{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:BPKBT7CWYORPHHMQOZ3OUCFFPK","short_pith_number":"pith:BPKBT7CW","canonical_record":{"source":{"id":"1908.01156","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2019-08-03T12:27:41Z","cross_cats_sorted":["hep-ex","nucl-ex"],"title_canon_sha256":"8a6c6add437c3604ef0233328def4528205aca9f7eaab360bf3ef6b55f96464b","abstract_canon_sha256":"df1bb2d36df9936d8538950c800c61af337b35092430cc986320990448617baa"},"schema_version":"1.0"},"canonical_sha256":"0bd419fc56c3a2f39d907676ea08a57aa68cb68a589ed2bbe30869caf65bd5a3","source":{"kind":"arxiv","id":"1908.01156","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1908.01156","created_at":"2026-07-05T00:12:52Z"},{"alias_kind":"arxiv_version","alias_value":"1908.01156v2","created_at":"2026-07-05T00:12:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1908.01156","created_at":"2026-07-05T00:12:52Z"},{"alias_kind":"pith_short_12","alias_value":"BPKBT7CWYORP","created_at":"2026-07-05T00:12:52Z"},{"alias_kind":"pith_short_16","alias_value":"BPKBT7CWYORPHHMQ","created_at":"2026-07-05T00:12:52Z"},{"alias_kind":"pith_short_8","alias_value":"BPKBT7CW","created_at":"2026-07-05T00:12:52Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:BPKBT7CWYORPHHMQOZ3OUCFFPK","target":"record","payload":{"canonical_record":{"source":{"id":"1908.01156","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2019-08-03T12:27:41Z","cross_cats_sorted":["hep-ex","nucl-ex"],"title_canon_sha256":"8a6c6add437c3604ef0233328def4528205aca9f7eaab360bf3ef6b55f96464b","abstract_canon_sha256":"df1bb2d36df9936d8538950c800c61af337b35092430cc986320990448617baa"},"schema_version":"1.0"},"canonical_sha256":"0bd419fc56c3a2f39d907676ea08a57aa68cb68a589ed2bbe30869caf65bd5a3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:12:52.958066Z","signature_b64":"pcMHu7h25/Da1e9DisoYm/VeZjvKujmkF5qiDauHaTcMefkZGXx/RJEWk4Z/fTHnkgrRhagDGqj/mv9sTXqKCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0bd419fc56c3a2f39d907676ea08a57aa68cb68a589ed2bbe30869caf65bd5a3","last_reissued_at":"2026-07-05T00:12:52.957599Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:12:52.957599Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1908.01156","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":"2026-07-05T00:12:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"U0NZ1sIQwocya9X2nmhkJl7bnH8lJwSmI6DtKCHWfB0FUxYVs9l7adi6G+Bmyg6CECDNDmjGKPNtV/AShe9jCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-08T01:09:41.176475Z"},"content_sha256":"85c8cc6d8d3449345a2feefc19fed0c19c43e3e7fc8ef3a65569f97717a02abd","schema_version":"1.0","event_id":"sha256:85c8cc6d8d3449345a2feefc19fed0c19c43e3e7fc8ef3a65569f97717a02abd"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:BPKBT7CWYORPHHMQOZ3OUCFFPK","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Isospin splitting of pion elliptic flow in relativistic heavy-ion collisions","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex","nucl-ex"],"primary_cat":"nucl-th","authors_text":"Che Ming Ko, Feng-Tao Wang, He Liu, Jun Xu, Kai-Jia Sun","submitted_at":"2019-08-03T12:27:41Z","abstract_excerpt":"Based on the framework of an extended multiphase transport model with mean-field potentials in both the partonic phase and the hadronic phase, we explain the elliptic flow difference between $\\pi^+$ and $\\pi^-$ in the beam-energy scan program at the relativistic heavy-ion collider by incorporating the vector-isovector potential for quarks and antiquarks with different isospins. It is found that the isospin splitting of pion elliptic flow favors a strong vector-isovector interaction, and thus serves as a probe of the quark matter equation of state as well as the QCD phase structure at finite ba"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1908.01156","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1908.01156/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T00:12:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GO70bGSEsp4Kt+gFMcuDD27ciZk9dIqvH5AFXHXNRSNlCtMEydmgAT2mQdhWYAApiWJmZD9MbezYsMuqCFaHDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-08T01:09:41.177039Z"},"content_sha256":"b36a1167f2ca3510f4316af5c80a9898011fd428b5d82f7cc99e24d781a3da86","schema_version":"1.0","event_id":"sha256:b36a1167f2ca3510f4316af5c80a9898011fd428b5d82f7cc99e24d781a3da86"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/BPKBT7CWYORPHHMQOZ3OUCFFPK/bundle.json","state_url":"https://pith.science/pith/BPKBT7CWYORPHHMQOZ3OUCFFPK/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/BPKBT7CWYORPHHMQOZ3OUCFFPK/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":"2026-08-08T01:09:41Z","links":{"resolver":"https://pith.science/pith/BPKBT7CWYORPHHMQOZ3OUCFFPK","bundle":"https://pith.science/pith/BPKBT7CWYORPHHMQOZ3OUCFFPK/bundle.json","state":"https://pith.science/pith/BPKBT7CWYORPHHMQOZ3OUCFFPK/state.json","well_known_bundle":"https://pith.science/.well-known/pith/BPKBT7CWYORPHHMQOZ3OUCFFPK/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:BPKBT7CWYORPHHMQOZ3OUCFFPK","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":"df1bb2d36df9936d8538950c800c61af337b35092430cc986320990448617baa","cross_cats_sorted":["hep-ex","nucl-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2019-08-03T12:27:41Z","title_canon_sha256":"8a6c6add437c3604ef0233328def4528205aca9f7eaab360bf3ef6b55f96464b"},"schema_version":"1.0","source":{"id":"1908.01156","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1908.01156","created_at":"2026-07-05T00:12:52Z"},{"alias_kind":"arxiv_version","alias_value":"1908.01156v2","created_at":"2026-07-05T00:12:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1908.01156","created_at":"2026-07-05T00:12:52Z"},{"alias_kind":"pith_short_12","alias_value":"BPKBT7CWYORP","created_at":"2026-07-05T00:12:52Z"},{"alias_kind":"pith_short_16","alias_value":"BPKBT7CWYORPHHMQ","created_at":"2026-07-05T00:12:52Z"},{"alias_kind":"pith_short_8","alias_value":"BPKBT7CW","created_at":"2026-07-05T00:12:52Z"}],"graph_snapshots":[{"event_id":"sha256:b36a1167f2ca3510f4316af5c80a9898011fd428b5d82f7cc99e24d781a3da86","target":"graph","created_at":"2026-07-05T00:12:52Z","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/1908.01156/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Based on the framework of an extended multiphase transport model with mean-field potentials in both the partonic phase and the hadronic phase, we explain the elliptic flow difference between $\\pi^+$ and $\\pi^-$ in the beam-energy scan program at the relativistic heavy-ion collider by incorporating the vector-isovector potential for quarks and antiquarks with different isospins. It is found that the isospin splitting of pion elliptic flow favors a strong vector-isovector interaction, and thus serves as a probe of the quark matter equation of state as well as the QCD phase structure at finite ba","authors_text":"Che Ming Ko, Feng-Tao Wang, He Liu, Jun Xu, Kai-Jia Sun","cross_cats":["hep-ex","nucl-ex"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2019-08-03T12:27:41Z","title":"Isospin splitting of pion elliptic flow in relativistic heavy-ion collisions"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1908.01156","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":"sha256:85c8cc6d8d3449345a2feefc19fed0c19c43e3e7fc8ef3a65569f97717a02abd","target":"record","created_at":"2026-07-05T00:12:52Z","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":"df1bb2d36df9936d8538950c800c61af337b35092430cc986320990448617baa","cross_cats_sorted":["hep-ex","nucl-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2019-08-03T12:27:41Z","title_canon_sha256":"8a6c6add437c3604ef0233328def4528205aca9f7eaab360bf3ef6b55f96464b"},"schema_version":"1.0","source":{"id":"1908.01156","kind":"arxiv","version":2}},"canonical_sha256":"0bd419fc56c3a2f39d907676ea08a57aa68cb68a589ed2bbe30869caf65bd5a3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0bd419fc56c3a2f39d907676ea08a57aa68cb68a589ed2bbe30869caf65bd5a3","first_computed_at":"2026-07-05T00:12:52.957599Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:12:52.957599Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"pcMHu7h25/Da1e9DisoYm/VeZjvKujmkF5qiDauHaTcMefkZGXx/RJEWk4Z/fTHnkgrRhagDGqj/mv9sTXqKCQ==","signature_status":"signed_v1","signed_at":"2026-07-05T00:12:52.958066Z","signed_message":"canonical_sha256_bytes"},"source_id":"1908.01156","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:85c8cc6d8d3449345a2feefc19fed0c19c43e3e7fc8ef3a65569f97717a02abd","sha256:b36a1167f2ca3510f4316af5c80a9898011fd428b5d82f7cc99e24d781a3da86"],"state_sha256":"5ec449718d80f5e22a2df5ac5367fc61e5a792aa562fbff24324940b4af33783"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yUJgZfLRdQ8AiWlzi9zF9IKuvXccqj5fW1TOfggKAXFn/dWNaclRsLQBjf8HCWYTNleMbGoeLdvBak8vbs+VDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-08T01:09:41.189193Z","bundle_sha256":"c1d2e2848eb41ff6d152dc0c35e5921e8e8bb2fe84650b57dcbabf110768db37"}}