{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:PMPZBBSJYETZ3AD7PZFLS3Q6UX","short_pith_number":"pith:PMPZBBSJ","canonical_record":{"source":{"id":"1901.07019","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2019-01-21T18:14:12Z","cross_cats_sorted":[],"title_canon_sha256":"e33e2f8071e934e6928cda4dbe15eda5cb4f9e3951225635c09dd577a49becf9","abstract_canon_sha256":"a470d1c1346868ffb6f7dd292bda15d979f12002369df7fd59914b43f6b20a32"},"schema_version":"1.0"},"canonical_sha256":"7b1f908649c1279d807f7e4ab96e1ea5dead207bcb7cf1a76a8e6eaef2c30caa","source":{"kind":"arxiv","id":"1901.07019","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1901.07019","created_at":"2026-05-17T23:55:48Z"},{"alias_kind":"arxiv_version","alias_value":"1901.07019v1","created_at":"2026-05-17T23:55:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1901.07019","created_at":"2026-05-17T23:55:48Z"},{"alias_kind":"pith_short_12","alias_value":"PMPZBBSJYETZ","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_16","alias_value":"PMPZBBSJYETZ3AD7","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_8","alias_value":"PMPZBBSJ","created_at":"2026-05-18T12:33:24Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:PMPZBBSJYETZ3AD7PZFLS3Q6UX","target":"record","payload":{"canonical_record":{"source":{"id":"1901.07019","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2019-01-21T18:14:12Z","cross_cats_sorted":[],"title_canon_sha256":"e33e2f8071e934e6928cda4dbe15eda5cb4f9e3951225635c09dd577a49becf9","abstract_canon_sha256":"a470d1c1346868ffb6f7dd292bda15d979f12002369df7fd59914b43f6b20a32"},"schema_version":"1.0"},"canonical_sha256":"7b1f908649c1279d807f7e4ab96e1ea5dead207bcb7cf1a76a8e6eaef2c30caa","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:55:48.398284Z","signature_b64":"KL+jaJ1Mem+eXQ7T2ZksXtk1AvcR2TYrcI5pASLzFNfqSzp6RT3x0yAqU/p4N6j4CRI0wMbjPHyZNl2avJOzAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7b1f908649c1279d807f7e4ab96e1ea5dead207bcb7cf1a76a8e6eaef2c30caa","last_reissued_at":"2026-05-17T23:55:48.397615Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:55:48.397615Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1901.07019","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":"2026-05-17T23:55:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/X4V11mbNeedcsAspvcOn+s3sMrcydjPRRQEf1t4+NfbsbGbTDVdishtrpNaxmoEDY5k4xAwr/g2J+9F/a0KBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T07:50:00.980504Z"},"content_sha256":"4e1589162d569b8b4cd8a074b977abede6c407a2df861e23068a2391064e6f50","schema_version":"1.0","event_id":"sha256:4e1589162d569b8b4cd8a074b977abede6c407a2df861e23068a2391064e6f50"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:PMPZBBSJYETZ3AD7PZFLS3Q6UX","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Centrality dependence of the direct photon multiplicity in heavy ion collisions","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"nucl-th","authors_text":"Charles Gale, Chun Shen, Jean-Fran\\c{c}ois Paquet, Sangyong Jeon, Scott McDonald","submitted_at":"2019-01-21T18:14:12Z","abstract_excerpt":"Measurements indicate that the centrality dependence of the direct photon multiplicity scales approximately with the number of binary nucleon collisions. Importantly, these same measurements suggest that this scaling does not depend on the cutoff used to define the photon multiplicity. In this work we provide a theoretical perspective on these observations. We emphasize the importance of stronger experimental constraints, in particular for the cutoff independence of the centrality scaling. We highlight the importance of revisiting theoretical studies of jet-medium photons and of medium-modifie"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.07019","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":"2026-05-17T23:55:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rvdnPw0FGhBWYBxVvSSIwhIPscDl0cUvSH4LP25SzEOx2y0rowuyD0/m9YvUgkOsq9IG7JTM7mci2t27wCENAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T07:50:00.980861Z"},"content_sha256":"26b8bc2ae24547aae3e536828068a2ff06b9aa4e3fa0dcd669e76c7719d6ed05","schema_version":"1.0","event_id":"sha256:26b8bc2ae24547aae3e536828068a2ff06b9aa4e3fa0dcd669e76c7719d6ed05"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PMPZBBSJYETZ3AD7PZFLS3Q6UX/bundle.json","state_url":"https://pith.science/pith/PMPZBBSJYETZ3AD7PZFLS3Q6UX/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PMPZBBSJYETZ3AD7PZFLS3Q6UX/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":"2026-06-01T07:50:00Z","links":{"resolver":"https://pith.science/pith/PMPZBBSJYETZ3AD7PZFLS3Q6UX","bundle":"https://pith.science/pith/PMPZBBSJYETZ3AD7PZFLS3Q6UX/bundle.json","state":"https://pith.science/pith/PMPZBBSJYETZ3AD7PZFLS3Q6UX/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PMPZBBSJYETZ3AD7PZFLS3Q6UX/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:PMPZBBSJYETZ3AD7PZFLS3Q6UX","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":"a470d1c1346868ffb6f7dd292bda15d979f12002369df7fd59914b43f6b20a32","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2019-01-21T18:14:12Z","title_canon_sha256":"e33e2f8071e934e6928cda4dbe15eda5cb4f9e3951225635c09dd577a49becf9"},"schema_version":"1.0","source":{"id":"1901.07019","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1901.07019","created_at":"2026-05-17T23:55:48Z"},{"alias_kind":"arxiv_version","alias_value":"1901.07019v1","created_at":"2026-05-17T23:55:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1901.07019","created_at":"2026-05-17T23:55:48Z"},{"alias_kind":"pith_short_12","alias_value":"PMPZBBSJYETZ","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_16","alias_value":"PMPZBBSJYETZ3AD7","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_8","alias_value":"PMPZBBSJ","created_at":"2026-05-18T12:33:24Z"}],"graph_snapshots":[{"event_id":"sha256:26b8bc2ae24547aae3e536828068a2ff06b9aa4e3fa0dcd669e76c7719d6ed05","target":"graph","created_at":"2026-05-17T23:55:48Z","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":"Measurements indicate that the centrality dependence of the direct photon multiplicity scales approximately with the number of binary nucleon collisions. Importantly, these same measurements suggest that this scaling does not depend on the cutoff used to define the photon multiplicity. In this work we provide a theoretical perspective on these observations. We emphasize the importance of stronger experimental constraints, in particular for the cutoff independence of the centrality scaling. We highlight the importance of revisiting theoretical studies of jet-medium photons and of medium-modifie","authors_text":"Charles Gale, Chun Shen, Jean-Fran\\c{c}ois Paquet, Sangyong Jeon, Scott McDonald","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2019-01-21T18:14:12Z","title":"Centrality dependence of the direct photon multiplicity in heavy ion collisions"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.07019","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":"sha256:4e1589162d569b8b4cd8a074b977abede6c407a2df861e23068a2391064e6f50","target":"record","created_at":"2026-05-17T23:55:48Z","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":"a470d1c1346868ffb6f7dd292bda15d979f12002369df7fd59914b43f6b20a32","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2019-01-21T18:14:12Z","title_canon_sha256":"e33e2f8071e934e6928cda4dbe15eda5cb4f9e3951225635c09dd577a49becf9"},"schema_version":"1.0","source":{"id":"1901.07019","kind":"arxiv","version":1}},"canonical_sha256":"7b1f908649c1279d807f7e4ab96e1ea5dead207bcb7cf1a76a8e6eaef2c30caa","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7b1f908649c1279d807f7e4ab96e1ea5dead207bcb7cf1a76a8e6eaef2c30caa","first_computed_at":"2026-05-17T23:55:48.397615Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:55:48.397615Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"KL+jaJ1Mem+eXQ7T2ZksXtk1AvcR2TYrcI5pASLzFNfqSzp6RT3x0yAqU/p4N6j4CRI0wMbjPHyZNl2avJOzAw==","signature_status":"signed_v1","signed_at":"2026-05-17T23:55:48.398284Z","signed_message":"canonical_sha256_bytes"},"source_id":"1901.07019","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4e1589162d569b8b4cd8a074b977abede6c407a2df861e23068a2391064e6f50","sha256:26b8bc2ae24547aae3e536828068a2ff06b9aa4e3fa0dcd669e76c7719d6ed05"],"state_sha256":"2917f2cdf8492d0199347bc6598d6c676ccf97e50db4d74555a6c90f79a46e20"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UTKygNRElLJLve5hbU7N89Z0mxSRPZrIj5Bc6rq6wZuP2ibcJArxeqTCyF42+zQf7d+43WqDAGFKOEhi/X8TDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T07:50:00.982780Z","bundle_sha256":"705c1a3b3ffb7c46666d6368374ce903a5b7fe544c9a38492d7f66919484e502"}}