{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:1999:55RPLSWXIYUKHHQ7YVZ3542BJJ","short_pith_number":"pith:55RPLSWX","canonical_record":{"source":{"id":"hep-ph/9901385","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"hep-ph","submitted_at":"1999-01-22T17:33:40Z","cross_cats_sorted":["nucl-th"],"title_canon_sha256":"cff3546b219cde94eab9405f197d5f9a106e54d3038ee68a6acefb244a549db4","abstract_canon_sha256":"00d028d9bd4e21f37ab2c113fa276db446d05cd2289cf0fc475a4ad0fccd1db5"},"schema_version":"1.0"},"canonical_sha256":"ef62f5cad74628a39e1fc573bef3414a42de98276e1f8716d0187a431ef0adc0","source":{"kind":"arxiv","id":"hep-ph/9901385","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-ph/9901385","created_at":"2026-05-18T01:08:00Z"},{"alias_kind":"arxiv_version","alias_value":"hep-ph/9901385v2","created_at":"2026-05-18T01:08:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-ph/9901385","created_at":"2026-05-18T01:08:00Z"},{"alias_kind":"pith_short_12","alias_value":"55RPLSWXIYUK","created_at":"2026-05-18T12:25:49Z"},{"alias_kind":"pith_short_16","alias_value":"55RPLSWXIYUKHHQ7","created_at":"2026-05-18T12:25:49Z"},{"alias_kind":"pith_short_8","alias_value":"55RPLSWX","created_at":"2026-05-18T12:25:49Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:1999:55RPLSWXIYUKHHQ7YVZ3542BJJ","target":"record","payload":{"canonical_record":{"source":{"id":"hep-ph/9901385","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"hep-ph","submitted_at":"1999-01-22T17:33:40Z","cross_cats_sorted":["nucl-th"],"title_canon_sha256":"cff3546b219cde94eab9405f197d5f9a106e54d3038ee68a6acefb244a549db4","abstract_canon_sha256":"00d028d9bd4e21f37ab2c113fa276db446d05cd2289cf0fc475a4ad0fccd1db5"},"schema_version":"1.0"},"canonical_sha256":"ef62f5cad74628a39e1fc573bef3414a42de98276e1f8716d0187a431ef0adc0","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:08:00.724540Z","signature_b64":"PPIF8HPxdwejlG2sesO9iuGNvbQvEgHeUNU2zI0j17PZi76GT6VtrOd98aQwQVD/MRxllsxjwDOAkfdAhq1lAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ef62f5cad74628a39e1fc573bef3414a42de98276e1f8716d0187a431ef0adc0","last_reissued_at":"2026-05-18T01:08:00.724112Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:08:00.724112Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"hep-ph/9901385","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:08:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JlrLdzmHusBvgmX72uufTuNebfIl0lOsyms69wTXShyU7mlYsuDIqp6QdDkRrHELTkch28Th3jkNhR5bjNY8Cw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-24T18:45:25.261556Z"},"content_sha256":"2b323e5b326d5c0ede0d4517c6268c8e63473e7a847037354bf6f80f39b6dadd","schema_version":"1.0","event_id":"sha256:2b323e5b326d5c0ede0d4517c6268c8e63473e7a847037354bf6f80f39b6dadd"},{"event_type":"graph_snapshot","subject_pith_number":"pith:1999:55RPLSWXIYUKHHQ7YVZ3542BJJ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Role of Nucleons in Electromagnetic Emission Rates","license":"","headline":"","cross_cats":["nucl-th"],"primary_cat":"hep-ph","authors_text":"Ismail Zahed, James V. Steele","submitted_at":"1999-01-22T17:33:40Z","abstract_excerpt":"Electromagnetic emission rates from a thermalized hadronic gas are important for the interpretation of dilepton signals from heavy-ion collisions. Although there is a consensus in the literature about rates for a pure meson gas, qualitative differences appear with a finite baryon density. We show this to be essentially due to the way in which the pi-N background is treated in regards to the nucleon resonances. Using a background constrained by unitarity and broken chiral symmetry, it is emphasized that the thermalized hadronic gas can be considered dilute."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/9901385","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:08:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QQqLOTOczkp6D+rEIQUl1/ERMzJs91dGULqVYtz6MmWO5XN2YuTUY297Yxe8rZDr36AohjmaTjfOOJkSt50iBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-24T18:45:25.261892Z"},"content_sha256":"9db4a812263911703d8d59b1e8789b0ce43b13fc4d67c70444fca4728d8c800b","schema_version":"1.0","event_id":"sha256:9db4a812263911703d8d59b1e8789b0ce43b13fc4d67c70444fca4728d8c800b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/55RPLSWXIYUKHHQ7YVZ3542BJJ/bundle.json","state_url":"https://pith.science/pith/55RPLSWXIYUKHHQ7YVZ3542BJJ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/55RPLSWXIYUKHHQ7YVZ3542BJJ/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-06-24T18:45:25Z","links":{"resolver":"https://pith.science/pith/55RPLSWXIYUKHHQ7YVZ3542BJJ","bundle":"https://pith.science/pith/55RPLSWXIYUKHHQ7YVZ3542BJJ/bundle.json","state":"https://pith.science/pith/55RPLSWXIYUKHHQ7YVZ3542BJJ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/55RPLSWXIYUKHHQ7YVZ3542BJJ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1999:55RPLSWXIYUKHHQ7YVZ3542BJJ","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":"00d028d9bd4e21f37ab2c113fa276db446d05cd2289cf0fc475a4ad0fccd1db5","cross_cats_sorted":["nucl-th"],"license":"","primary_cat":"hep-ph","submitted_at":"1999-01-22T17:33:40Z","title_canon_sha256":"cff3546b219cde94eab9405f197d5f9a106e54d3038ee68a6acefb244a549db4"},"schema_version":"1.0","source":{"id":"hep-ph/9901385","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-ph/9901385","created_at":"2026-05-18T01:08:00Z"},{"alias_kind":"arxiv_version","alias_value":"hep-ph/9901385v2","created_at":"2026-05-18T01:08:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-ph/9901385","created_at":"2026-05-18T01:08:00Z"},{"alias_kind":"pith_short_12","alias_value":"55RPLSWXIYUK","created_at":"2026-05-18T12:25:49Z"},{"alias_kind":"pith_short_16","alias_value":"55RPLSWXIYUKHHQ7","created_at":"2026-05-18T12:25:49Z"},{"alias_kind":"pith_short_8","alias_value":"55RPLSWX","created_at":"2026-05-18T12:25:49Z"}],"graph_snapshots":[{"event_id":"sha256:9db4a812263911703d8d59b1e8789b0ce43b13fc4d67c70444fca4728d8c800b","target":"graph","created_at":"2026-05-18T01:08:00Z","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":"Electromagnetic emission rates from a thermalized hadronic gas are important for the interpretation of dilepton signals from heavy-ion collisions. Although there is a consensus in the literature about rates for a pure meson gas, qualitative differences appear with a finite baryon density. We show this to be essentially due to the way in which the pi-N background is treated in regards to the nucleon resonances. Using a background constrained by unitarity and broken chiral symmetry, it is emphasized that the thermalized hadronic gas can be considered dilute.","authors_text":"Ismail Zahed, James V. Steele","cross_cats":["nucl-th"],"headline":"","license":"","primary_cat":"hep-ph","submitted_at":"1999-01-22T17:33:40Z","title":"The Role of Nucleons in Electromagnetic Emission Rates"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/9901385","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":"sha256:2b323e5b326d5c0ede0d4517c6268c8e63473e7a847037354bf6f80f39b6dadd","target":"record","created_at":"2026-05-18T01:08:00Z","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":"00d028d9bd4e21f37ab2c113fa276db446d05cd2289cf0fc475a4ad0fccd1db5","cross_cats_sorted":["nucl-th"],"license":"","primary_cat":"hep-ph","submitted_at":"1999-01-22T17:33:40Z","title_canon_sha256":"cff3546b219cde94eab9405f197d5f9a106e54d3038ee68a6acefb244a549db4"},"schema_version":"1.0","source":{"id":"hep-ph/9901385","kind":"arxiv","version":2}},"canonical_sha256":"ef62f5cad74628a39e1fc573bef3414a42de98276e1f8716d0187a431ef0adc0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ef62f5cad74628a39e1fc573bef3414a42de98276e1f8716d0187a431ef0adc0","first_computed_at":"2026-05-18T01:08:00.724112Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:08:00.724112Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"PPIF8HPxdwejlG2sesO9iuGNvbQvEgHeUNU2zI0j17PZi76GT6VtrOd98aQwQVD/MRxllsxjwDOAkfdAhq1lAw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:08:00.724540Z","signed_message":"canonical_sha256_bytes"},"source_id":"hep-ph/9901385","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2b323e5b326d5c0ede0d4517c6268c8e63473e7a847037354bf6f80f39b6dadd","sha256:9db4a812263911703d8d59b1e8789b0ce43b13fc4d67c70444fca4728d8c800b"],"state_sha256":"74a6ee75ee353e4c30ce2d0a3555bc809bba15ee7d9e93d62c250c4336802b37"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BzD0c9fSkkB+ryfY/Bt7oQKZmlRNHhKCckoyRjdfS9kyysYyS0soQA8lOY7ihQMCz8aePkTW+ALOwhM8K14iCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-24T18:45:25.263920Z","bundle_sha256":"aaef27d8c15b67b83b3dcb617217689c2cc1b09930581d8de19eece8cabb1252"}}