{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:JOC7OXSA3WILG66G7MCN7FB2YJ","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":"ad9958ace7c51e05e28550ba10227a203af9ee74305c394368bfbf2432dd1a40","cross_cats_sorted":["astro-ph.SR","nucl-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2015-07-12T21:49:55Z","title_canon_sha256":"edcc8d6b2b2866fedb3460f6af0fad0753c7321ee3ea4900cd6a76ac0e36a3f0"},"schema_version":"1.0","source":{"id":"1507.03279","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1507.03279","created_at":"2026-05-18T01:32:36Z"},{"alias_kind":"arxiv_version","alias_value":"1507.03279v2","created_at":"2026-05-18T01:32:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1507.03279","created_at":"2026-05-18T01:32:36Z"},{"alias_kind":"pith_short_12","alias_value":"JOC7OXSA3WIL","created_at":"2026-05-18T12:29:27Z"},{"alias_kind":"pith_short_16","alias_value":"JOC7OXSA3WILG66G","created_at":"2026-05-18T12:29:27Z"},{"alias_kind":"pith_short_8","alias_value":"JOC7OXSA","created_at":"2026-05-18T12:29:27Z"}],"graph_snapshots":[{"event_id":"sha256:2919c840ab7831a48fc01afb81a112642567a1adc7a82272422924cf1dfcc889","target":"graph","created_at":"2026-05-18T01:32:36Z","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":"Effects of the completely unknown symmetry (isovector) potential of the \\D on the total and differential \\rpi in heavy-ion collisions at beam energies from 100 to 1000 MeV/A are explored within an isospin-dependent transport model IBUU. The effects are found to be negligible at beam energies above the pion production threshold due to the very short lifetimes of less than 2 fm/c for $\\Delta$ resonances with masses around $m_{\\Delta}=1232$ MeV, leaving the $\\pi^-/\\pi^+$ ratios of especially the energetic pions still a reliable probe of the high-density behavior of nuclear symmetry energy $E_{sym","authors_text":"Bao-An Li","cross_cats":["astro-ph.SR","nucl-ex"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2015-07-12T21:49:55Z","title":"Symmetry potential of $\\Delta(1232)$ resonance and its effects on the $\\pi^-/\\pi^+$ ratio in heavy-ion collisions near the pion production threshold"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1507.03279","kind":"arxiv","version":2},"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":"sha256:77d892bff8447a8bb61dba22584d757b42653b67316c0b972b23a38ddc646c22","target":"record","created_at":"2026-05-18T01:32:36Z","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":"ad9958ace7c51e05e28550ba10227a203af9ee74305c394368bfbf2432dd1a40","cross_cats_sorted":["astro-ph.SR","nucl-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2015-07-12T21:49:55Z","title_canon_sha256":"edcc8d6b2b2866fedb3460f6af0fad0753c7321ee3ea4900cd6a76ac0e36a3f0"},"schema_version":"1.0","source":{"id":"1507.03279","kind":"arxiv","version":2}},"canonical_sha256":"4b85f75e40dd90b37bc6fb04df943ac2482309883087b384a0ff1f4ffd95ed03","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4b85f75e40dd90b37bc6fb04df943ac2482309883087b384a0ff1f4ffd95ed03","first_computed_at":"2026-05-18T01:32:36.906841Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:32:36.906841Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"r0U6con9MjtH1kERIdZNztIFLJtCZ/ch5pqbGuKQd/Ngar+ztg/s33kIUFKyop3qzqqCZRIC9I0g2qjP31TPBA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:32:36.907384Z","signed_message":"canonical_sha256_bytes"},"source_id":"1507.03279","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:77d892bff8447a8bb61dba22584d757b42653b67316c0b972b23a38ddc646c22","sha256:2919c840ab7831a48fc01afb81a112642567a1adc7a82272422924cf1dfcc889"],"state_sha256":"370cdbfc815bc7f5d126683ed242486cf7fea168742322ee143fab7463b80818"}