{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:3HNJ2Y3UMNPYKIAW3K54XMPWB3","short_pith_number":"pith:3HNJ2Y3U","canonical_record":{"source":{"id":"2607.28612","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ex","submitted_at":"2026-07-30T17:58:13Z","cross_cats_sorted":["nucl-ex"],"title_canon_sha256":"9c19cda5fd9b1db9b849c584c56a0c8c16196dbc954753e29792a2b05718f6ba","abstract_canon_sha256":"1659b653a716d6b9a8af48e841f3f3688c4fadc7e9e6975dfcf71f971ba7262f"},"schema_version":"1.0"},"canonical_sha256":"d9da9d6374635f852016dabbcbb1f60ee872e804ece5dc8c629c519364228f7b","source":{"kind":"arxiv","id":"2607.28612","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.28612","created_at":"2026-07-31T01:39:06Z"},{"alias_kind":"arxiv_version","alias_value":"2607.28612v1","created_at":"2026-07-31T01:39:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.28612","created_at":"2026-07-31T01:39:06Z"},{"alias_kind":"pith_short_12","alias_value":"3HNJ2Y3UMNPY","created_at":"2026-07-31T01:39:06Z"},{"alias_kind":"pith_short_16","alias_value":"3HNJ2Y3UMNPYKIAW","created_at":"2026-07-31T01:39:06Z"},{"alias_kind":"pith_short_8","alias_value":"3HNJ2Y3U","created_at":"2026-07-31T01:39:06Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:3HNJ2Y3UMNPYKIAW3K54XMPWB3","target":"record","payload":{"canonical_record":{"source":{"id":"2607.28612","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ex","submitted_at":"2026-07-30T17:58:13Z","cross_cats_sorted":["nucl-ex"],"title_canon_sha256":"9c19cda5fd9b1db9b849c584c56a0c8c16196dbc954753e29792a2b05718f6ba","abstract_canon_sha256":"1659b653a716d6b9a8af48e841f3f3688c4fadc7e9e6975dfcf71f971ba7262f"},"schema_version":"1.0"},"canonical_sha256":"d9da9d6374635f852016dabbcbb1f60ee872e804ece5dc8c629c519364228f7b","receipt":{"kind":"pith_receipt","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d9da9d6374635f852016dabbcbb1f60ee872e804ece5dc8c629c519364228f7b","last_reissued_at":"2026-07-31T01:39:06.527612Z","signature_status":"unsigned_v0","first_computed_at":"2026-07-31T01:39:06.527612Z"},"source_kind":"arxiv","source_id":"2607.28612","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":"2026-07-31T01:39:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GdhezQMSnMv7J/vieafOVgtK7So0B1ql3c0BL8Pz/d+k7HMbskGVOzn6zeaW8hCJHJ0kdN9FAOmWWbQ2z6XyBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T15:08:35.447586Z"},"content_sha256":"30f182e47b990aa5bd22361ee18fc35f68d1a1a7a786c1ab7371ca857f5268f9","schema_version":"1.0","event_id":"sha256:30f182e47b990aa5bd22361ee18fc35f68d1a1a7a786c1ab7371ca857f5268f9"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:3HNJ2Y3UMNPYKIAW3K54XMPWB3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Extraction of $\\sigma_{TT}$ for Proton, Neutron, Deuteron and $^3$He from Quasi-real Photon Scattering","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["nucl-ex"],"primary_cat":"hep-ex","authors_text":"A.Deur, A.Rask, B.Callahan, D.W.Upton, M.M.Dalton, O.Larson, X.Zheng, Yilei Li","submitted_at":"2026-07-30T17:58:13Z","abstract_excerpt":"We report on an extraction of the polarized photoproduction cross-section for the proton, deuteron, neutron and $^3$He, obtained by extrapolating electron scattering data to the real photon point. The data are from the Jefferson Lab E97-110 ($^3$He) and CLAS EG4 (proton and deuteron) experiments. Information on the neutron is extracted from the deuteron or $^3$He data using the weak binding approximation. Comparing with data obtained with real photons, we find that while the proton results agree, our results on the deuteron and the neutron exhibit a larger strength in the $\\Delta(1232)$ region"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.28612","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2607.28612/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":"2026-07-31T01:39:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"aAAn5HLCB/nMZllvuI9/oweuKzLY/EFVtjbtoc5cKRzUkbjrt4FnjjAH3NdS4fnpBtHwnLTiVUy8WY9mXkVuCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T15:08:35.447982Z"},"content_sha256":"c61f904b377ff869e22a004bf21c8c68f07229330ad2d670db5722518f3a8679","schema_version":"1.0","event_id":"sha256:c61f904b377ff869e22a004bf21c8c68f07229330ad2d670db5722518f3a8679"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/3HNJ2Y3UMNPYKIAW3K54XMPWB3/bundle.json","state_url":"https://pith.science/pith/3HNJ2Y3UMNPYKIAW3K54XMPWB3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/3HNJ2Y3UMNPYKIAW3K54XMPWB3/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":"2026-08-03T15:08:35Z","links":{"resolver":"https://pith.science/pith/3HNJ2Y3UMNPYKIAW3K54XMPWB3","bundle":"https://pith.science/pith/3HNJ2Y3UMNPYKIAW3K54XMPWB3/bundle.json","state":"https://pith.science/pith/3HNJ2Y3UMNPYKIAW3K54XMPWB3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/3HNJ2Y3UMNPYKIAW3K54XMPWB3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:3HNJ2Y3UMNPYKIAW3K54XMPWB3","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":"1659b653a716d6b9a8af48e841f3f3688c4fadc7e9e6975dfcf71f971ba7262f","cross_cats_sorted":["nucl-ex"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ex","submitted_at":"2026-07-30T17:58:13Z","title_canon_sha256":"9c19cda5fd9b1db9b849c584c56a0c8c16196dbc954753e29792a2b05718f6ba"},"schema_version":"1.0","source":{"id":"2607.28612","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.28612","created_at":"2026-07-31T01:39:06Z"},{"alias_kind":"arxiv_version","alias_value":"2607.28612v1","created_at":"2026-07-31T01:39:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.28612","created_at":"2026-07-31T01:39:06Z"},{"alias_kind":"pith_short_12","alias_value":"3HNJ2Y3UMNPY","created_at":"2026-07-31T01:39:06Z"},{"alias_kind":"pith_short_16","alias_value":"3HNJ2Y3UMNPYKIAW","created_at":"2026-07-31T01:39:06Z"},{"alias_kind":"pith_short_8","alias_value":"3HNJ2Y3U","created_at":"2026-07-31T01:39:06Z"}],"graph_snapshots":[{"event_id":"sha256:c61f904b377ff869e22a004bf21c8c68f07229330ad2d670db5722518f3a8679","target":"graph","created_at":"2026-07-31T01:39:06Z","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/2607.28612/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We report on an extraction of the polarized photoproduction cross-section for the proton, deuteron, neutron and $^3$He, obtained by extrapolating electron scattering data to the real photon point. The data are from the Jefferson Lab E97-110 ($^3$He) and CLAS EG4 (proton and deuteron) experiments. Information on the neutron is extracted from the deuteron or $^3$He data using the weak binding approximation. Comparing with data obtained with real photons, we find that while the proton results agree, our results on the deuteron and the neutron exhibit a larger strength in the $\\Delta(1232)$ region","authors_text":"A.Deur, A.Rask, B.Callahan, D.W.Upton, M.M.Dalton, O.Larson, X.Zheng, Yilei Li","cross_cats":["nucl-ex"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ex","submitted_at":"2026-07-30T17:58:13Z","title":"Extraction of $\\sigma_{TT}$ for Proton, Neutron, Deuteron and $^3$He from Quasi-real Photon Scattering"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.28612","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":"sha256:30f182e47b990aa5bd22361ee18fc35f68d1a1a7a786c1ab7371ca857f5268f9","target":"record","created_at":"2026-07-31T01:39:06Z","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":"1659b653a716d6b9a8af48e841f3f3688c4fadc7e9e6975dfcf71f971ba7262f","cross_cats_sorted":["nucl-ex"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ex","submitted_at":"2026-07-30T17:58:13Z","title_canon_sha256":"9c19cda5fd9b1db9b849c584c56a0c8c16196dbc954753e29792a2b05718f6ba"},"schema_version":"1.0","source":{"id":"2607.28612","kind":"arxiv","version":1}},"canonical_sha256":"d9da9d6374635f852016dabbcbb1f60ee872e804ece5dc8c629c519364228f7b","receipt":{"builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d9da9d6374635f852016dabbcbb1f60ee872e804ece5dc8c629c519364228f7b","first_computed_at":"2026-07-31T01:39:06.527612Z","kind":"pith_receipt","last_reissued_at":"2026-07-31T01:39:06.527612Z","receipt_version":"0.3","signature_status":"unsigned_v0"},"source_id":"2607.28612","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:30f182e47b990aa5bd22361ee18fc35f68d1a1a7a786c1ab7371ca857f5268f9","sha256:c61f904b377ff869e22a004bf21c8c68f07229330ad2d670db5722518f3a8679"],"state_sha256":"705d25305042e7b6ac2d6e99edf0ecb9f25fc787e58ef9876f4a4cb7862f8158"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"k2dqV06TqW3RNSi44Qo22gDzj/Xsg0qThY4k7K92lPtBwfhQxoUeni0p68P07+ZrvYGYkYI7eJ4f5ynFHOs0AA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-03T15:08:35.451037Z","bundle_sha256":"269fb08923ce944126d588ecaac0acb06f61c797b90c53bc22edf8b7d50d7438"}}