{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:1996:R7QSXED3SKF7CAY356PAXOXFJV","short_pith_number":"pith:R7QSXED3","canonical_record":{"source":{"id":"nucl-th/9608040","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"nucl-th","submitted_at":"1996-08-19T17:07:03Z","cross_cats_sorted":[],"title_canon_sha256":"69094a7a39df8203ffa5357bb1897df4450a4c8d4d2bf8afba160f43750d210b","abstract_canon_sha256":"8ed7536a5280e42e9b7edd1b454244a0495ebd25c77f61de7a02067c229804b8"},"schema_version":"1.0"},"canonical_sha256":"8fe12b907b928bf1031bef9e0bbae54d5454a790de09cd43f475d250f351e46c","source":{"kind":"arxiv","id":"nucl-th/9608040","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"nucl-th/9608040","created_at":"2026-05-18T04:17:26Z"},{"alias_kind":"arxiv_version","alias_value":"nucl-th/9608040v1","created_at":"2026-05-18T04:17:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.nucl-th/9608040","created_at":"2026-05-18T04:17:26Z"},{"alias_kind":"pith_short_12","alias_value":"R7QSXED3SKF7","created_at":"2026-05-18T12:25:48Z"},{"alias_kind":"pith_short_16","alias_value":"R7QSXED3SKF7CAY3","created_at":"2026-05-18T12:25:48Z"},{"alias_kind":"pith_short_8","alias_value":"R7QSXED3","created_at":"2026-05-18T12:25:48Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:1996:R7QSXED3SKF7CAY356PAXOXFJV","target":"record","payload":{"canonical_record":{"source":{"id":"nucl-th/9608040","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"nucl-th","submitted_at":"1996-08-19T17:07:03Z","cross_cats_sorted":[],"title_canon_sha256":"69094a7a39df8203ffa5357bb1897df4450a4c8d4d2bf8afba160f43750d210b","abstract_canon_sha256":"8ed7536a5280e42e9b7edd1b454244a0495ebd25c77f61de7a02067c229804b8"},"schema_version":"1.0"},"canonical_sha256":"8fe12b907b928bf1031bef9e0bbae54d5454a790de09cd43f475d250f351e46c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:17:26.269166Z","signature_b64":"lVYcDPTmulVBw4hLSnXcYYMS1Pnf4JfCxmdBfwMp/Ko92xC97deDV/8lltw1gIyIcdXRTTEZih7QQ5WHWHsfDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8fe12b907b928bf1031bef9e0bbae54d5454a790de09cd43f475d250f351e46c","last_reissued_at":"2026-05-18T04:17:26.268430Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:17:26.268430Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"nucl-th/9608040","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T04:17:26Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ADyZ4q1+3GNrkUdbSJJB4OMlYxhbR7U2VoRy1DViXPrd3erZmXigpimSvTAPQJdLA5aBg1l3jacP5Wm9kI1rCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T21:25:06.075149Z"},"content_sha256":"8356a2fd99a1a236a2f7cfd38d6ed0af4687a198feebedac9d2d4095ee2dd098","schema_version":"1.0","event_id":"sha256:8356a2fd99a1a236a2f7cfd38d6ed0af4687a198feebedac9d2d4095ee2dd098"},{"event_type":"graph_snapshot","subject_pith_number":"pith:1996:R7QSXED3SKF7CAY356PAXOXFJV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Effects of in-medium vector meson masses on low-mass dileptons from SPS heavy-ion collisions","license":"","headline":"","cross_cats":[],"primary_cat":"nucl-th","authors_text":"C. M. Ko, G. E. Brown, G. Q. Li","submitted_at":"1996-08-19T17:07:03Z","abstract_excerpt":"Using a relativistic transport model to describe the expansion of the fire-cylinder formed in the initial stage of heavy-ion collisions at SPS/CERN energies, we study the production of dileptons with mass below about 1 GeV from these collisions. The initial hadron abundance and their momentum distributions in the fire-cylinder are determined by following the general features of the results from microscopic models based on the string dynamics and further requiring that the final proton and pion spectra and rapidity distributions are in agreement with available experimental data. For dilepton pr"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"nucl-th/9608040","kind":"arxiv","version":1},"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":"2026-05-18T04:17:26Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vgXlFAvz9gL/0d0jU54KZOHHo7UHoyfcgD0JxhOVYiooYismZo0NfAOtD/pye7lMsttSa1/dFzuSgIyx5bodCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T21:25:06.075871Z"},"content_sha256":"5736d3a79342cdb5ef27f01874c293fd36f8842612f30b6f1e33c103785dbabd","schema_version":"1.0","event_id":"sha256:5736d3a79342cdb5ef27f01874c293fd36f8842612f30b6f1e33c103785dbabd"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/R7QSXED3SKF7CAY356PAXOXFJV/bundle.json","state_url":"https://pith.science/pith/R7QSXED3SKF7CAY356PAXOXFJV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/R7QSXED3SKF7CAY356PAXOXFJV/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":"2026-05-25T21:25:06Z","links":{"resolver":"https://pith.science/pith/R7QSXED3SKF7CAY356PAXOXFJV","bundle":"https://pith.science/pith/R7QSXED3SKF7CAY356PAXOXFJV/bundle.json","state":"https://pith.science/pith/R7QSXED3SKF7CAY356PAXOXFJV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/R7QSXED3SKF7CAY356PAXOXFJV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1996:R7QSXED3SKF7CAY356PAXOXFJV","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":"8ed7536a5280e42e9b7edd1b454244a0495ebd25c77f61de7a02067c229804b8","cross_cats_sorted":[],"license":"","primary_cat":"nucl-th","submitted_at":"1996-08-19T17:07:03Z","title_canon_sha256":"69094a7a39df8203ffa5357bb1897df4450a4c8d4d2bf8afba160f43750d210b"},"schema_version":"1.0","source":{"id":"nucl-th/9608040","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"nucl-th/9608040","created_at":"2026-05-18T04:17:26Z"},{"alias_kind":"arxiv_version","alias_value":"nucl-th/9608040v1","created_at":"2026-05-18T04:17:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.nucl-th/9608040","created_at":"2026-05-18T04:17:26Z"},{"alias_kind":"pith_short_12","alias_value":"R7QSXED3SKF7","created_at":"2026-05-18T12:25:48Z"},{"alias_kind":"pith_short_16","alias_value":"R7QSXED3SKF7CAY3","created_at":"2026-05-18T12:25:48Z"},{"alias_kind":"pith_short_8","alias_value":"R7QSXED3","created_at":"2026-05-18T12:25:48Z"}],"graph_snapshots":[{"event_id":"sha256:5736d3a79342cdb5ef27f01874c293fd36f8842612f30b6f1e33c103785dbabd","target":"graph","created_at":"2026-05-18T04:17:26Z","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":"Using a relativistic transport model to describe the expansion of the fire-cylinder formed in the initial stage of heavy-ion collisions at SPS/CERN energies, we study the production of dileptons with mass below about 1 GeV from these collisions. The initial hadron abundance and their momentum distributions in the fire-cylinder are determined by following the general features of the results from microscopic models based on the string dynamics and further requiring that the final proton and pion spectra and rapidity distributions are in agreement with available experimental data. For dilepton pr","authors_text":"C. M. Ko, G. E. Brown, G. Q. Li","cross_cats":[],"headline":"","license":"","primary_cat":"nucl-th","submitted_at":"1996-08-19T17:07:03Z","title":"Effects of in-medium vector meson masses on low-mass dileptons from SPS heavy-ion collisions"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"nucl-th/9608040","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":"sha256:8356a2fd99a1a236a2f7cfd38d6ed0af4687a198feebedac9d2d4095ee2dd098","target":"record","created_at":"2026-05-18T04:17:26Z","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":"8ed7536a5280e42e9b7edd1b454244a0495ebd25c77f61de7a02067c229804b8","cross_cats_sorted":[],"license":"","primary_cat":"nucl-th","submitted_at":"1996-08-19T17:07:03Z","title_canon_sha256":"69094a7a39df8203ffa5357bb1897df4450a4c8d4d2bf8afba160f43750d210b"},"schema_version":"1.0","source":{"id":"nucl-th/9608040","kind":"arxiv","version":1}},"canonical_sha256":"8fe12b907b928bf1031bef9e0bbae54d5454a790de09cd43f475d250f351e46c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8fe12b907b928bf1031bef9e0bbae54d5454a790de09cd43f475d250f351e46c","first_computed_at":"2026-05-18T04:17:26.268430Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:17:26.268430Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"lVYcDPTmulVBw4hLSnXcYYMS1Pnf4JfCxmdBfwMp/Ko92xC97deDV/8lltw1gIyIcdXRTTEZih7QQ5WHWHsfDA==","signature_status":"signed_v1","signed_at":"2026-05-18T04:17:26.269166Z","signed_message":"canonical_sha256_bytes"},"source_id":"nucl-th/9608040","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8356a2fd99a1a236a2f7cfd38d6ed0af4687a198feebedac9d2d4095ee2dd098","sha256:5736d3a79342cdb5ef27f01874c293fd36f8842612f30b6f1e33c103785dbabd"],"state_sha256":"8a4e3adaa497f8a125138eeab0c0d60fa8d15ec7b0eb8392e9d94e3c4d9cc6cd"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Uw1GB36H+57UBTWbWhHJV6m9HN30fflVf75ENklwJ+7AyxCybZcfWuGUbyfQfhTYSmdVSVef5Xl8iHiWYTp7BQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T21:25:06.079767Z","bundle_sha256":"e3305e89631d20d8dcb3c59718e97d10cc2251610258ac1cc1df4cab1b288406"}}