{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2007:TNFB6HMIEVWZF53WRL5AIKS5OZ","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":"8c65df204699a5bac70a462d8bc0d856f6f469e3009cbea6b17f46f0b987bf43","cross_cats_sorted":["nucl-ex"],"license":"","primary_cat":"nucl-th","submitted_at":"2007-11-19T04:14:10Z","title_canon_sha256":"2810f64f0fe23c407730475de87873505ba05ba2b78f4e7b959a4fdb748ff651"},"schema_version":"1.0","source":{"id":"0711.2837","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0711.2837","created_at":"2026-07-04T15:23:45Z"},{"alias_kind":"arxiv_version","alias_value":"0711.2837v2","created_at":"2026-07-04T15:23:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0711.2837","created_at":"2026-07-04T15:23:45Z"},{"alias_kind":"pith_short_12","alias_value":"TNFB6HMIEVWZ","created_at":"2026-07-04T15:23:45Z"},{"alias_kind":"pith_short_16","alias_value":"TNFB6HMIEVWZF53W","created_at":"2026-07-04T15:23:45Z"},{"alias_kind":"pith_short_8","alias_value":"TNFB6HMI","created_at":"2026-07-04T15:23:45Z"}],"graph_snapshots":[{"event_id":"sha256:74e4a8241fb27a4ea65707464cab4d2e67505c1f625195e5c7ee7e1fc9f4a5f0","target":"graph","created_at":"2026-07-04T15:23:45Z","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/0711.2837/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Hard photons from neutron-proton bremsstrahlung in intermediate energy heavy-ion reactions are examined as a potential probe of the nuclear symmetry energy within a transport model. Effects of the symmetry energy on the yields and spectra of hard photons are found to be generally smaller than those due to the currently existing uncertainties of both the in-medium nucleon-nucleon cross sections and the photon production probability in the elementary process $pn\\to pn\\gamma$. Very interestingly, nevertheless, the ratio of hard photon spectra $R_{1/2}(\\gamma)$ from two reactions using isotopes of","authors_text":"Bao-An Li, Gao-Chan Yong, Lie-Wen Chen","cross_cats":["nucl-ex"],"headline":"","license":"","primary_cat":"nucl-th","submitted_at":"2007-11-19T04:14:10Z","title":"Neutron-proton bremsstrahlung from intermediate energy heavy-ion reactions as a probe of the nuclear symmetry energy?"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0711.2837","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:adb69c5233fd497fbc8b4d9a7690919901da41e71480dfb76a7767890bcf8306","target":"record","created_at":"2026-07-04T15:23:45Z","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":"8c65df204699a5bac70a462d8bc0d856f6f469e3009cbea6b17f46f0b987bf43","cross_cats_sorted":["nucl-ex"],"license":"","primary_cat":"nucl-th","submitted_at":"2007-11-19T04:14:10Z","title_canon_sha256":"2810f64f0fe23c407730475de87873505ba05ba2b78f4e7b959a4fdb748ff651"},"schema_version":"1.0","source":{"id":"0711.2837","kind":"arxiv","version":2}},"canonical_sha256":"9b4a1f1d88256d92f7768afa042a5d76422f3e0bbf8b80d26857cd76c6c04223","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9b4a1f1d88256d92f7768afa042a5d76422f3e0bbf8b80d26857cd76c6c04223","first_computed_at":"2026-07-04T15:23:45.365708Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T15:23:45.365708Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"RskA1CgFQKfs6mcqcpvcSsI+neOKSg6aZeXjjHFGYkINIY4qbSRj5UH5fk6nfxGsno/Zx0FipXo2rlIgrXABDw==","signature_status":"signed_v1","signed_at":"2026-07-04T15:23:45.366140Z","signed_message":"canonical_sha256_bytes"},"source_id":"0711.2837","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:adb69c5233fd497fbc8b4d9a7690919901da41e71480dfb76a7767890bcf8306","sha256:74e4a8241fb27a4ea65707464cab4d2e67505c1f625195e5c7ee7e1fc9f4a5f0"],"state_sha256":"a0d57c915aa270ad2e71864aa754ec7d8d724e624d9677203785b37fac554a32"}