{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:OKGTPCAEIFCDNNQU6IRFHUKQNJ","short_pith_number":"pith:OKGTPCAE","canonical_record":{"source":{"id":"0908.2420","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2009-08-17T20:27:41Z","cross_cats_sorted":[],"title_canon_sha256":"65b85c2b59525f5532247ff5bdd06a5bc9c1756fc643ff6ccecf1d0f8a412dc1","abstract_canon_sha256":"bf80afd9d34f628f85aff7acdc6132a801463414ec65eabe599fb8d0174377ae"},"schema_version":"1.0"},"canonical_sha256":"728d378804414436b614f22253d1506a456aa2e512c51800b3d2ec2721d4cc75","source":{"kind":"arxiv","id":"0908.2420","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0908.2420","created_at":"2026-05-18T02:12:33Z"},{"alias_kind":"arxiv_version","alias_value":"0908.2420v2","created_at":"2026-05-18T02:12:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0908.2420","created_at":"2026-05-18T02:12:33Z"},{"alias_kind":"pith_short_12","alias_value":"OKGTPCAEIFCD","created_at":"2026-05-18T12:26:01Z"},{"alias_kind":"pith_short_16","alias_value":"OKGTPCAEIFCDNNQU","created_at":"2026-05-18T12:26:01Z"},{"alias_kind":"pith_short_8","alias_value":"OKGTPCAE","created_at":"2026-05-18T12:26:01Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:OKGTPCAEIFCDNNQU6IRFHUKQNJ","target":"record","payload":{"canonical_record":{"source":{"id":"0908.2420","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2009-08-17T20:27:41Z","cross_cats_sorted":[],"title_canon_sha256":"65b85c2b59525f5532247ff5bdd06a5bc9c1756fc643ff6ccecf1d0f8a412dc1","abstract_canon_sha256":"bf80afd9d34f628f85aff7acdc6132a801463414ec65eabe599fb8d0174377ae"},"schema_version":"1.0"},"canonical_sha256":"728d378804414436b614f22253d1506a456aa2e512c51800b3d2ec2721d4cc75","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:12:33.316195Z","signature_b64":"w3GPMg06uQUaD4OhsoF2mRoWsxGavKGisE52PE+o2u1wENy2kfCMrobqWIMz+8i1/VYunx1EnPBnNLdn3AToDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"728d378804414436b614f22253d1506a456aa2e512c51800b3d2ec2721d4cc75","last_reissued_at":"2026-05-18T02:12:33.315199Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:12:33.315199Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0908.2420","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":"2026-05-18T02:12:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"40OiD/DqVzmgDr18V46Ez+YXJY1n12ACS9ufQ++f8sBXL3yl3P5thDgJ6XbGcwTNc/4JzzdK3Z3WUroCCEYsCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-10T01:35:01.920620Z"},"content_sha256":"222c00ed97442ff711fca97cfddfb3956519a4300f2ad604b2ab44785531d62d","schema_version":"1.0","event_id":"sha256:222c00ed97442ff711fca97cfddfb3956519a4300f2ad604b2ab44785531d62d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:OKGTPCAEIFCDNNQU6IRFHUKQNJ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"P-odd and CP-odd Four-Quark Contributions to Neutron EDM","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Fanrong Xu, Haipeng An, Xiangdong Ji","submitted_at":"2009-08-17T20:27:41Z","abstract_excerpt":"In a class of beyond-standard-model theories, CP-odd observables, such as the neutron electric dipole moment, receive significant contributions from flavor-neutral P-odd and CP-odd four-quark operators. However, considerable uncertainties exist in the hadronic matrix elements of these operators strongly affecting the experimental constraints on CP-violating parameters in the theories. Here we study their hadronic matrix elements in combined chiral perturbation theory and nucleon models. We first classify the operators in chiral representations and present the leading-order QCD evolutions. We t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0908.2420","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":"2026-05-18T02:12:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QzrZ9eH3zrP2zNLeuxRGMcsozGtoQqFiVFme4x+lKAVCenJMbJW6rOWQlUh8SfGN+Oa32v1XZkkP142tbJnGDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-10T01:35:01.921426Z"},"content_sha256":"8beb932f140f38e13cd965f7a5858fd754cbd0d624c8706df4028a43bd2a39c3","schema_version":"1.0","event_id":"sha256:8beb932f140f38e13cd965f7a5858fd754cbd0d624c8706df4028a43bd2a39c3"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/OKGTPCAEIFCDNNQU6IRFHUKQNJ/bundle.json","state_url":"https://pith.science/pith/OKGTPCAEIFCDNNQU6IRFHUKQNJ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/OKGTPCAEIFCDNNQU6IRFHUKQNJ/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":"2026-06-10T01:35:01Z","links":{"resolver":"https://pith.science/pith/OKGTPCAEIFCDNNQU6IRFHUKQNJ","bundle":"https://pith.science/pith/OKGTPCAEIFCDNNQU6IRFHUKQNJ/bundle.json","state":"https://pith.science/pith/OKGTPCAEIFCDNNQU6IRFHUKQNJ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/OKGTPCAEIFCDNNQU6IRFHUKQNJ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:OKGTPCAEIFCDNNQU6IRFHUKQNJ","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":"bf80afd9d34f628f85aff7acdc6132a801463414ec65eabe599fb8d0174377ae","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2009-08-17T20:27:41Z","title_canon_sha256":"65b85c2b59525f5532247ff5bdd06a5bc9c1756fc643ff6ccecf1d0f8a412dc1"},"schema_version":"1.0","source":{"id":"0908.2420","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0908.2420","created_at":"2026-05-18T02:12:33Z"},{"alias_kind":"arxiv_version","alias_value":"0908.2420v2","created_at":"2026-05-18T02:12:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0908.2420","created_at":"2026-05-18T02:12:33Z"},{"alias_kind":"pith_short_12","alias_value":"OKGTPCAEIFCD","created_at":"2026-05-18T12:26:01Z"},{"alias_kind":"pith_short_16","alias_value":"OKGTPCAEIFCDNNQU","created_at":"2026-05-18T12:26:01Z"},{"alias_kind":"pith_short_8","alias_value":"OKGTPCAE","created_at":"2026-05-18T12:26:01Z"}],"graph_snapshots":[{"event_id":"sha256:8beb932f140f38e13cd965f7a5858fd754cbd0d624c8706df4028a43bd2a39c3","target":"graph","created_at":"2026-05-18T02:12:33Z","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":"In a class of beyond-standard-model theories, CP-odd observables, such as the neutron electric dipole moment, receive significant contributions from flavor-neutral P-odd and CP-odd four-quark operators. However, considerable uncertainties exist in the hadronic matrix elements of these operators strongly affecting the experimental constraints on CP-violating parameters in the theories. Here we study their hadronic matrix elements in combined chiral perturbation theory and nucleon models. We first classify the operators in chiral representations and present the leading-order QCD evolutions. We t","authors_text":"Fanrong Xu, Haipeng An, Xiangdong Ji","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2009-08-17T20:27:41Z","title":"P-odd and CP-odd Four-Quark Contributions to Neutron EDM"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0908.2420","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":"sha256:222c00ed97442ff711fca97cfddfb3956519a4300f2ad604b2ab44785531d62d","target":"record","created_at":"2026-05-18T02:12:33Z","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":"bf80afd9d34f628f85aff7acdc6132a801463414ec65eabe599fb8d0174377ae","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2009-08-17T20:27:41Z","title_canon_sha256":"65b85c2b59525f5532247ff5bdd06a5bc9c1756fc643ff6ccecf1d0f8a412dc1"},"schema_version":"1.0","source":{"id":"0908.2420","kind":"arxiv","version":2}},"canonical_sha256":"728d378804414436b614f22253d1506a456aa2e512c51800b3d2ec2721d4cc75","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"728d378804414436b614f22253d1506a456aa2e512c51800b3d2ec2721d4cc75","first_computed_at":"2026-05-18T02:12:33.315199Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:12:33.315199Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"w3GPMg06uQUaD4OhsoF2mRoWsxGavKGisE52PE+o2u1wENy2kfCMrobqWIMz+8i1/VYunx1EnPBnNLdn3AToDw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:12:33.316195Z","signed_message":"canonical_sha256_bytes"},"source_id":"0908.2420","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:222c00ed97442ff711fca97cfddfb3956519a4300f2ad604b2ab44785531d62d","sha256:8beb932f140f38e13cd965f7a5858fd754cbd0d624c8706df4028a43bd2a39c3"],"state_sha256":"adf8490ea4a6dd052d77b512f0d000ebd8b5e7765c0e6961f28ab737cb014001"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"torkJEHi7ICiM36YUVOA5XD9TRr9asUZi4dn0Kj9FAZXIMgAn2dfeZ6tc39Eq1r03oNmhXIupnL1WWfU8lHbBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-10T01:35:01.926054Z","bundle_sha256":"b1b87086b0d8d6de4b4ee899d2b64e92f3f51c84c96331aaa511175f6646b149"}}