{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:1996:NX3BQPJ47LCMXLRAOFYOLNT2J4","short_pith_number":"pith:NX3BQPJ4","canonical_record":{"source":{"id":"nucl-th/9612017","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"nucl-th","submitted_at":"1996-12-09T04:58:58Z","cross_cats_sorted":[],"title_canon_sha256":"348c2db7f23f53d61c3c881958ac1a34582561f4a35e6b438a29cfbce07fddcf","abstract_canon_sha256":"c198b61fa8b9b150044466ad959de1f16e426eb8c37ad87ea181266003cd38f3"},"schema_version":"1.0"},"canonical_sha256":"6df6183d3cfac4cbae207170e5b67a4f0ee60748b96ebade7176367908a964ef","source":{"kind":"arxiv","id":"nucl-th/9612017","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"nucl-th/9612017","created_at":"2026-05-18T01:05:18Z"},{"alias_kind":"arxiv_version","alias_value":"nucl-th/9612017v1","created_at":"2026-05-18T01:05:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.nucl-th/9612017","created_at":"2026-05-18T01:05:18Z"},{"alias_kind":"pith_short_12","alias_value":"NX3BQPJ47LCM","created_at":"2026-05-18T12:25:48Z"},{"alias_kind":"pith_short_16","alias_value":"NX3BQPJ47LCMXLRA","created_at":"2026-05-18T12:25:48Z"},{"alias_kind":"pith_short_8","alias_value":"NX3BQPJ4","created_at":"2026-05-18T12:25:48Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:1996:NX3BQPJ47LCMXLRAOFYOLNT2J4","target":"record","payload":{"canonical_record":{"source":{"id":"nucl-th/9612017","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"nucl-th","submitted_at":"1996-12-09T04:58:58Z","cross_cats_sorted":[],"title_canon_sha256":"348c2db7f23f53d61c3c881958ac1a34582561f4a35e6b438a29cfbce07fddcf","abstract_canon_sha256":"c198b61fa8b9b150044466ad959de1f16e426eb8c37ad87ea181266003cd38f3"},"schema_version":"1.0"},"canonical_sha256":"6df6183d3cfac4cbae207170e5b67a4f0ee60748b96ebade7176367908a964ef","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:05:18.395407Z","signature_b64":"wp49qeR8JloHVvp/g2PP9b34JKBULdI9e6VM9G4qQp6dzzOFw3pvsSIF520vriH2oPpgHG2RRb4/rbtRdqbmCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6df6183d3cfac4cbae207170e5b67a4f0ee60748b96ebade7176367908a964ef","last_reissued_at":"2026-05-18T01:05:18.395017Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:05:18.395017Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"nucl-th/9612017","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":"2026-05-18T01:05:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2WVCS3e5XPZI47zzBWKFlW2JHNtWdi1tUuCTuA2VUsTofnMxCno1vOZmdt8EONlxu47VPg3SzTiT3SUI6zSfCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T22:00:26.891800Z"},"content_sha256":"18a3ebec59aaff0fe3992b3d4b162883a22ba2cb9f353131e1883f5a6edb1639","schema_version":"1.0","event_id":"sha256:18a3ebec59aaff0fe3992b3d4b162883a22ba2cb9f353131e1883f5a6edb1639"},{"event_type":"graph_snapshot","subject_pith_number":"pith:1996:NX3BQPJ47LCMXLRAOFYOLNT2J4","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A chiral bag model approach to delta electroproduction","license":"","headline":"","cross_cats":[],"primary_cat":"nucl-th","authors_text":"A. G. Williams, A. W. Thomas, D. H. Lu","submitted_at":"1996-12-09T04:58:58Z","abstract_excerpt":"Helicity amplitudes for the $\\gamma^* N \\to \\Delta$ transition are calculated using the cloudy bag model. A correction for center-of-mass motion is carried out using a modified Peierls-Thouless projection method. This reduces the magnitude of the transition amplitudes at small momentum transfer and enhances them at modest momentum transfers. Our calculation shows that the pion cloud contributes substantially to the transition helicity amplitudes, with the final result giving reasonable agreement with the corresponding experimental values."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"nucl-th/9612017","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":"2026-05-18T01:05:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IY3dohbaVZEtI2stwZe0rrcnyNYrZ9/V2crfgvJ4p387dMyGfsNAkVJGDxgZRyli8IY4ae97uCl9PwtzjBssBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T22:00:26.892472Z"},"content_sha256":"4bb3a3d03f5fc4ba0139da2c1ca7188297c3efa6e25c933db52bf7d23d8a3f78","schema_version":"1.0","event_id":"sha256:4bb3a3d03f5fc4ba0139da2c1ca7188297c3efa6e25c933db52bf7d23d8a3f78"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NX3BQPJ47LCMXLRAOFYOLNT2J4/bundle.json","state_url":"https://pith.science/pith/NX3BQPJ47LCMXLRAOFYOLNT2J4/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NX3BQPJ47LCMXLRAOFYOLNT2J4/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":"2026-05-26T22:00:26Z","links":{"resolver":"https://pith.science/pith/NX3BQPJ47LCMXLRAOFYOLNT2J4","bundle":"https://pith.science/pith/NX3BQPJ47LCMXLRAOFYOLNT2J4/bundle.json","state":"https://pith.science/pith/NX3BQPJ47LCMXLRAOFYOLNT2J4/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NX3BQPJ47LCMXLRAOFYOLNT2J4/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1996:NX3BQPJ47LCMXLRAOFYOLNT2J4","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":"c198b61fa8b9b150044466ad959de1f16e426eb8c37ad87ea181266003cd38f3","cross_cats_sorted":[],"license":"","primary_cat":"nucl-th","submitted_at":"1996-12-09T04:58:58Z","title_canon_sha256":"348c2db7f23f53d61c3c881958ac1a34582561f4a35e6b438a29cfbce07fddcf"},"schema_version":"1.0","source":{"id":"nucl-th/9612017","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"nucl-th/9612017","created_at":"2026-05-18T01:05:18Z"},{"alias_kind":"arxiv_version","alias_value":"nucl-th/9612017v1","created_at":"2026-05-18T01:05:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.nucl-th/9612017","created_at":"2026-05-18T01:05:18Z"},{"alias_kind":"pith_short_12","alias_value":"NX3BQPJ47LCM","created_at":"2026-05-18T12:25:48Z"},{"alias_kind":"pith_short_16","alias_value":"NX3BQPJ47LCMXLRA","created_at":"2026-05-18T12:25:48Z"},{"alias_kind":"pith_short_8","alias_value":"NX3BQPJ4","created_at":"2026-05-18T12:25:48Z"}],"graph_snapshots":[{"event_id":"sha256:4bb3a3d03f5fc4ba0139da2c1ca7188297c3efa6e25c933db52bf7d23d8a3f78","target":"graph","created_at":"2026-05-18T01:05:18Z","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":"Helicity amplitudes for the $\\gamma^* N \\to \\Delta$ transition are calculated using the cloudy bag model. A correction for center-of-mass motion is carried out using a modified Peierls-Thouless projection method. This reduces the magnitude of the transition amplitudes at small momentum transfer and enhances them at modest momentum transfers. Our calculation shows that the pion cloud contributes substantially to the transition helicity amplitudes, with the final result giving reasonable agreement with the corresponding experimental values.","authors_text":"A. G. Williams, A. W. Thomas, D. H. Lu","cross_cats":[],"headline":"","license":"","primary_cat":"nucl-th","submitted_at":"1996-12-09T04:58:58Z","title":"A chiral bag model approach to delta electroproduction"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"nucl-th/9612017","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":"sha256:18a3ebec59aaff0fe3992b3d4b162883a22ba2cb9f353131e1883f5a6edb1639","target":"record","created_at":"2026-05-18T01:05:18Z","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":"c198b61fa8b9b150044466ad959de1f16e426eb8c37ad87ea181266003cd38f3","cross_cats_sorted":[],"license":"","primary_cat":"nucl-th","submitted_at":"1996-12-09T04:58:58Z","title_canon_sha256":"348c2db7f23f53d61c3c881958ac1a34582561f4a35e6b438a29cfbce07fddcf"},"schema_version":"1.0","source":{"id":"nucl-th/9612017","kind":"arxiv","version":1}},"canonical_sha256":"6df6183d3cfac4cbae207170e5b67a4f0ee60748b96ebade7176367908a964ef","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6df6183d3cfac4cbae207170e5b67a4f0ee60748b96ebade7176367908a964ef","first_computed_at":"2026-05-18T01:05:18.395017Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:05:18.395017Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"wp49qeR8JloHVvp/g2PP9b34JKBULdI9e6VM9G4qQp6dzzOFw3pvsSIF520vriH2oPpgHG2RRb4/rbtRdqbmCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:05:18.395407Z","signed_message":"canonical_sha256_bytes"},"source_id":"nucl-th/9612017","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:18a3ebec59aaff0fe3992b3d4b162883a22ba2cb9f353131e1883f5a6edb1639","sha256:4bb3a3d03f5fc4ba0139da2c1ca7188297c3efa6e25c933db52bf7d23d8a3f78"],"state_sha256":"68f059e1f798b7d0afda94108534c541449a0c9515ef7149307eeb11ca5eef09"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9kJuP+ArGq0dtbdnZ/fDMLS6XPBXWC0PBk35jk0k7RKCXEKdWB5asu46bC/V08spBhclNxMPQMk9GI08PCA+AA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T22:00:26.896128Z","bundle_sha256":"3ed81c97cbb74646442987afdbef2df047fb770dca680d4c5213ac73bc753063"}}