{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2008:4MB7NXSUA5RSC3PWFDHFMGU76T","short_pith_number":"pith:4MB7NXSU","canonical_record":{"source":{"id":"0812.2653","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2008-12-15T11:20:28Z","cross_cats_sorted":[],"title_canon_sha256":"97d8bcdf9b909f477f6e3f495dbcbbf7d70178492e9f2ff3138564c9eb729edd","abstract_canon_sha256":"a43a95b71c692a3aeec53e886aabd79014cb87b5cccba76f806eb6fb8e67ed38"},"schema_version":"1.0"},"canonical_sha256":"e303f6de540763216df628ce561a9ff4dc4605cc6f8ea66b6566e52b6c8c98c0","source":{"kind":"arxiv","id":"0812.2653","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0812.2653","created_at":"2026-07-04T17:27:33Z"},{"alias_kind":"arxiv_version","alias_value":"0812.2653v2","created_at":"2026-07-04T17:27:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0812.2653","created_at":"2026-07-04T17:27:33Z"},{"alias_kind":"pith_short_12","alias_value":"4MB7NXSUA5RS","created_at":"2026-07-04T17:27:33Z"},{"alias_kind":"pith_short_16","alias_value":"4MB7NXSUA5RSC3PW","created_at":"2026-07-04T17:27:33Z"},{"alias_kind":"pith_short_8","alias_value":"4MB7NXSU","created_at":"2026-07-04T17:27:33Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2008:4MB7NXSUA5RSC3PWFDHFMGU76T","target":"record","payload":{"canonical_record":{"source":{"id":"0812.2653","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2008-12-15T11:20:28Z","cross_cats_sorted":[],"title_canon_sha256":"97d8bcdf9b909f477f6e3f495dbcbbf7d70178492e9f2ff3138564c9eb729edd","abstract_canon_sha256":"a43a95b71c692a3aeec53e886aabd79014cb87b5cccba76f806eb6fb8e67ed38"},"schema_version":"1.0"},"canonical_sha256":"e303f6de540763216df628ce561a9ff4dc4605cc6f8ea66b6566e52b6c8c98c0","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T17:27:33.914814Z","signature_b64":"o4gyiFDcJkSDtvLzsEq0hzvhErKQiEkoMAd0uV15fs/dDw+rwD0ZRZoFAALDC8AfOSBNZLVp5SXi1F5/SF9jBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e303f6de540763216df628ce561a9ff4dc4605cc6f8ea66b6566e52b6c8c98c0","last_reissued_at":"2026-07-04T17:27:33.914395Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T17:27:33.914395Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0812.2653","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":"2026-07-04T17:27:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EbF49Te4NbO3qsTGNmKO+Iu/DFeRd/MuNNDvvfT/sfF4CbBpnvoZQnE7vN4EWhsb7M/HAPy59dzm8mq3bZdoDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-20T00:54:00.775165Z"},"content_sha256":"9d2add3e466ae55d57e8775a18a0d1d8338f298ca239c91d3e2f2a47765a8a47","schema_version":"1.0","event_id":"sha256:9d2add3e466ae55d57e8775a18a0d1d8338f298ca239c91d3e2f2a47765a8a47"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2008:4MB7NXSUA5RSC3PWFDHFMGU76T","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"PCAC and coherent pion production by low energy neutrinos","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Ch. Berger, L. M. Sehgal","submitted_at":"2008-12-15T11:20:28Z","abstract_excerpt":"Coherent pi^+ and pi^0 production in low energy neutrino reactions is discussed in the framework of the partially conserved axial vector current theory (PCAC). The role of lepton mass effects in suppressing the pi^+ production is emphasized. Instead of using models of pion nucleus scattering, the available data on pion Carbon scattering are implemented for an analysis of the PCAC prediction. Our results agree well with the published upper limits for pi^+ production but are much below the recent MiniBooNE result for pi^0 production."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0812.2653","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/0812.2653/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-04T17:27:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mNjkejAas3wbJ84LW6yUitBQFffiOKruVkt9lDceH4DarHhifQ6yrqgAUAVz2lRx6WgA5AVbL3/t8lTt6IbiCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-20T00:54:00.775540Z"},"content_sha256":"c0d99dc9906bcc40489974d315e6938fe96009874de4c34e427e4d6d19aba0f0","schema_version":"1.0","event_id":"sha256:c0d99dc9906bcc40489974d315e6938fe96009874de4c34e427e4d6d19aba0f0"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/4MB7NXSUA5RSC3PWFDHFMGU76T/bundle.json","state_url":"https://pith.science/pith/4MB7NXSUA5RSC3PWFDHFMGU76T/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/4MB7NXSUA5RSC3PWFDHFMGU76T/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":"2026-07-20T00:54:00Z","links":{"resolver":"https://pith.science/pith/4MB7NXSUA5RSC3PWFDHFMGU76T","bundle":"https://pith.science/pith/4MB7NXSUA5RSC3PWFDHFMGU76T/bundle.json","state":"https://pith.science/pith/4MB7NXSUA5RSC3PWFDHFMGU76T/state.json","well_known_bundle":"https://pith.science/.well-known/pith/4MB7NXSUA5RSC3PWFDHFMGU76T/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2008:4MB7NXSUA5RSC3PWFDHFMGU76T","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":"a43a95b71c692a3aeec53e886aabd79014cb87b5cccba76f806eb6fb8e67ed38","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2008-12-15T11:20:28Z","title_canon_sha256":"97d8bcdf9b909f477f6e3f495dbcbbf7d70178492e9f2ff3138564c9eb729edd"},"schema_version":"1.0","source":{"id":"0812.2653","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0812.2653","created_at":"2026-07-04T17:27:33Z"},{"alias_kind":"arxiv_version","alias_value":"0812.2653v2","created_at":"2026-07-04T17:27:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0812.2653","created_at":"2026-07-04T17:27:33Z"},{"alias_kind":"pith_short_12","alias_value":"4MB7NXSUA5RS","created_at":"2026-07-04T17:27:33Z"},{"alias_kind":"pith_short_16","alias_value":"4MB7NXSUA5RSC3PW","created_at":"2026-07-04T17:27:33Z"},{"alias_kind":"pith_short_8","alias_value":"4MB7NXSU","created_at":"2026-07-04T17:27:33Z"}],"graph_snapshots":[{"event_id":"sha256:c0d99dc9906bcc40489974d315e6938fe96009874de4c34e427e4d6d19aba0f0","target":"graph","created_at":"2026-07-04T17:27:33Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/0812.2653/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Coherent pi^+ and pi^0 production in low energy neutrino reactions is discussed in the framework of the partially conserved axial vector current theory (PCAC). The role of lepton mass effects in suppressing the pi^+ production is emphasized. Instead of using models of pion nucleus scattering, the available data on pion Carbon scattering are implemented for an analysis of the PCAC prediction. Our results agree well with the published upper limits for pi^+ production but are much below the recent MiniBooNE result for pi^0 production.","authors_text":"Ch. Berger, L. M. Sehgal","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2008-12-15T11:20:28Z","title":"PCAC and coherent pion production by low energy neutrinos"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0812.2653","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":"sha256:9d2add3e466ae55d57e8775a18a0d1d8338f298ca239c91d3e2f2a47765a8a47","target":"record","created_at":"2026-07-04T17:27:33Z","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":"a43a95b71c692a3aeec53e886aabd79014cb87b5cccba76f806eb6fb8e67ed38","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2008-12-15T11:20:28Z","title_canon_sha256":"97d8bcdf9b909f477f6e3f495dbcbbf7d70178492e9f2ff3138564c9eb729edd"},"schema_version":"1.0","source":{"id":"0812.2653","kind":"arxiv","version":2}},"canonical_sha256":"e303f6de540763216df628ce561a9ff4dc4605cc6f8ea66b6566e52b6c8c98c0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e303f6de540763216df628ce561a9ff4dc4605cc6f8ea66b6566e52b6c8c98c0","first_computed_at":"2026-07-04T17:27:33.914395Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T17:27:33.914395Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"o4gyiFDcJkSDtvLzsEq0hzvhErKQiEkoMAd0uV15fs/dDw+rwD0ZRZoFAALDC8AfOSBNZLVp5SXi1F5/SF9jBw==","signature_status":"signed_v1","signed_at":"2026-07-04T17:27:33.914814Z","signed_message":"canonical_sha256_bytes"},"source_id":"0812.2653","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9d2add3e466ae55d57e8775a18a0d1d8338f298ca239c91d3e2f2a47765a8a47","sha256:c0d99dc9906bcc40489974d315e6938fe96009874de4c34e427e4d6d19aba0f0"],"state_sha256":"73a5e621f76d54f4542655607333894621f824b44077b7963a81bafb826800a8"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"b8OxZrlg0Bi1/CQDYqMribhrWj4RKi2D2zZsZAk70xqqFp5JMAFUcxf8EcxJuNPBu3Shv3iMoqFN7a/sna+AAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-20T00:54:00.778003Z","bundle_sha256":"f1fa978fc07db07e6f8ea238098564047467d11ec10191f152249a0d2afbba96"}}