{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2005:JMOITIKSPMRAIAHGUNJ6IG7RYP","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":"710c209c08fa0e2edd4b847b4ff1f7dd9e86b2a62542cfec54f5f73587f468c0","cross_cats_sorted":["hep-ph"],"license":"","primary_cat":"nucl-ex","submitted_at":"2005-02-21T16:52:21Z","title_canon_sha256":"7a08948a209d6b3d46c1b180425f65fa9cbc912427d0e4aea4949087c2ed4329"},"schema_version":"1.0","source":{"id":"nucl-ex/0502017","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"nucl-ex/0502017","created_at":"2026-05-18T04:14:18Z"},{"alias_kind":"arxiv_version","alias_value":"nucl-ex/0502017v2","created_at":"2026-05-18T04:14:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.nucl-ex/0502017","created_at":"2026-05-18T04:14:18Z"},{"alias_kind":"pith_short_12","alias_value":"JMOITIKSPMRA","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_16","alias_value":"JMOITIKSPMRAIAHG","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_8","alias_value":"JMOITIKS","created_at":"2026-05-18T12:25:53Z"}],"graph_snapshots":[{"event_id":"sha256:f596f3bdb8a26af0c88a5c3aeba527cd682593a10f13c144c68a6731ca33e419","target":"graph","created_at":"2026-05-18T04:14:18Z","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":"The forward inclusive pion double charge exchange reaction, ^{16}O(pi^-,pi^+)X, at T_0 = 0.50 and 0.75 GeV has been studied in the kinematical region where an additional pion production is forbidden by energy-momentum conservation. The experiment was performed with the SKS spectrometer at KEK PS. The measured ratio of double charge exchange cross-section for these energies dsigma(0.50 GeV)/dOmega / dsigma(0.75 GeV)/dOmega = 1.7 +/- 0.2, disagrees with the value of 7.2 predicted within the conventional sequential single charge exchange mechanism. Possible reasons for the disagreement are discus","authors_text":"A. P. Krutenkova, D. Abe, H. Noumi, H. Outa, H. Tamura, M. Nakamura, O. Hashimoto, P.K. Saha, T. Nagae, T. Takahashi, T. Watanabe, V. V. Kulikov, Y. Fujii","cross_cats":["hep-ph"],"headline":"","license":"","primary_cat":"nucl-ex","submitted_at":"2005-02-21T16:52:21Z","title":"Inclusive pion double charge exchange on O-16 above the delta resonance"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"nucl-ex/0502017","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":"sha256:915944c08b27e95c39a2a167103cd3c3d824d77c393d157185e32d68a1d63ce1","target":"record","created_at":"2026-05-18T04:14:18Z","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":"710c209c08fa0e2edd4b847b4ff1f7dd9e86b2a62542cfec54f5f73587f468c0","cross_cats_sorted":["hep-ph"],"license":"","primary_cat":"nucl-ex","submitted_at":"2005-02-21T16:52:21Z","title_canon_sha256":"7a08948a209d6b3d46c1b180425f65fa9cbc912427d0e4aea4949087c2ed4329"},"schema_version":"1.0","source":{"id":"nucl-ex/0502017","kind":"arxiv","version":2}},"canonical_sha256":"4b1c89a1527b220400e6a353e41bf1c3f6befb5068592ae2d1fb52332af7e397","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4b1c89a1527b220400e6a353e41bf1c3f6befb5068592ae2d1fb52332af7e397","first_computed_at":"2026-05-18T04:14:18.480433Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:14:18.480433Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"mqa9vmtpzjSoH8abAoQ1mIZrTcWDlJK7vypELBM2xFHF0cj2zhvJ2Fh3GPZOu/lmExa+Jb076mlZ6u9epKZ1AQ==","signature_status":"signed_v1","signed_at":"2026-05-18T04:14:18.480909Z","signed_message":"canonical_sha256_bytes"},"source_id":"nucl-ex/0502017","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:915944c08b27e95c39a2a167103cd3c3d824d77c393d157185e32d68a1d63ce1","sha256:f596f3bdb8a26af0c88a5c3aeba527cd682593a10f13c144c68a6731ca33e419"],"state_sha256":"fb13d7502e7c2b6f2e702b4bda8ecf73fbc1a882f8d216ebed0fbac66341ea96"}