{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:TYEYAKAV3QJIN2334TA57R7W7I","short_pith_number":"pith:TYEYAKAV","canonical_record":{"source":{"id":"2107.04544","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by-sa/4.0/","primary_cat":"hep-ph","submitted_at":"2021-07-09T16:59:06Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"cbbbb3c8cfa586903a85d4aa7b8d017ce161f6e6940c1800ebb4184c8ef1cdda","abstract_canon_sha256":"b30bd276fc5668563824053869c0861db2a69d01d1fad26fb5dc9b62133f07f8"},"schema_version":"1.0"},"canonical_sha256":"9e09802815dc1286eb7be4c1dfc7f6fa2b2d8e1bee3790a1361e79308ca12629","source":{"kind":"arxiv","id":"2107.04544","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2107.04544","created_at":"2026-07-05T04:08:15Z"},{"alias_kind":"arxiv_version","alias_value":"2107.04544v2","created_at":"2026-07-05T04:08:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2107.04544","created_at":"2026-07-05T04:08:15Z"},{"alias_kind":"pith_short_12","alias_value":"TYEYAKAV3QJI","created_at":"2026-07-05T04:08:15Z"},{"alias_kind":"pith_short_16","alias_value":"TYEYAKAV3QJIN233","created_at":"2026-07-05T04:08:15Z"},{"alias_kind":"pith_short_8","alias_value":"TYEYAKAV","created_at":"2026-07-05T04:08:15Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:TYEYAKAV3QJIN2334TA57R7W7I","target":"record","payload":{"canonical_record":{"source":{"id":"2107.04544","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by-sa/4.0/","primary_cat":"hep-ph","submitted_at":"2021-07-09T16:59:06Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"cbbbb3c8cfa586903a85d4aa7b8d017ce161f6e6940c1800ebb4184c8ef1cdda","abstract_canon_sha256":"b30bd276fc5668563824053869c0861db2a69d01d1fad26fb5dc9b62133f07f8"},"schema_version":"1.0"},"canonical_sha256":"9e09802815dc1286eb7be4c1dfc7f6fa2b2d8e1bee3790a1361e79308ca12629","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:08:15.736476Z","signature_b64":"QVC5hwvXYc5DvDA/N7rrSJRysqPS6up0QR6L1lRW8Fphkvp4B7PymK+N5m9BlpJW8TBcbXyR8hXBCAznZaBfBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9e09802815dc1286eb7be4c1dfc7f6fa2b2d8e1bee3790a1361e79308ca12629","last_reissued_at":"2026-07-05T04:08:15.735984Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:08:15.735984Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2107.04544","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":"2026-07-05T04:08:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xXVoS5KCxqHKMWomOT/DN3g52g/x3L5WZOYfD1+7LbcorMoBmxpiPkjTFKWm+L0Gmb+IfOTOqTdGE2JM/uk1CQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-09T13:44:56.859010Z"},"content_sha256":"c2f21410c4154763e45b68a937f1f217b4dec8d6e7f56d7bdef8fd5152d2d6d3","schema_version":"1.0","event_id":"sha256:c2f21410c4154763e45b68a937f1f217b4dec8d6e7f56d7bdef8fd5152d2d6d3"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:TYEYAKAV3QJIN2334TA57R7W7I","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Wide-angle photo- and electroproduction of pions to twist-3 accuracy","license":"http://creativecommons.org/licenses/by-sa/4.0/","headline":"","cross_cats":["hep-ex"],"primary_cat":"hep-ph","authors_text":"Kornelija Passek-Kumeri\\v{c}ki, Peter Kroll","submitted_at":"2021-07-09T16:59:06Z","abstract_excerpt":"We investigate wide-angle photo- and electroproduction of pions within the handbag mechanism in which the $\\gamma^{(*)} N\\to \\pi N'$ amplitudes factorize into hard partonic subprocess amplitudes, $\\gamma^{(*)} q\\to \\pi q'$, and form factors representing $1/x$-moments of generalized parton distributions (GPDs). The subprocess is calculated to twist-3 accuracy taking into account the 2- and 3-body Fock components of the pion. Both components are required for achieving gauge invariance in QED and QCD. The twist-2 and twist-3 distribution amplitudes (DAs) of the pion as well as the form factors ar"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2107.04544","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/2107.04544/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":"2026-07-05T04:08:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SBeg4kS+ab2bagBNeh7978Xry6nzxkaGr9Abxug2SWfn198f7Ewn4vcUpgTMd/Y/+4d4XdZZb6moK4u+/BW+Cw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-09T13:44:56.859930Z"},"content_sha256":"776625bce941e65913c93cc3138f597f400c9bbe0fbcd1ff67253dcffda9d105","schema_version":"1.0","event_id":"sha256:776625bce941e65913c93cc3138f597f400c9bbe0fbcd1ff67253dcffda9d105"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/TYEYAKAV3QJIN2334TA57R7W7I/bundle.json","state_url":"https://pith.science/pith/TYEYAKAV3QJIN2334TA57R7W7I/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/TYEYAKAV3QJIN2334TA57R7W7I/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":"2026-08-09T13:44:56Z","links":{"resolver":"https://pith.science/pith/TYEYAKAV3QJIN2334TA57R7W7I","bundle":"https://pith.science/pith/TYEYAKAV3QJIN2334TA57R7W7I/bundle.json","state":"https://pith.science/pith/TYEYAKAV3QJIN2334TA57R7W7I/state.json","well_known_bundle":"https://pith.science/.well-known/pith/TYEYAKAV3QJIN2334TA57R7W7I/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:TYEYAKAV3QJIN2334TA57R7W7I","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":"b30bd276fc5668563824053869c0861db2a69d01d1fad26fb5dc9b62133f07f8","cross_cats_sorted":["hep-ex"],"license":"http://creativecommons.org/licenses/by-sa/4.0/","primary_cat":"hep-ph","submitted_at":"2021-07-09T16:59:06Z","title_canon_sha256":"cbbbb3c8cfa586903a85d4aa7b8d017ce161f6e6940c1800ebb4184c8ef1cdda"},"schema_version":"1.0","source":{"id":"2107.04544","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2107.04544","created_at":"2026-07-05T04:08:15Z"},{"alias_kind":"arxiv_version","alias_value":"2107.04544v2","created_at":"2026-07-05T04:08:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2107.04544","created_at":"2026-07-05T04:08:15Z"},{"alias_kind":"pith_short_12","alias_value":"TYEYAKAV3QJI","created_at":"2026-07-05T04:08:15Z"},{"alias_kind":"pith_short_16","alias_value":"TYEYAKAV3QJIN233","created_at":"2026-07-05T04:08:15Z"},{"alias_kind":"pith_short_8","alias_value":"TYEYAKAV","created_at":"2026-07-05T04:08:15Z"}],"graph_snapshots":[{"event_id":"sha256:776625bce941e65913c93cc3138f597f400c9bbe0fbcd1ff67253dcffda9d105","target":"graph","created_at":"2026-07-05T04:08:15Z","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/2107.04544/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We investigate wide-angle photo- and electroproduction of pions within the handbag mechanism in which the $\\gamma^{(*)} N\\to \\pi N'$ amplitudes factorize into hard partonic subprocess amplitudes, $\\gamma^{(*)} q\\to \\pi q'$, and form factors representing $1/x$-moments of generalized parton distributions (GPDs). The subprocess is calculated to twist-3 accuracy taking into account the 2- and 3-body Fock components of the pion. Both components are required for achieving gauge invariance in QED and QCD. The twist-2 and twist-3 distribution amplitudes (DAs) of the pion as well as the form factors ar","authors_text":"Kornelija Passek-Kumeri\\v{c}ki, Peter Kroll","cross_cats":["hep-ex"],"headline":"","license":"http://creativecommons.org/licenses/by-sa/4.0/","primary_cat":"hep-ph","submitted_at":"2021-07-09T16:59:06Z","title":"Wide-angle photo- and electroproduction of pions to twist-3 accuracy"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2107.04544","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:c2f21410c4154763e45b68a937f1f217b4dec8d6e7f56d7bdef8fd5152d2d6d3","target":"record","created_at":"2026-07-05T04:08:15Z","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":"b30bd276fc5668563824053869c0861db2a69d01d1fad26fb5dc9b62133f07f8","cross_cats_sorted":["hep-ex"],"license":"http://creativecommons.org/licenses/by-sa/4.0/","primary_cat":"hep-ph","submitted_at":"2021-07-09T16:59:06Z","title_canon_sha256":"cbbbb3c8cfa586903a85d4aa7b8d017ce161f6e6940c1800ebb4184c8ef1cdda"},"schema_version":"1.0","source":{"id":"2107.04544","kind":"arxiv","version":2}},"canonical_sha256":"9e09802815dc1286eb7be4c1dfc7f6fa2b2d8e1bee3790a1361e79308ca12629","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9e09802815dc1286eb7be4c1dfc7f6fa2b2d8e1bee3790a1361e79308ca12629","first_computed_at":"2026-07-05T04:08:15.735984Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:08:15.735984Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"QVC5hwvXYc5DvDA/N7rrSJRysqPS6up0QR6L1lRW8Fphkvp4B7PymK+N5m9BlpJW8TBcbXyR8hXBCAznZaBfBQ==","signature_status":"signed_v1","signed_at":"2026-07-05T04:08:15.736476Z","signed_message":"canonical_sha256_bytes"},"source_id":"2107.04544","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c2f21410c4154763e45b68a937f1f217b4dec8d6e7f56d7bdef8fd5152d2d6d3","sha256:776625bce941e65913c93cc3138f597f400c9bbe0fbcd1ff67253dcffda9d105"],"state_sha256":"2a22b0dae778eec3da8b15e87ce11cfd5f3044fa84678740dd771a12565c97d8"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"//N+Buq/C9DMW3k0BBLC40Sn3EM+zyKZy0ENXUJ2WxT29YdDmtdjqEZRL10Rht6RHDoXiUZkJkdg0ctHQ+Z9Ag==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-09T13:44:56.893569Z","bundle_sha256":"5c1cc04736985a31ed630e68621acef9c80f12784336bfaa52b1555969dfeeb4"}}