{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2003:E6Q5KRVUP4RE7DBCKS6FHM7J7Y","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":"7e7e9f86934e8ad788ccc28e30c393b3479af0abe396ee059697c1324aea4685","cross_cats_sorted":[],"license":"","primary_cat":"nucl-ex","submitted_at":"2003-05-09T20:16:58Z","title_canon_sha256":"fc531393d8056511d3b7f176761cb206de882644fedfa79186f4850a8329f789"},"schema_version":"1.0","source":{"id":"nucl-ex/0305005","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"nucl-ex/0305005","created_at":"2026-05-18T01:05:21Z"},{"alias_kind":"arxiv_version","alias_value":"nucl-ex/0305005v1","created_at":"2026-05-18T01:05:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.nucl-ex/0305005","created_at":"2026-05-18T01:05:21Z"},{"alias_kind":"pith_short_12","alias_value":"E6Q5KRVUP4RE","created_at":"2026-05-18T12:25:51Z"},{"alias_kind":"pith_short_16","alias_value":"E6Q5KRVUP4RE7DBC","created_at":"2026-05-18T12:25:51Z"},{"alias_kind":"pith_short_8","alias_value":"E6Q5KRVU","created_at":"2026-05-18T12:25:51Z"}],"graph_snapshots":[{"event_id":"sha256:982f26daabff7334ddd4eb59872f73d17226a70dff42be38080414b6fbe6ea1d","target":"graph","created_at":"2026-05-18T01:05:21Z","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 measured the nuclear transparency of the fundamental process $\\gamma$ n $\\to  \\pi^-$ p in $^4$He. These measurements were performed at Jefferson Lab in the photon energy range of 1.6 to 4.5 GeV and at $\\theta^{\\pi}_{cm}= 70^\\circ$ and $90^\\circ$. These measurements are the first of their kind in the study of nuclear transparency in photoreactions. They also provide a benchmark test of Glauber calculations based on traditional models of nuclear physics. The transparency results suggest deviations from the traditional nuclear physics picture. The momentum transfer dependence of the measu","authors_text":"D. Dutta, et al","cross_cats":[],"headline":"","license":"","primary_cat":"nucl-ex","submitted_at":"2003-05-09T20:16:58Z","title":"Nuclear Transparency with the gamma + n -> pi- + p Process in 4He"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"nucl-ex/0305005","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":"sha256:461e6b0bbb93bfbd0e18156b364225be903d1109f4533506f401e1dc06fbcef7","target":"record","created_at":"2026-05-18T01:05:21Z","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":"7e7e9f86934e8ad788ccc28e30c393b3479af0abe396ee059697c1324aea4685","cross_cats_sorted":[],"license":"","primary_cat":"nucl-ex","submitted_at":"2003-05-09T20:16:58Z","title_canon_sha256":"fc531393d8056511d3b7f176761cb206de882644fedfa79186f4850a8329f789"},"schema_version":"1.0","source":{"id":"nucl-ex/0305005","kind":"arxiv","version":1}},"canonical_sha256":"27a1d546b47f224f8c2254bc53b3e9fe265e9db658bfa35909ba72d382de8763","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"27a1d546b47f224f8c2254bc53b3e9fe265e9db658bfa35909ba72d382de8763","first_computed_at":"2026-05-18T01:05:21.557638Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:05:21.557638Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"FrQlkKQUJWHxCVUufOY+Gm6sBnbc9QRG3XQDf2kOt32fYKCBNsyCwXsBDAIk/OHvX+oX4HpePW2ZrZcZKOt+Bg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:05:21.558061Z","signed_message":"canonical_sha256_bytes"},"source_id":"nucl-ex/0305005","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:461e6b0bbb93bfbd0e18156b364225be903d1109f4533506f401e1dc06fbcef7","sha256:982f26daabff7334ddd4eb59872f73d17226a70dff42be38080414b6fbe6ea1d"],"state_sha256":"7f377806653ae112928a5414eff8d0ebe0603a2c83161896f5999fdbe2022af9"}