{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2002:EWVIWHAOXKMO52TT5FCYY3BC2W","short_pith_number":"pith:EWVIWHAO","canonical_record":{"source":{"id":"nucl-th/0206003","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"nucl-th","submitted_at":"2002-06-03T08:14:32Z","cross_cats_sorted":[],"title_canon_sha256":"72f2d654f59ae3ba29f8da18477aa602b6959a4558b37482e10afb313d21216b","abstract_canon_sha256":"8c1174afa1bab76131c907da7593b897da662f99c9db993f59f9b19fcb30b8b2"},"schema_version":"1.0"},"canonical_sha256":"25aa8b1c0eba98eeea73e9458c6c22d593ea7277b9affdc90932ff5343ed82fc","source":{"kind":"arxiv","id":"nucl-th/0206003","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"nucl-th/0206003","created_at":"2026-05-18T00:37:07Z"},{"alias_kind":"arxiv_version","alias_value":"nucl-th/0206003v1","created_at":"2026-05-18T00:37:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.nucl-th/0206003","created_at":"2026-05-18T00:37:07Z"},{"alias_kind":"pith_short_12","alias_value":"EWVIWHAOXKMO","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_16","alias_value":"EWVIWHAOXKMO52TT","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_8","alias_value":"EWVIWHAO","created_at":"2026-05-18T12:25:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2002:EWVIWHAOXKMO52TT5FCYY3BC2W","target":"record","payload":{"canonical_record":{"source":{"id":"nucl-th/0206003","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"nucl-th","submitted_at":"2002-06-03T08:14:32Z","cross_cats_sorted":[],"title_canon_sha256":"72f2d654f59ae3ba29f8da18477aa602b6959a4558b37482e10afb313d21216b","abstract_canon_sha256":"8c1174afa1bab76131c907da7593b897da662f99c9db993f59f9b19fcb30b8b2"},"schema_version":"1.0"},"canonical_sha256":"25aa8b1c0eba98eeea73e9458c6c22d593ea7277b9affdc90932ff5343ed82fc","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:37:07.425991Z","signature_b64":"84Vnb4v+mYN95AFaH6eqDtqSv/zd+4bE/DaY/E/u95HxrMMJavlCTtUxgDtUlIezroYWu4JHC7ZYyLhjybTWCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"25aa8b1c0eba98eeea73e9458c6c22d593ea7277b9affdc90932ff5343ed82fc","last_reissued_at":"2026-05-18T00:37:07.425446Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:37:07.425446Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"nucl-th/0206003","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":"2026-05-18T00:37:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nGGEw6+LxMKV5/XdBvy51crqvy7Du2xPjtc81PO3kx+C+e2E+WzelH0nl9yG7AJmPUEE1LNOR+a/l/hTDMJrCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T19:19:34.515050Z"},"content_sha256":"764e6a7c634131106038732f1f380668ea3f722597946377995488426705c26d","schema_version":"1.0","event_id":"sha256:764e6a7c634131106038732f1f380668ea3f722597946377995488426705c26d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2002:EWVIWHAOXKMO52TT5FCYY3BC2W","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Quasifree processes from nuclei: Meson photoproduction and electron scattering","license":"","headline":"","cross_cats":[],"primary_cat":"nucl-th","authors_text":"J. Piekarewicz, L.J. Abu-Raddad","submitted_at":"2002-06-03T08:14:32Z","abstract_excerpt":"We have developed a relativistic formalism for studying quasi-free processes from nuclei. The formalism can be applied with ease to a variety of processes and renders transparent analytical expressions for all observables. We have applied it to kaon photoproduction and to electron scattering. For the case of the kaon, we compute the recoil polarization of the lambda-hyperon and the photon asymmetry. Our results indicate that polarization observables are insensitive to relativistic, nuclear target, and distortion effects. Yet, they are sensitive to the reactive content, making them ideal tools "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"nucl-th/0206003","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":"2026-05-18T00:37:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XIHttiQ6bK+SH0wgJh3MJf0doEhT2kC8xxSchfmPA9deAsTdald3L7K46J0P2qXK/VFFwgSw/lQGZeB16c2pAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T19:19:34.515756Z"},"content_sha256":"271b5b7a54fe72edcaca201f35b8c59ea89e9d0e5e2522d92d0674a76750404e","schema_version":"1.0","event_id":"sha256:271b5b7a54fe72edcaca201f35b8c59ea89e9d0e5e2522d92d0674a76750404e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/EWVIWHAOXKMO52TT5FCYY3BC2W/bundle.json","state_url":"https://pith.science/pith/EWVIWHAOXKMO52TT5FCYY3BC2W/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/EWVIWHAOXKMO52TT5FCYY3BC2W/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":"2026-05-25T19:19:34Z","links":{"resolver":"https://pith.science/pith/EWVIWHAOXKMO52TT5FCYY3BC2W","bundle":"https://pith.science/pith/EWVIWHAOXKMO52TT5FCYY3BC2W/bundle.json","state":"https://pith.science/pith/EWVIWHAOXKMO52TT5FCYY3BC2W/state.json","well_known_bundle":"https://pith.science/.well-known/pith/EWVIWHAOXKMO52TT5FCYY3BC2W/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2002:EWVIWHAOXKMO52TT5FCYY3BC2W","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":"8c1174afa1bab76131c907da7593b897da662f99c9db993f59f9b19fcb30b8b2","cross_cats_sorted":[],"license":"","primary_cat":"nucl-th","submitted_at":"2002-06-03T08:14:32Z","title_canon_sha256":"72f2d654f59ae3ba29f8da18477aa602b6959a4558b37482e10afb313d21216b"},"schema_version":"1.0","source":{"id":"nucl-th/0206003","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"nucl-th/0206003","created_at":"2026-05-18T00:37:07Z"},{"alias_kind":"arxiv_version","alias_value":"nucl-th/0206003v1","created_at":"2026-05-18T00:37:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.nucl-th/0206003","created_at":"2026-05-18T00:37:07Z"},{"alias_kind":"pith_short_12","alias_value":"EWVIWHAOXKMO","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_16","alias_value":"EWVIWHAOXKMO52TT","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_8","alias_value":"EWVIWHAO","created_at":"2026-05-18T12:25:50Z"}],"graph_snapshots":[{"event_id":"sha256:271b5b7a54fe72edcaca201f35b8c59ea89e9d0e5e2522d92d0674a76750404e","target":"graph","created_at":"2026-05-18T00:37:07Z","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 have developed a relativistic formalism for studying quasi-free processes from nuclei. The formalism can be applied with ease to a variety of processes and renders transparent analytical expressions for all observables. We have applied it to kaon photoproduction and to electron scattering. For the case of the kaon, we compute the recoil polarization of the lambda-hyperon and the photon asymmetry. Our results indicate that polarization observables are insensitive to relativistic, nuclear target, and distortion effects. Yet, they are sensitive to the reactive content, making them ideal tools ","authors_text":"J. Piekarewicz, L.J. Abu-Raddad","cross_cats":[],"headline":"","license":"","primary_cat":"nucl-th","submitted_at":"2002-06-03T08:14:32Z","title":"Quasifree processes from nuclei: Meson photoproduction and electron scattering"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"nucl-th/0206003","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":"sha256:764e6a7c634131106038732f1f380668ea3f722597946377995488426705c26d","target":"record","created_at":"2026-05-18T00:37:07Z","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":"8c1174afa1bab76131c907da7593b897da662f99c9db993f59f9b19fcb30b8b2","cross_cats_sorted":[],"license":"","primary_cat":"nucl-th","submitted_at":"2002-06-03T08:14:32Z","title_canon_sha256":"72f2d654f59ae3ba29f8da18477aa602b6959a4558b37482e10afb313d21216b"},"schema_version":"1.0","source":{"id":"nucl-th/0206003","kind":"arxiv","version":1}},"canonical_sha256":"25aa8b1c0eba98eeea73e9458c6c22d593ea7277b9affdc90932ff5343ed82fc","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"25aa8b1c0eba98eeea73e9458c6c22d593ea7277b9affdc90932ff5343ed82fc","first_computed_at":"2026-05-18T00:37:07.425446Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:37:07.425446Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"84Vnb4v+mYN95AFaH6eqDtqSv/zd+4bE/DaY/E/u95HxrMMJavlCTtUxgDtUlIezroYWu4JHC7ZYyLhjybTWCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:37:07.425991Z","signed_message":"canonical_sha256_bytes"},"source_id":"nucl-th/0206003","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:764e6a7c634131106038732f1f380668ea3f722597946377995488426705c26d","sha256:271b5b7a54fe72edcaca201f35b8c59ea89e9d0e5e2522d92d0674a76750404e"],"state_sha256":"52f80d25f6e2e197e4f8d61a52e301c358a6f6347d9a783704542946c54459b6"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nKZLbVPLF0Vg544JGzjS+Em/ReUg6npzjnRbboe2sVQ2puyePM7A9iWYAyQ0cdO0NY5q1Zb/t0DXGXTDynSJDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T19:19:34.521362Z","bundle_sha256":"b497f6fd2d9344c2e63ceec2b48fd653ea6e5787fa1f968add15428822566c6b"}}