{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:UCXBMPQUMAE4AF5YKH33IHXQCP","short_pith_number":"pith:UCXBMPQU","canonical_record":{"source":{"id":"2402.19060","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ph","submitted_at":"2024-02-29T11:38:54Z","cross_cats_sorted":["hep-ex","nucl-ex"],"title_canon_sha256":"899c6bccfd66ed4de21fa83bc724b0ad273e934bd0468fff8163010ac50e0a82","abstract_canon_sha256":"394ad40bfbfeaf494623e8aea47ca9f96f7b891cee3b059dca1fb9cc3cec0583"},"schema_version":"1.0"},"canonical_sha256":"a0ae163e146009c017b851f7b41ef013c2ac6db4d1dbdbf2dfae108ad9dbee37","source":{"kind":"arxiv","id":"2402.19060","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2402.19060","created_at":"2026-07-05T08:38:57Z"},{"alias_kind":"arxiv_version","alias_value":"2402.19060v2","created_at":"2026-07-05T08:38:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2402.19060","created_at":"2026-07-05T08:38:57Z"},{"alias_kind":"pith_short_12","alias_value":"UCXBMPQUMAE4","created_at":"2026-07-05T08:38:57Z"},{"alias_kind":"pith_short_16","alias_value":"UCXBMPQUMAE4AF5Y","created_at":"2026-07-05T08:38:57Z"},{"alias_kind":"pith_short_8","alias_value":"UCXBMPQU","created_at":"2026-07-05T08:38:57Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:UCXBMPQUMAE4AF5YKH33IHXQCP","target":"record","payload":{"canonical_record":{"source":{"id":"2402.19060","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ph","submitted_at":"2024-02-29T11:38:54Z","cross_cats_sorted":["hep-ex","nucl-ex"],"title_canon_sha256":"899c6bccfd66ed4de21fa83bc724b0ad273e934bd0468fff8163010ac50e0a82","abstract_canon_sha256":"394ad40bfbfeaf494623e8aea47ca9f96f7b891cee3b059dca1fb9cc3cec0583"},"schema_version":"1.0"},"canonical_sha256":"a0ae163e146009c017b851f7b41ef013c2ac6db4d1dbdbf2dfae108ad9dbee37","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T08:38:57.817509Z","signature_b64":"cmOt8Y9/T/zqObCh2uzOdII2aPcKQC/LTB/oEq2VQdvBkpE+zaHRRCOwI2WkwcZN2pivMW0TZDUWREkYsJZwAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a0ae163e146009c017b851f7b41ef013c2ac6db4d1dbdbf2dfae108ad9dbee37","last_reissued_at":"2026-07-05T08:38:57.817031Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T08:38:57.817031Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2402.19060","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":"2026-07-05T08:38:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uoZbTyyfNvSvN4FTAIiX58FnLvWiYu8SKrjgbx20pJ+ulHJPrUgFZKn8N4uGnGT8RXwzVjg3WxObt+cIWS1ICQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-18T10:09:23.164542Z"},"content_sha256":"0e3e783ace6dc754bec24c923b5d991f239b87b70e3e5cfc15e49a37db35bda3","schema_version":"1.0","event_id":"sha256:0e3e783ace6dc754bec24c923b5d991f239b87b70e3e5cfc15e49a37db35bda3"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:UCXBMPQUMAE4AF5YKH33IHXQCP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Slicing Pomerons in ultraperipheral collisions using forward neutrons from nuclear breakup","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["hep-ex","nucl-ex"],"primary_cat":"hep-ph","authors_text":"Helsinki Inst. of Phys.), INFN, M. Alvioli (CNR IRPI, M. Strikman (Penn State U.), Perugia, Perugia), V. Guzey (Jyvaskyla U.","submitted_at":"2024-02-29T11:38:54Z","abstract_excerpt":"We argue that measurements of forward neutrons from nuclear breakup in inclusive high energy photon-nucleus ($\\gamma A$) scattering provide a novel way to study small-$x$ dynamics of QCD in heavy-ion ultraperipheral collisions (UPCs). Using models for hadronic fluctuations of the real photon and neutron emission in nuclear fragmentation, we calculate the distribution over the number of evaporation neutrons produced in $\\gamma Pb$ collisions at the LHC. We show that it is correlated with the number of wounded nucleons (inelastic collisions) and, hence, can constrain the mechanism of nuclear sha"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2402.19060","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/2402.19060/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":"2026-07-05T08:38:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BjAQ3SKs7Xp5iVNT6srYjMKkIGhRrWZbZLpjXgJQtq40q5pMo6Ih6crv8Q0yS3VjyfrE8pfmJxvDwO52F86FAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-18T10:09:23.165043Z"},"content_sha256":"ae1027055a8b84da21e0a0ad6af29addb19156a31c0db39156ade6e2c5e8d46b","schema_version":"1.0","event_id":"sha256:ae1027055a8b84da21e0a0ad6af29addb19156a31c0db39156ade6e2c5e8d46b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/UCXBMPQUMAE4AF5YKH33IHXQCP/bundle.json","state_url":"https://pith.science/pith/UCXBMPQUMAE4AF5YKH33IHXQCP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/UCXBMPQUMAE4AF5YKH33IHXQCP/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":"2026-08-18T10:09:23Z","links":{"resolver":"https://pith.science/pith/UCXBMPQUMAE4AF5YKH33IHXQCP","bundle":"https://pith.science/pith/UCXBMPQUMAE4AF5YKH33IHXQCP/bundle.json","state":"https://pith.science/pith/UCXBMPQUMAE4AF5YKH33IHXQCP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/UCXBMPQUMAE4AF5YKH33IHXQCP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:UCXBMPQUMAE4AF5YKH33IHXQCP","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":"394ad40bfbfeaf494623e8aea47ca9f96f7b891cee3b059dca1fb9cc3cec0583","cross_cats_sorted":["hep-ex","nucl-ex"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ph","submitted_at":"2024-02-29T11:38:54Z","title_canon_sha256":"899c6bccfd66ed4de21fa83bc724b0ad273e934bd0468fff8163010ac50e0a82"},"schema_version":"1.0","source":{"id":"2402.19060","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2402.19060","created_at":"2026-07-05T08:38:57Z"},{"alias_kind":"arxiv_version","alias_value":"2402.19060v2","created_at":"2026-07-05T08:38:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2402.19060","created_at":"2026-07-05T08:38:57Z"},{"alias_kind":"pith_short_12","alias_value":"UCXBMPQUMAE4","created_at":"2026-07-05T08:38:57Z"},{"alias_kind":"pith_short_16","alias_value":"UCXBMPQUMAE4AF5Y","created_at":"2026-07-05T08:38:57Z"},{"alias_kind":"pith_short_8","alias_value":"UCXBMPQU","created_at":"2026-07-05T08:38:57Z"}],"graph_snapshots":[{"event_id":"sha256:ae1027055a8b84da21e0a0ad6af29addb19156a31c0db39156ade6e2c5e8d46b","target":"graph","created_at":"2026-07-05T08:38:57Z","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/2402.19060/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We argue that measurements of forward neutrons from nuclear breakup in inclusive high energy photon-nucleus ($\\gamma A$) scattering provide a novel way to study small-$x$ dynamics of QCD in heavy-ion ultraperipheral collisions (UPCs). Using models for hadronic fluctuations of the real photon and neutron emission in nuclear fragmentation, we calculate the distribution over the number of evaporation neutrons produced in $\\gamma Pb$ collisions at the LHC. We show that it is correlated with the number of wounded nucleons (inelastic collisions) and, hence, can constrain the mechanism of nuclear sha","authors_text":"Helsinki Inst. of Phys.), INFN, M. Alvioli (CNR IRPI, M. Strikman (Penn State U.), Perugia, Perugia), V. Guzey (Jyvaskyla U.","cross_cats":["hep-ex","nucl-ex"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ph","submitted_at":"2024-02-29T11:38:54Z","title":"Slicing Pomerons in ultraperipheral collisions using forward neutrons from nuclear breakup"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2402.19060","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":"sha256:0e3e783ace6dc754bec24c923b5d991f239b87b70e3e5cfc15e49a37db35bda3","target":"record","created_at":"2026-07-05T08:38:57Z","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":"394ad40bfbfeaf494623e8aea47ca9f96f7b891cee3b059dca1fb9cc3cec0583","cross_cats_sorted":["hep-ex","nucl-ex"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ph","submitted_at":"2024-02-29T11:38:54Z","title_canon_sha256":"899c6bccfd66ed4de21fa83bc724b0ad273e934bd0468fff8163010ac50e0a82"},"schema_version":"1.0","source":{"id":"2402.19060","kind":"arxiv","version":2}},"canonical_sha256":"a0ae163e146009c017b851f7b41ef013c2ac6db4d1dbdbf2dfae108ad9dbee37","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a0ae163e146009c017b851f7b41ef013c2ac6db4d1dbdbf2dfae108ad9dbee37","first_computed_at":"2026-07-05T08:38:57.817031Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T08:38:57.817031Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"cmOt8Y9/T/zqObCh2uzOdII2aPcKQC/LTB/oEq2VQdvBkpE+zaHRRCOwI2WkwcZN2pivMW0TZDUWREkYsJZwAA==","signature_status":"signed_v1","signed_at":"2026-07-05T08:38:57.817509Z","signed_message":"canonical_sha256_bytes"},"source_id":"2402.19060","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0e3e783ace6dc754bec24c923b5d991f239b87b70e3e5cfc15e49a37db35bda3","sha256:ae1027055a8b84da21e0a0ad6af29addb19156a31c0db39156ade6e2c5e8d46b"],"state_sha256":"bc66f7e7e5a79c66249838d3410ea8876833704cc45438f86db7bea7ab130e18"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1580gscRYQjLxjNugztTbnLV5nH3+Fj7yuThbzmwnOA6/o0ZelyPF9xyE50i6JX7m1wUnkbwhBYUmBXMcZ1XAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-18T10:09:23.170000Z","bundle_sha256":"1584c1d55a28e705b251939bd9b228e8ff774fc6385e0eff2515899bd80f49d0"}}