{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:PAIVKPL4K4C3J2WF25RRIPJUTN","short_pith_number":"pith:PAIVKPL4","canonical_record":{"source":{"id":"1009.5266","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2010-09-27T14:17:35Z","cross_cats_sorted":[],"title_canon_sha256":"1424d26c01b5425e9ac15664a36674c064ee46e98f62328f8b36da55fa98e0cc","abstract_canon_sha256":"8b0b3ab162f2e679a87d12410dd4d61ba6249394e74093f72085ac77e726d068"},"schema_version":"1.0"},"canonical_sha256":"7811553d7c5705b4eac5d763143d349b7424e1c75a07cb28a565ab1ff7406b32","source":{"kind":"arxiv","id":"1009.5266","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1009.5266","created_at":"2026-05-18T04:27:56Z"},{"alias_kind":"arxiv_version","alias_value":"1009.5266v2","created_at":"2026-05-18T04:27:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1009.5266","created_at":"2026-05-18T04:27:56Z"},{"alias_kind":"pith_short_12","alias_value":"PAIVKPL4K4C3","created_at":"2026-05-18T12:26:12Z"},{"alias_kind":"pith_short_16","alias_value":"PAIVKPL4K4C3J2WF","created_at":"2026-05-18T12:26:12Z"},{"alias_kind":"pith_short_8","alias_value":"PAIVKPL4","created_at":"2026-05-18T12:26:12Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:PAIVKPL4K4C3J2WF25RRIPJUTN","target":"record","payload":{"canonical_record":{"source":{"id":"1009.5266","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2010-09-27T14:17:35Z","cross_cats_sorted":[],"title_canon_sha256":"1424d26c01b5425e9ac15664a36674c064ee46e98f62328f8b36da55fa98e0cc","abstract_canon_sha256":"8b0b3ab162f2e679a87d12410dd4d61ba6249394e74093f72085ac77e726d068"},"schema_version":"1.0"},"canonical_sha256":"7811553d7c5705b4eac5d763143d349b7424e1c75a07cb28a565ab1ff7406b32","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:27:56.628449Z","signature_b64":"qjrzCgKrSXf7kaGu6kv2aZFq92GqMnKHlV9iWwIM9ol5aJ3hh/6wRPoRMnDv/DyDQUsddpf2YVohlMJmmh5fAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7811553d7c5705b4eac5d763143d349b7424e1c75a07cb28a565ab1ff7406b32","last_reissued_at":"2026-05-18T04:27:56.627941Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:27:56.627941Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1009.5266","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":"2026-05-18T04:27:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"250pI36OqJ5AKCFYOzyQV+WL91cfCjdaP0GR+saRjv+TOa4lk9FEeaXxltwzBcmssRklodZ1ghyvK0k1tFnqBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T05:03:31.566963Z"},"content_sha256":"e863563254daa162b6ba410a0c1c5b327102878e923f91d439a91dcf1eeb48b0","schema_version":"1.0","event_id":"sha256:e863563254daa162b6ba410a0c1c5b327102878e923f91d439a91dcf1eeb48b0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:PAIVKPL4K4C3J2WF25RRIPJUTN","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Low mass dimuons within a hybrid approach","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"nucl-th","authors_text":"Elvira Santini, Marcus Bleicher","submitted_at":"2010-09-27T14:17:35Z","abstract_excerpt":"We analyse dilepton emission from hot and dense hadronic matter using a hybrid approach based on the Ultrarelativistic Quantum Molecular Dynamics (UrQMD) transport model with an intermediate hydrodynamic stage for the description of heavy-ion collisions at relativistic energies. Focusing on the enhancement with respect to the contribution from long-lived hadron decays after freeze-out observed at the SPS in the low mass region of the dilepton spectra (often referred to as \"the excess\"), the relative importance of the emission from the equilibrium and the non-equilibrium stages is discussed."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1009.5266","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":"2026-05-18T04:27:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"narj9V/hW3MP1LTfdU+dPQ7NUF6JtaIeBdQno56rP7pzU1K+YkFUJrNJpedmOr5mXkhuzHjcGGsuNnnXZpXZAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T05:03:31.567611Z"},"content_sha256":"74a338911e043cb0d3e31dc95569c6b26980c48cafb7c402f7731e3027e6ca79","schema_version":"1.0","event_id":"sha256:74a338911e043cb0d3e31dc95569c6b26980c48cafb7c402f7731e3027e6ca79"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PAIVKPL4K4C3J2WF25RRIPJUTN/bundle.json","state_url":"https://pith.science/pith/PAIVKPL4K4C3J2WF25RRIPJUTN/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PAIVKPL4K4C3J2WF25RRIPJUTN/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":"2026-05-30T05:03:31Z","links":{"resolver":"https://pith.science/pith/PAIVKPL4K4C3J2WF25RRIPJUTN","bundle":"https://pith.science/pith/PAIVKPL4K4C3J2WF25RRIPJUTN/bundle.json","state":"https://pith.science/pith/PAIVKPL4K4C3J2WF25RRIPJUTN/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PAIVKPL4K4C3J2WF25RRIPJUTN/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:PAIVKPL4K4C3J2WF25RRIPJUTN","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":"8b0b3ab162f2e679a87d12410dd4d61ba6249394e74093f72085ac77e726d068","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2010-09-27T14:17:35Z","title_canon_sha256":"1424d26c01b5425e9ac15664a36674c064ee46e98f62328f8b36da55fa98e0cc"},"schema_version":"1.0","source":{"id":"1009.5266","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1009.5266","created_at":"2026-05-18T04:27:56Z"},{"alias_kind":"arxiv_version","alias_value":"1009.5266v2","created_at":"2026-05-18T04:27:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1009.5266","created_at":"2026-05-18T04:27:56Z"},{"alias_kind":"pith_short_12","alias_value":"PAIVKPL4K4C3","created_at":"2026-05-18T12:26:12Z"},{"alias_kind":"pith_short_16","alias_value":"PAIVKPL4K4C3J2WF","created_at":"2026-05-18T12:26:12Z"},{"alias_kind":"pith_short_8","alias_value":"PAIVKPL4","created_at":"2026-05-18T12:26:12Z"}],"graph_snapshots":[{"event_id":"sha256:74a338911e043cb0d3e31dc95569c6b26980c48cafb7c402f7731e3027e6ca79","target":"graph","created_at":"2026-05-18T04:27:56Z","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 analyse dilepton emission from hot and dense hadronic matter using a hybrid approach based on the Ultrarelativistic Quantum Molecular Dynamics (UrQMD) transport model with an intermediate hydrodynamic stage for the description of heavy-ion collisions at relativistic energies. Focusing on the enhancement with respect to the contribution from long-lived hadron decays after freeze-out observed at the SPS in the low mass region of the dilepton spectra (often referred to as \"the excess\"), the relative importance of the emission from the equilibrium and the non-equilibrium stages is discussed.","authors_text":"Elvira Santini, Marcus Bleicher","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2010-09-27T14:17:35Z","title":"Low mass dimuons within a hybrid approach"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1009.5266","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:e863563254daa162b6ba410a0c1c5b327102878e923f91d439a91dcf1eeb48b0","target":"record","created_at":"2026-05-18T04:27:56Z","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":"8b0b3ab162f2e679a87d12410dd4d61ba6249394e74093f72085ac77e726d068","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2010-09-27T14:17:35Z","title_canon_sha256":"1424d26c01b5425e9ac15664a36674c064ee46e98f62328f8b36da55fa98e0cc"},"schema_version":"1.0","source":{"id":"1009.5266","kind":"arxiv","version":2}},"canonical_sha256":"7811553d7c5705b4eac5d763143d349b7424e1c75a07cb28a565ab1ff7406b32","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7811553d7c5705b4eac5d763143d349b7424e1c75a07cb28a565ab1ff7406b32","first_computed_at":"2026-05-18T04:27:56.627941Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:27:56.627941Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"qjrzCgKrSXf7kaGu6kv2aZFq92GqMnKHlV9iWwIM9ol5aJ3hh/6wRPoRMnDv/DyDQUsddpf2YVohlMJmmh5fAw==","signature_status":"signed_v1","signed_at":"2026-05-18T04:27:56.628449Z","signed_message":"canonical_sha256_bytes"},"source_id":"1009.5266","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e863563254daa162b6ba410a0c1c5b327102878e923f91d439a91dcf1eeb48b0","sha256:74a338911e043cb0d3e31dc95569c6b26980c48cafb7c402f7731e3027e6ca79"],"state_sha256":"b695a7abb8002c5b4e052c5b75f8850ea6faae71cbeb63571cd24ee1d97696e2"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1zCtZWSIstfaTiDi0+K2u+WX2myIznW3gjYGIdRcBqNNgzvVelIXfZgP19R9/M9NhGEdTls9hRPFCkGZn5JKCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T05:03:31.570669Z","bundle_sha256":"973512e5dff49a65bc5a4ef44eaff10e4807f8c4fa60d0452269ff5666d29d3c"}}