{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2004:26W44SAGM27MHM7UEISGUCMPWA","short_pith_number":"pith:26W44SAG","canonical_record":{"source":{"id":"nucl-ex/0411022","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"nucl-ex","submitted_at":"2004-11-11T00:39:43Z","cross_cats_sorted":[],"title_canon_sha256":"5a2e4cd73c927ad3ea994bddb182b8b3f227a611fedf89c9d35fbe2735bd533d","abstract_canon_sha256":"7201642251a60b58a5cc32983118469892ded5cc5bc351051641378c59275964"},"schema_version":"1.0"},"canonical_sha256":"d7adce480666bec3b3f422246a098fb03e0d9b9974749b2211f6ee644254bef5","source":{"kind":"arxiv","id":"nucl-ex/0411022","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"nucl-ex/0411022","created_at":"2026-05-18T01:08:49Z"},{"alias_kind":"arxiv_version","alias_value":"nucl-ex/0411022v1","created_at":"2026-05-18T01:08:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.nucl-ex/0411022","created_at":"2026-05-18T01:08:49Z"},{"alias_kind":"pith_short_12","alias_value":"26W44SAGM27M","created_at":"2026-05-18T12:25:52Z"},{"alias_kind":"pith_short_16","alias_value":"26W44SAGM27MHM7U","created_at":"2026-05-18T12:25:52Z"},{"alias_kind":"pith_short_8","alias_value":"26W44SAG","created_at":"2026-05-18T12:25:52Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2004:26W44SAGM27MHM7UEISGUCMPWA","target":"record","payload":{"canonical_record":{"source":{"id":"nucl-ex/0411022","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"nucl-ex","submitted_at":"2004-11-11T00:39:43Z","cross_cats_sorted":[],"title_canon_sha256":"5a2e4cd73c927ad3ea994bddb182b8b3f227a611fedf89c9d35fbe2735bd533d","abstract_canon_sha256":"7201642251a60b58a5cc32983118469892ded5cc5bc351051641378c59275964"},"schema_version":"1.0"},"canonical_sha256":"d7adce480666bec3b3f422246a098fb03e0d9b9974749b2211f6ee644254bef5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:08:49.035134Z","signature_b64":"k5EgSmesrB9tQdKHd0Xmbsn/dZVyopjcY8VQiG5enE+9Nrnn4soHOCH8uTy7bmi/qfB7Fxd/EjKCIlvNNYpCDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d7adce480666bec3b3f422246a098fb03e0d9b9974749b2211f6ee644254bef5","last_reissued_at":"2026-05-18T01:08:49.034478Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:08:49.034478Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"nucl-ex/0411022","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":"2026-05-18T01:08:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"67Hfu4ZZhPWFTqGo2+jmXfq0+qvQJ3WThV5KZ/iAPzHDhwlhRvE+4Zn4H8wB4ambk/i8XH/gBWGykbqaIMYUBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T04:13:31.136697Z"},"content_sha256":"86b09f92efafce680d3861fcad1d72b605dd6b37e08a5bdb856c2dfda691efdf","schema_version":"1.0","event_id":"sha256:86b09f92efafce680d3861fcad1d72b605dd6b37e08a5bdb856c2dfda691efdf"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2004:26W44SAGM27MHM7UEISGUCMPWA","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A Current Mode Detector Array for Gamma-Ray Asymmetry Measurements","license":"","headline":"","cross_cats":[],"primary_cat":"nucl-ex","authors_text":"C. Blessinger, G.S. Mitchell, H. Nann, J.D. Bowman, J. Hartfield, J. Tasson, M. Leuschner, M.T. Gericke, P.-N. Seo, R.C. Gillis, S.A. Page, S.I. Penttil\\\"a, S. Muto, T. Ino, W.D. Ramsay, W.M. Snow, W.S. Wilburn, Y. Masuda","submitted_at":"2004-11-11T00:39:43Z","abstract_excerpt":"We have built a CsI(Tl) gamma-ray detector array for the NPDGamma experiment to search for a small parity-violating directional asymmetry in the angular distribution of 2.2 MeV gamma-rays from the capture of polarized cold neutrons by protons with a sensitivity of several ppb. The weak pion-nucleon coupling constant can be determined from this asymmetry. The small size of the asymmetry requires a high cold neutron flux, control of systematic errors at the ppb level, and the use of current mode gamma-ray detection with vacuum photo diodes and low-noise solid-state preamplifiers. The average det"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"nucl-ex/0411022","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":"2026-05-18T01:08:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3osfhKMRLg6HBa8BkW20M2mTkQOoRLrSSZ4NsH1aiDFo0fBqxtpF2sLLtGfQgiJ120JvocdWfJfR3A0wsKx+CQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T04:13:31.137051Z"},"content_sha256":"cac5266c9b06f87a972b2abf01a159081df0bc22a569d376dded1dab083a20ca","schema_version":"1.0","event_id":"sha256:cac5266c9b06f87a972b2abf01a159081df0bc22a569d376dded1dab083a20ca"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/26W44SAGM27MHM7UEISGUCMPWA/bundle.json","state_url":"https://pith.science/pith/26W44SAGM27MHM7UEISGUCMPWA/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/26W44SAGM27MHM7UEISGUCMPWA/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":"2026-06-01T04:13:31Z","links":{"resolver":"https://pith.science/pith/26W44SAGM27MHM7UEISGUCMPWA","bundle":"https://pith.science/pith/26W44SAGM27MHM7UEISGUCMPWA/bundle.json","state":"https://pith.science/pith/26W44SAGM27MHM7UEISGUCMPWA/state.json","well_known_bundle":"https://pith.science/.well-known/pith/26W44SAGM27MHM7UEISGUCMPWA/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2004:26W44SAGM27MHM7UEISGUCMPWA","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":"7201642251a60b58a5cc32983118469892ded5cc5bc351051641378c59275964","cross_cats_sorted":[],"license":"","primary_cat":"nucl-ex","submitted_at":"2004-11-11T00:39:43Z","title_canon_sha256":"5a2e4cd73c927ad3ea994bddb182b8b3f227a611fedf89c9d35fbe2735bd533d"},"schema_version":"1.0","source":{"id":"nucl-ex/0411022","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"nucl-ex/0411022","created_at":"2026-05-18T01:08:49Z"},{"alias_kind":"arxiv_version","alias_value":"nucl-ex/0411022v1","created_at":"2026-05-18T01:08:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.nucl-ex/0411022","created_at":"2026-05-18T01:08:49Z"},{"alias_kind":"pith_short_12","alias_value":"26W44SAGM27M","created_at":"2026-05-18T12:25:52Z"},{"alias_kind":"pith_short_16","alias_value":"26W44SAGM27MHM7U","created_at":"2026-05-18T12:25:52Z"},{"alias_kind":"pith_short_8","alias_value":"26W44SAG","created_at":"2026-05-18T12:25:52Z"}],"graph_snapshots":[{"event_id":"sha256:cac5266c9b06f87a972b2abf01a159081df0bc22a569d376dded1dab083a20ca","target":"graph","created_at":"2026-05-18T01:08:49Z","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 built a CsI(Tl) gamma-ray detector array for the NPDGamma experiment to search for a small parity-violating directional asymmetry in the angular distribution of 2.2 MeV gamma-rays from the capture of polarized cold neutrons by protons with a sensitivity of several ppb. The weak pion-nucleon coupling constant can be determined from this asymmetry. The small size of the asymmetry requires a high cold neutron flux, control of systematic errors at the ppb level, and the use of current mode gamma-ray detection with vacuum photo diodes and low-noise solid-state preamplifiers. The average det","authors_text":"C. Blessinger, G.S. Mitchell, H. Nann, J.D. Bowman, J. Hartfield, J. Tasson, M. Leuschner, M.T. Gericke, P.-N. Seo, R.C. Gillis, S.A. Page, S.I. Penttil\\\"a, S. Muto, T. Ino, W.D. Ramsay, W.M. Snow, W.S. Wilburn, Y. Masuda","cross_cats":[],"headline":"","license":"","primary_cat":"nucl-ex","submitted_at":"2004-11-11T00:39:43Z","title":"A Current Mode Detector Array for Gamma-Ray Asymmetry Measurements"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"nucl-ex/0411022","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":"sha256:86b09f92efafce680d3861fcad1d72b605dd6b37e08a5bdb856c2dfda691efdf","target":"record","created_at":"2026-05-18T01:08:49Z","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":"7201642251a60b58a5cc32983118469892ded5cc5bc351051641378c59275964","cross_cats_sorted":[],"license":"","primary_cat":"nucl-ex","submitted_at":"2004-11-11T00:39:43Z","title_canon_sha256":"5a2e4cd73c927ad3ea994bddb182b8b3f227a611fedf89c9d35fbe2735bd533d"},"schema_version":"1.0","source":{"id":"nucl-ex/0411022","kind":"arxiv","version":1}},"canonical_sha256":"d7adce480666bec3b3f422246a098fb03e0d9b9974749b2211f6ee644254bef5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d7adce480666bec3b3f422246a098fb03e0d9b9974749b2211f6ee644254bef5","first_computed_at":"2026-05-18T01:08:49.034478Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:08:49.034478Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"k5EgSmesrB9tQdKHd0Xmbsn/dZVyopjcY8VQiG5enE+9Nrnn4soHOCH8uTy7bmi/qfB7Fxd/EjKCIlvNNYpCDA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:08:49.035134Z","signed_message":"canonical_sha256_bytes"},"source_id":"nucl-ex/0411022","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:86b09f92efafce680d3861fcad1d72b605dd6b37e08a5bdb856c2dfda691efdf","sha256:cac5266c9b06f87a972b2abf01a159081df0bc22a569d376dded1dab083a20ca"],"state_sha256":"25fc3049a989664240aa556db56bcd98e3243e829408ddbd609bb731413d65ad"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iQQeuJWTIUe23vg0hKciAJzJZcbKIZI1jooliVBtRGhEwOpgoL3w0KldZ28eDOVdkgb3HYo7oXWrvbGkZbdxCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T04:13:31.139084Z","bundle_sha256":"8fc1f632fc2a80c2f29aa5435d6e99597953f0cc07c7daded8fd1c2b635797fe"}}