{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:IQZJQY4ZLGYSVWA3IC5KBTIGTC","short_pith_number":"pith:IQZJQY4Z","canonical_record":{"source":{"id":"0905.0395","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/publicdomain/","primary_cat":"nucl-ex","submitted_at":"2009-05-04T16:13:14Z","cross_cats_sorted":[],"title_canon_sha256":"10a0d5cfa82dbc00cb9ed1775aba41b2bc6e46bea562f302929506505574451c","abstract_canon_sha256":"258e0277c78a06200d42e0c9a9ec9cf1ef4e162591bbf342806e0d16b8c61367"},"schema_version":"1.0"},"canonical_sha256":"443298639959b12ad81b40baa0cd0698b2f3b39700d0c5fd06d138767bbf19f4","source":{"kind":"arxiv","id":"0905.0395","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0905.0395","created_at":"2026-05-18T03:27:33Z"},{"alias_kind":"arxiv_version","alias_value":"0905.0395v2","created_at":"2026-05-18T03:27:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0905.0395","created_at":"2026-05-18T03:27:33Z"},{"alias_kind":"pith_short_12","alias_value":"IQZJQY4ZLGYS","created_at":"2026-05-18T12:26:00Z"},{"alias_kind":"pith_short_16","alias_value":"IQZJQY4ZLGYSVWA3","created_at":"2026-05-18T12:26:00Z"},{"alias_kind":"pith_short_8","alias_value":"IQZJQY4Z","created_at":"2026-05-18T12:26:00Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:IQZJQY4ZLGYSVWA3IC5KBTIGTC","target":"record","payload":{"canonical_record":{"source":{"id":"0905.0395","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/publicdomain/","primary_cat":"nucl-ex","submitted_at":"2009-05-04T16:13:14Z","cross_cats_sorted":[],"title_canon_sha256":"10a0d5cfa82dbc00cb9ed1775aba41b2bc6e46bea562f302929506505574451c","abstract_canon_sha256":"258e0277c78a06200d42e0c9a9ec9cf1ef4e162591bbf342806e0d16b8c61367"},"schema_version":"1.0"},"canonical_sha256":"443298639959b12ad81b40baa0cd0698b2f3b39700d0c5fd06d138767bbf19f4","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:27:33.315957Z","signature_b64":"CqyRTnU9PfwI1msmw4jBBGWNCsdHB0n0eTy+pLR2kSg/M8K/Ce3onV/JV3fnY9B3WXA6jOZ0TGyJ/xNG3fvtCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"443298639959b12ad81b40baa0cd0698b2f3b39700d0c5fd06d138767bbf19f4","last_reissued_at":"2026-05-18T03:27:33.315436Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:27:33.315436Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0905.0395","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:27:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Tq3g8SzN3sCxCiWrqGI8JXmNlHdZhbdlTnJNh3x46nAAd7gKokwUr2kQqZ0rcnvJo//lAljeZmzlJnDZ7dBIBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T03:58:51.888378Z"},"content_sha256":"f0e89217e681037694ca2a73bedbc6789afb96788b4b54d2b156eef39169b333","schema_version":"1.0","event_id":"sha256:f0e89217e681037694ca2a73bedbc6789afb96788b4b54d2b156eef39169b333"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:IQZJQY4ZLGYSVWA3IC5KBTIGTC","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A liquid helium target system for a measurement of parity violation in neutron spin rotation","license":"http://creativecommons.org/licenses/publicdomain/","headline":"","cross_cats":[],"primary_cat":"nucl-ex","authors_text":"A. M. Micherdzinska, B. R. Heckel, C. D. Bass, C. R. Huffer, D. Luo, D. M. Markoff, H. E. Swanson, S. C. Walbridge, T. D. Bass, W. M. Snow","submitted_at":"2009-05-04T16:13:14Z","abstract_excerpt":"A liquid helium target system was designed and built to perform a precision measurement of the parity-violating neutron spin rotation in helium due to the nucleon-nucleon weak interaction. The measurement employed a beam of low energy neutrons that passed through a crossed neutron polarizer--analyzer pair with the liquid helium target system located between them. Changes between the target states generated differences in the beam transmission through the polarizer--analyzer pair. The amount of parity-violating spin rotation was determined from the measured beam transmission asymmetries. The ex"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0905.0395","kind":"arxiv","version":2},"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":"2026-05-18T03:27:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gHdqkpowiYdYht7rGa2C2x9vEH3Ns7p8VcEFixawcNC5TLce68Eab3IaEkYPN+EmDW2eiVCsPgMbCXvacwOmBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T03:58:51.888736Z"},"content_sha256":"db2a01d11b637ca027627d86b4c75b179b11d7cf235f264a0d065efe40937d69","schema_version":"1.0","event_id":"sha256:db2a01d11b637ca027627d86b4c75b179b11d7cf235f264a0d065efe40937d69"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/IQZJQY4ZLGYSVWA3IC5KBTIGTC/bundle.json","state_url":"https://pith.science/pith/IQZJQY4ZLGYSVWA3IC5KBTIGTC/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/IQZJQY4ZLGYSVWA3IC5KBTIGTC/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":"2026-06-02T03:58:51Z","links":{"resolver":"https://pith.science/pith/IQZJQY4ZLGYSVWA3IC5KBTIGTC","bundle":"https://pith.science/pith/IQZJQY4ZLGYSVWA3IC5KBTIGTC/bundle.json","state":"https://pith.science/pith/IQZJQY4ZLGYSVWA3IC5KBTIGTC/state.json","well_known_bundle":"https://pith.science/.well-known/pith/IQZJQY4ZLGYSVWA3IC5KBTIGTC/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:IQZJQY4ZLGYSVWA3IC5KBTIGTC","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":"258e0277c78a06200d42e0c9a9ec9cf1ef4e162591bbf342806e0d16b8c61367","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/publicdomain/","primary_cat":"nucl-ex","submitted_at":"2009-05-04T16:13:14Z","title_canon_sha256":"10a0d5cfa82dbc00cb9ed1775aba41b2bc6e46bea562f302929506505574451c"},"schema_version":"1.0","source":{"id":"0905.0395","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0905.0395","created_at":"2026-05-18T03:27:33Z"},{"alias_kind":"arxiv_version","alias_value":"0905.0395v2","created_at":"2026-05-18T03:27:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0905.0395","created_at":"2026-05-18T03:27:33Z"},{"alias_kind":"pith_short_12","alias_value":"IQZJQY4ZLGYS","created_at":"2026-05-18T12:26:00Z"},{"alias_kind":"pith_short_16","alias_value":"IQZJQY4ZLGYSVWA3","created_at":"2026-05-18T12:26:00Z"},{"alias_kind":"pith_short_8","alias_value":"IQZJQY4Z","created_at":"2026-05-18T12:26:00Z"}],"graph_snapshots":[{"event_id":"sha256:db2a01d11b637ca027627d86b4c75b179b11d7cf235f264a0d065efe40937d69","target":"graph","created_at":"2026-05-18T03:27:33Z","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":"A liquid helium target system was designed and built to perform a precision measurement of the parity-violating neutron spin rotation in helium due to the nucleon-nucleon weak interaction. The measurement employed a beam of low energy neutrons that passed through a crossed neutron polarizer--analyzer pair with the liquid helium target system located between them. Changes between the target states generated differences in the beam transmission through the polarizer--analyzer pair. The amount of parity-violating spin rotation was determined from the measured beam transmission asymmetries. The ex","authors_text":"A. M. Micherdzinska, B. R. Heckel, C. D. Bass, C. R. Huffer, D. Luo, D. M. Markoff, H. E. Swanson, S. C. Walbridge, T. D. Bass, W. M. Snow","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/publicdomain/","primary_cat":"nucl-ex","submitted_at":"2009-05-04T16:13:14Z","title":"A liquid helium target system for a measurement of parity violation in neutron spin rotation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0905.0395","kind":"arxiv","version":2},"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:f0e89217e681037694ca2a73bedbc6789afb96788b4b54d2b156eef39169b333","target":"record","created_at":"2026-05-18T03:27:33Z","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":"258e0277c78a06200d42e0c9a9ec9cf1ef4e162591bbf342806e0d16b8c61367","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/publicdomain/","primary_cat":"nucl-ex","submitted_at":"2009-05-04T16:13:14Z","title_canon_sha256":"10a0d5cfa82dbc00cb9ed1775aba41b2bc6e46bea562f302929506505574451c"},"schema_version":"1.0","source":{"id":"0905.0395","kind":"arxiv","version":2}},"canonical_sha256":"443298639959b12ad81b40baa0cd0698b2f3b39700d0c5fd06d138767bbf19f4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"443298639959b12ad81b40baa0cd0698b2f3b39700d0c5fd06d138767bbf19f4","first_computed_at":"2026-05-18T03:27:33.315436Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:27:33.315436Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"CqyRTnU9PfwI1msmw4jBBGWNCsdHB0n0eTy+pLR2kSg/M8K/Ce3onV/JV3fnY9B3WXA6jOZ0TGyJ/xNG3fvtCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:27:33.315957Z","signed_message":"canonical_sha256_bytes"},"source_id":"0905.0395","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f0e89217e681037694ca2a73bedbc6789afb96788b4b54d2b156eef39169b333","sha256:db2a01d11b637ca027627d86b4c75b179b11d7cf235f264a0d065efe40937d69"],"state_sha256":"e9e17cc13a029c93f39281748a9c2f3dab56a17b62152a271d5f76f055c540c0"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"oJcR/NJR0Ei+IQRG+GIl5/4TusFw+yhyqtDMb0ep+0uFv4XYBxf1PMVYxpf4OxuzTYrIV+V0V/pPaa1TkNulAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T03:58:51.891093Z","bundle_sha256":"9016e968df53f79b70db6cec390e39321bca06375a2c83e8f699cb28df9fb98f"}}