{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:M2VWTCMMIHVJQD3S4QEV2MO77Q","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":"61e6bc513bcd3c940466c54c61bc38f027a435ec2adbbaf3d8c1e81eca4214eb","cross_cats_sorted":["hep-ph","nucl-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2013-01-04T18:11:24Z","title_canon_sha256":"5300d5c1929605ef2d0504ce81a6d01ab7afe88b033f281cee1bfc99a6fdddb1"},"schema_version":"1.0","source":{"id":"1301.0786","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1301.0786","created_at":"2026-05-18T03:14:50Z"},{"alias_kind":"arxiv_version","alias_value":"1301.0786v3","created_at":"2026-05-18T03:14:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1301.0786","created_at":"2026-05-18T03:14:50Z"},{"alias_kind":"pith_short_12","alias_value":"M2VWTCMMIHVJ","created_at":"2026-05-18T12:27:51Z"},{"alias_kind":"pith_short_16","alias_value":"M2VWTCMMIHVJQD3S","created_at":"2026-05-18T12:27:51Z"},{"alias_kind":"pith_short_8","alias_value":"M2VWTCMM","created_at":"2026-05-18T12:27:51Z"}],"graph_snapshots":[{"event_id":"sha256:5e97033fe8bab29af84e6a862bf84f5c9d592c50806c5b4b14ae60dadc947447","target":"graph","created_at":"2026-05-18T03:14:50Z","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":"We study the dilepton production in heavy-ion collisions at energies of 1-2 AGeV as well as in proton induced pp, pn, pd and p+A reactions from 1 GeV up to 3.5 GeV. For the analysis we employ three different transport models - the microscopic off-shell Hadron-String-Dynamics (HSD) transport approach, the Isospin Quantum Molecular Dynamics (IQMD) approach as well as the Ultra-relativistic Quantum Molecular Dynamics (UrQMD) approach. We confirm the experimentally observed enhancement of the dilepton yield (normalized to the multiplicity of neutral pions $N_{\\pi^0}$) in heavy-ion collisions with ","authors_text":"E.L. Bratkovskaya (FIAS&ITP, J. Aichelin (SUBATECH, M. Bleicher (FIAS&ITP, M. Thomere (SUBATECH, S. Vogel (ITP, Uni. Frankfurt), Uni. Nantes)","cross_cats":["hep-ph","nucl-ex"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2013-01-04T18:11:24Z","title":"System Size and Energy Dependence of Dilepton Production in Heavy-Ion Collisions at SIS Energies"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1301.0786","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":"sha256:01cf545074366d153412661744d3c9a49d296af4405186819e511555a97ad4e0","target":"record","created_at":"2026-05-18T03:14:50Z","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":"61e6bc513bcd3c940466c54c61bc38f027a435ec2adbbaf3d8c1e81eca4214eb","cross_cats_sorted":["hep-ph","nucl-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2013-01-04T18:11:24Z","title_canon_sha256":"5300d5c1929605ef2d0504ce81a6d01ab7afe88b033f281cee1bfc99a6fdddb1"},"schema_version":"1.0","source":{"id":"1301.0786","kind":"arxiv","version":3}},"canonical_sha256":"66ab69898c41ea980f72e4095d31dffc0a7b87779ff72ca2d8316254f618b62d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"66ab69898c41ea980f72e4095d31dffc0a7b87779ff72ca2d8316254f618b62d","first_computed_at":"2026-05-18T03:14:50.083459Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:14:50.083459Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"cJSgwro/lK7KAo9OuWxhwSlWvAB/hVYLSjLxccZ0QKe15/+xZcDgP7l5nUq8CnVRc6BN3wL6b2LTgNp/0DT8Bw==","signature_status":"signed_v1","signed_at":"2026-05-18T03:14:50.084233Z","signed_message":"canonical_sha256_bytes"},"source_id":"1301.0786","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:01cf545074366d153412661744d3c9a49d296af4405186819e511555a97ad4e0","sha256:5e97033fe8bab29af84e6a862bf84f5c9d592c50806c5b4b14ae60dadc947447"],"state_sha256":"223422c170d4d5175a7572a1e941ed1109c035d6cc2a4704dbdcfe267d6bf18a"}