:20:03.782526Z","signed_message":"canonical_sha256_bytes"},"source_id":"nucl-th/0512067","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:61fc2fa89cab5a1d32cdfe4e966cc4a2bd9b8efbf84daca8897b3d7103e3f6d2","sha256:00862e310a5f97badab2e673490715236debec577ab3ac94884f5c0f4b1674c1"],"state_sha256":"b0a9f329fec7a88650fc22e9683d79b147f2d044bdb32d92bee0ffe24346e927"}