{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2007:IEGYBLEF3OQGOJP2VSKZHTMYAS","short_pith_number":"pith:IEGYBLEF","canonical_record":{"source":{"id":"hep-ph/0701125","kind":"arxiv","version":3},"metadata":{"license":"","primary_cat":"hep-ph","submitted_at":"2007-01-16T16:10:13Z","cross_cats_sorted":["nucl-ex","nucl-th"],"title_canon_sha256":"40c7dec07ddf9490a421728c93dfba78b27c33cbde7648fe88755c61d2a8e22f","abstract_canon_sha256":"54a7835250e7858ae28be7b40e67c22fe8012fccd71377959ebc1040eabfe396"},"schema_version":"1.0"},"canonical_sha256":"410d80ac85dba06725faac9593cd9804b64c1c9c13f7aa03c650ac3a9e38111c","source":{"kind":"arxiv","id":"hep-ph/0701125","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-ph/0701125","created_at":"2026-05-18T02:36:13Z"},{"alias_kind":"arxiv_version","alias_value":"hep-ph/0701125v3","created_at":"2026-05-18T02:36:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-ph/0701125","created_at":"2026-05-18T02:36:13Z"},{"alias_kind":"pith_short_12","alias_value":"IEGYBLEF3OQG","created_at":"2026-05-18T12:25:55Z"},{"alias_kind":"pith_short_16","alias_value":"IEGYBLEF3OQGOJP2","created_at":"2026-05-18T12:25:55Z"},{"alias_kind":"pith_short_8","alias_value":"IEGYBLEF","created_at":"2026-05-18T12:25:55Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2007:IEGYBLEF3OQGOJP2VSKZHTMYAS","target":"record","payload":{"canonical_record":{"source":{"id":"hep-ph/0701125","kind":"arxiv","version":3},"metadata":{"license":"","primary_cat":"hep-ph","submitted_at":"2007-01-16T16:10:13Z","cross_cats_sorted":["nucl-ex","nucl-th"],"title_canon_sha256":"40c7dec07ddf9490a421728c93dfba78b27c33cbde7648fe88755c61d2a8e22f","abstract_canon_sha256":"54a7835250e7858ae28be7b40e67c22fe8012fccd71377959ebc1040eabfe396"},"schema_version":"1.0"},"canonical_sha256":"410d80ac85dba06725faac9593cd9804b64c1c9c13f7aa03c650ac3a9e38111c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:36:13.346780Z","signature_b64":"aik884ti9s/0r8RPjxNZSuvmjCneNBZP95Ko8WW+Tj3BPXTquBhwqHtYq6S+qeSJYKZTYErxMyyxt9S0u50KCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"410d80ac85dba06725faac9593cd9804b64c1c9c13f7aa03c650ac3a9e38111c","last_reissued_at":"2026-05-18T02:36:13.346300Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:36:13.346300Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"hep-ph/0701125","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:36:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9X61k4BIIkYmc8LoakV0XjquMZLW2M55EiZ+bz9PNXakG3a4zaCmJ1MzVEC1Ir3X37wHZslKN06htk4AiNlcDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T00:30:31.932501Z"},"content_sha256":"56dd69aafba5db68c1675966bc56557dda649337e7da1e9ff165f34793d45068","schema_version":"1.0","event_id":"sha256:56dd69aafba5db68c1675966bc56557dda649337e7da1e9ff165f34793d45068"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2007:IEGYBLEF3OQGOJP2VSKZHTMYAS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Hard exclusive electroproduction of a pion in the backward region","license":"","headline":"","cross_cats":["nucl-ex","nucl-th"],"primary_cat":"hep-ph","authors_text":"B. Pire, J.P. Lansberg, L. Szymanowski","submitted_at":"2007-01-16T16:10:13Z","abstract_excerpt":"We study the scaling regime of pion electroproduction in the backward region, eN->e'N'pi. We compute the leading-twist amplitude in the kinematical region, where it factorises into a short-distance matrix element and long-distance dominated nucleon Distribution Amplitudes and nucleon to pion Transition Distribution Amplitudes. Using the chiral limit of the latter, we obtain a first estimate of the cross section, which may be experimentally studied at JLab or Hermes."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/0701125","kind":"arxiv","version":3},"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":"2026-05-18T02:36:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qbuUKy1EDx0/1siOpSZimQWsn8qku0sxcQA7AnXRle6efFUQ+J32ZYeTNvGi5h6ox0z0o33KGA5oYZXLPMiVAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T00:30:31.933188Z"},"content_sha256":"ab33d6947f9f563f212b00bbf22850296bb397c221afe5a8b3f2e0dbb307940d","schema_version":"1.0","event_id":"sha256:ab33d6947f9f563f212b00bbf22850296bb397c221afe5a8b3f2e0dbb307940d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/IEGYBLEF3OQGOJP2VSKZHTMYAS/bundle.json","state_url":"https://pith.science/pith/IEGYBLEF3OQGOJP2VSKZHTMYAS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/IEGYBLEF3OQGOJP2VSKZHTMYAS/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":"2026-05-27T00:30:31Z","links":{"resolver":"https://pith.science/pith/IEGYBLEF3OQGOJP2VSKZHTMYAS","bundle":"https://pith.science/pith/IEGYBLEF3OQGOJP2VSKZHTMYAS/bundle.json","state":"https://pith.science/pith/IEGYBLEF3OQGOJP2VSKZHTMYAS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/IEGYBLEF3OQGOJP2VSKZHTMYAS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2007:IEGYBLEF3OQGOJP2VSKZHTMYAS","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":"54a7835250e7858ae28be7b40e67c22fe8012fccd71377959ebc1040eabfe396","cross_cats_sorted":["nucl-ex","nucl-th"],"license":"","primary_cat":"hep-ph","submitted_at":"2007-01-16T16:10:13Z","title_canon_sha256":"40c7dec07ddf9490a421728c93dfba78b27c33cbde7648fe88755c61d2a8e22f"},"schema_version":"1.0","source":{"id":"hep-ph/0701125","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-ph/0701125","created_at":"2026-05-18T02:36:13Z"},{"alias_kind":"arxiv_version","alias_value":"hep-ph/0701125v3","created_at":"2026-05-18T02:36:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-ph/0701125","created_at":"2026-05-18T02:36:13Z"},{"alias_kind":"pith_short_12","alias_value":"IEGYBLEF3OQG","created_at":"2026-05-18T12:25:55Z"},{"alias_kind":"pith_short_16","alias_value":"IEGYBLEF3OQGOJP2","created_at":"2026-05-18T12:25:55Z"},{"alias_kind":"pith_short_8","alias_value":"IEGYBLEF","created_at":"2026-05-18T12:25:55Z"}],"graph_snapshots":[{"event_id":"sha256:ab33d6947f9f563f212b00bbf22850296bb397c221afe5a8b3f2e0dbb307940d","target":"graph","created_at":"2026-05-18T02:36:13Z","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":"We study the scaling regime of pion electroproduction in the backward region, eN->e'N'pi. We compute the leading-twist amplitude in the kinematical region, where it factorises into a short-distance matrix element and long-distance dominated nucleon Distribution Amplitudes and nucleon to pion Transition Distribution Amplitudes. Using the chiral limit of the latter, we obtain a first estimate of the cross section, which may be experimentally studied at JLab or Hermes.","authors_text":"B. Pire, J.P. Lansberg, L. Szymanowski","cross_cats":["nucl-ex","nucl-th"],"headline":"","license":"","primary_cat":"hep-ph","submitted_at":"2007-01-16T16:10:13Z","title":"Hard exclusive electroproduction of a pion in the backward region"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/0701125","kind":"arxiv","version":3},"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":"sha256:56dd69aafba5db68c1675966bc56557dda649337e7da1e9ff165f34793d45068","target":"record","created_at":"2026-05-18T02:36:13Z","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":"54a7835250e7858ae28be7b40e67c22fe8012fccd71377959ebc1040eabfe396","cross_cats_sorted":["nucl-ex","nucl-th"],"license":"","primary_cat":"hep-ph","submitted_at":"2007-01-16T16:10:13Z","title_canon_sha256":"40c7dec07ddf9490a421728c93dfba78b27c33cbde7648fe88755c61d2a8e22f"},"schema_version":"1.0","source":{"id":"hep-ph/0701125","kind":"arxiv","version":3}},"canonical_sha256":"410d80ac85dba06725faac9593cd9804b64c1c9c13f7aa03c650ac3a9e38111c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"410d80ac85dba06725faac9593cd9804b64c1c9c13f7aa03c650ac3a9e38111c","first_computed_at":"2026-05-18T02:36:13.346300Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:36:13.346300Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"aik884ti9s/0r8RPjxNZSuvmjCneNBZP95Ko8WW+Tj3BPXTquBhwqHtYq6S+qeSJYKZTYErxMyyxt9S0u50KCw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:36:13.346780Z","signed_message":"canonical_sha256_bytes"},"source_id":"hep-ph/0701125","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:56dd69aafba5db68c1675966bc56557dda649337e7da1e9ff165f34793d45068","sha256:ab33d6947f9f563f212b00bbf22850296bb397c221afe5a8b3f2e0dbb307940d"],"state_sha256":"27ead7b9330fe6a29dac8628f281450f49bda1aa5ac0a6c12025d64cd404ee54"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+qDIpMt/WSfPx8975sK3p5sJz2G14rI1X6hlGy1oSToHCF4/nX/0nKFLcIQGspD39yH+zjMqLc47gUZ8ym5PBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T00:30:31.936630Z","bundle_sha256":"2ab294e955e8452c31d681d10f8f683ec3612e3bb1e59f3abb7c7e40adaa1a66"}}