{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:QOIPRA2UMJ7SPROFFXSLMSPFRU","short_pith_number":"pith:QOIPRA2U","canonical_record":{"source":{"id":"1809.08104","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2018-09-20T09:18:53Z","cross_cats_sorted":["hep-ex","nucl-ex","nucl-th"],"title_canon_sha256":"3900fcd5122ce6ec4228bfc01838171b68f982518a9ee1cb03c7941fcb539bc5","abstract_canon_sha256":"13f78ac0f3af18e91d77e0a072a4e9d24b30158df676c72988e8a055eb3ef3f5"},"schema_version":"1.0"},"canonical_sha256":"8390f88354627f27c5c52de4b649e58d0766f14fc9b8dc232e64b3ff853f6033","source":{"kind":"arxiv","id":"1809.08104","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1809.08104","created_at":"2026-05-17T23:57:39Z"},{"alias_kind":"arxiv_version","alias_value":"1809.08104v1","created_at":"2026-05-17T23:57:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1809.08104","created_at":"2026-05-17T23:57:39Z"},{"alias_kind":"pith_short_12","alias_value":"QOIPRA2UMJ7S","created_at":"2026-05-18T12:32:46Z"},{"alias_kind":"pith_short_16","alias_value":"QOIPRA2UMJ7SPROF","created_at":"2026-05-18T12:32:46Z"},{"alias_kind":"pith_short_8","alias_value":"QOIPRA2U","created_at":"2026-05-18T12:32:46Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:QOIPRA2UMJ7SPROFFXSLMSPFRU","target":"record","payload":{"canonical_record":{"source":{"id":"1809.08104","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2018-09-20T09:18:53Z","cross_cats_sorted":["hep-ex","nucl-ex","nucl-th"],"title_canon_sha256":"3900fcd5122ce6ec4228bfc01838171b68f982518a9ee1cb03c7941fcb539bc5","abstract_canon_sha256":"13f78ac0f3af18e91d77e0a072a4e9d24b30158df676c72988e8a055eb3ef3f5"},"schema_version":"1.0"},"canonical_sha256":"8390f88354627f27c5c52de4b649e58d0766f14fc9b8dc232e64b3ff853f6033","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:57:39.878728Z","signature_b64":"+XvM37+Vog2N7xk1IJaz1WV4cJPmRnYZ+fNCk4AL8+Y0xVeYssT1+8sKLJqoGhwl3gU4vcphJtrMx7z6QfmkDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8390f88354627f27c5c52de4b649e58d0766f14fc9b8dc232e64b3ff853f6033","last_reissued_at":"2026-05-17T23:57:39.878343Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:57:39.878343Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1809.08104","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":"2026-05-17T23:57:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"s/RmVVFb4DBg/nhFRAW24JXLE5/laANGsacqroYb9hx+PoBxIXMDdq30AKsZZJquTvm/kab7AkUoOX/8DTGDBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T17:53:36.994532Z"},"content_sha256":"1ceb83d3ce4bc4ebd56dc1eae8994a5ba98f216f790d07708aea23e319b381fd","schema_version":"1.0","event_id":"sha256:1ceb83d3ce4bc4ebd56dc1eae8994a5ba98f216f790d07708aea23e319b381fd"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:QOIPRA2UMJ7SPROFFXSLMSPFRU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Probing axial quark generalized parton distributions through exclusive photoproduction of a $\\gamma\\,\\pi^\\pm$ pair with a large invariant mass","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex","nucl-ex","nucl-th"],"primary_cat":"hep-ph","authors_text":"B.Pire, G.Duplan\\v{c}i\\'c, K.Passek-Kumeri\\v{c}ki, L.Szymanowski, S.Wallon","submitted_at":"2018-09-20T09:18:53Z","abstract_excerpt":"Exclusive photoproduction of a $\\gamma\\,\\pi^\\pm$ pair in the kinematics where the pair has a large invariant mass and the final nucleon has a small transverse momentum is described in the collinear factorization framework. The scattering amplitude is calculated at leading order in $\\alpha_s$ and the differential cross sections for the process are estimated in the kinematics of the JLab~12-GeV experiments. The order of magnitude of the predicted cross-sections seems sufficient for a dedicated experiment to be performed. The process turns out to be very sensitive to the axial generalized parton "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1809.08104","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":"2026-05-17T23:57:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"t5FaqOAQ8ThshsjoFBUEjMM3bwpi8AJF7xHwau7fT8g/vohVoV89cjAkNxheojLQQuvZ7+fEiG3KmgwTXiICDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T17:53:36.994881Z"},"content_sha256":"c77703c07e17b1adbc6afe2184f1b850d25ce82667780b2315744205f57295bc","schema_version":"1.0","event_id":"sha256:c77703c07e17b1adbc6afe2184f1b850d25ce82667780b2315744205f57295bc"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QOIPRA2UMJ7SPROFFXSLMSPFRU/bundle.json","state_url":"https://pith.science/pith/QOIPRA2UMJ7SPROFFXSLMSPFRU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QOIPRA2UMJ7SPROFFXSLMSPFRU/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":"2026-06-01T17:53:36Z","links":{"resolver":"https://pith.science/pith/QOIPRA2UMJ7SPROFFXSLMSPFRU","bundle":"https://pith.science/pith/QOIPRA2UMJ7SPROFFXSLMSPFRU/bundle.json","state":"https://pith.science/pith/QOIPRA2UMJ7SPROFFXSLMSPFRU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QOIPRA2UMJ7SPROFFXSLMSPFRU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:QOIPRA2UMJ7SPROFFXSLMSPFRU","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":"13f78ac0f3af18e91d77e0a072a4e9d24b30158df676c72988e8a055eb3ef3f5","cross_cats_sorted":["hep-ex","nucl-ex","nucl-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2018-09-20T09:18:53Z","title_canon_sha256":"3900fcd5122ce6ec4228bfc01838171b68f982518a9ee1cb03c7941fcb539bc5"},"schema_version":"1.0","source":{"id":"1809.08104","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1809.08104","created_at":"2026-05-17T23:57:39Z"},{"alias_kind":"arxiv_version","alias_value":"1809.08104v1","created_at":"2026-05-17T23:57:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1809.08104","created_at":"2026-05-17T23:57:39Z"},{"alias_kind":"pith_short_12","alias_value":"QOIPRA2UMJ7S","created_at":"2026-05-18T12:32:46Z"},{"alias_kind":"pith_short_16","alias_value":"QOIPRA2UMJ7SPROF","created_at":"2026-05-18T12:32:46Z"},{"alias_kind":"pith_short_8","alias_value":"QOIPRA2U","created_at":"2026-05-18T12:32:46Z"}],"graph_snapshots":[{"event_id":"sha256:c77703c07e17b1adbc6afe2184f1b850d25ce82667780b2315744205f57295bc","target":"graph","created_at":"2026-05-17T23:57:39Z","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":"Exclusive photoproduction of a $\\gamma\\,\\pi^\\pm$ pair in the kinematics where the pair has a large invariant mass and the final nucleon has a small transverse momentum is described in the collinear factorization framework. The scattering amplitude is calculated at leading order in $\\alpha_s$ and the differential cross sections for the process are estimated in the kinematics of the JLab~12-GeV experiments. The order of magnitude of the predicted cross-sections seems sufficient for a dedicated experiment to be performed. The process turns out to be very sensitive to the axial generalized parton ","authors_text":"B.Pire, G.Duplan\\v{c}i\\'c, K.Passek-Kumeri\\v{c}ki, L.Szymanowski, S.Wallon","cross_cats":["hep-ex","nucl-ex","nucl-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2018-09-20T09:18:53Z","title":"Probing axial quark generalized parton distributions through exclusive photoproduction of a $\\gamma\\,\\pi^\\pm$ pair with a large invariant mass"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1809.08104","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":"sha256:1ceb83d3ce4bc4ebd56dc1eae8994a5ba98f216f790d07708aea23e319b381fd","target":"record","created_at":"2026-05-17T23:57:39Z","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":"13f78ac0f3af18e91d77e0a072a4e9d24b30158df676c72988e8a055eb3ef3f5","cross_cats_sorted":["hep-ex","nucl-ex","nucl-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2018-09-20T09:18:53Z","title_canon_sha256":"3900fcd5122ce6ec4228bfc01838171b68f982518a9ee1cb03c7941fcb539bc5"},"schema_version":"1.0","source":{"id":"1809.08104","kind":"arxiv","version":1}},"canonical_sha256":"8390f88354627f27c5c52de4b649e58d0766f14fc9b8dc232e64b3ff853f6033","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8390f88354627f27c5c52de4b649e58d0766f14fc9b8dc232e64b3ff853f6033","first_computed_at":"2026-05-17T23:57:39.878343Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:57:39.878343Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"+XvM37+Vog2N7xk1IJaz1WV4cJPmRnYZ+fNCk4AL8+Y0xVeYssT1+8sKLJqoGhwl3gU4vcphJtrMx7z6QfmkDw==","signature_status":"signed_v1","signed_at":"2026-05-17T23:57:39.878728Z","signed_message":"canonical_sha256_bytes"},"source_id":"1809.08104","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1ceb83d3ce4bc4ebd56dc1eae8994a5ba98f216f790d07708aea23e319b381fd","sha256:c77703c07e17b1adbc6afe2184f1b850d25ce82667780b2315744205f57295bc"],"state_sha256":"d0bc7667f544f3656b4ba2189b080bfedd33932fe3ef63887fc61ae53dc3b62a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QoU6WSM4huO0gJysiWDv9EkcXFUuxZjmOKbPEHmI9C4pildO3us6HN68GfN1kOn41uVOdaIlSxOiEtjLVZgdAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T17:53:36.996906Z","bundle_sha256":"4ad3fafe5faa74bfcb826f1654a9768abe0a1c86065ab078501b064a46d31c25"}}