{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:VROROVSLHFADXBR24FETSVBUXY","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":"0ec2179f9c5c32bd1ac500e939292ee6b9482c6a422dafb6ac868e3b47868f14","cross_cats_sorted":[],"license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"hep-ph","submitted_at":"2023-12-04T07:47:58Z","title_canon_sha256":"8f0b5d515f2138d2b893c5654d20d85d6b8911c31c24c5085697f1a1be8a8615"},"schema_version":"1.0","source":{"id":"2312.01703","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2312.01703","created_at":"2026-07-05T07:19:58Z"},{"alias_kind":"arxiv_version","alias_value":"2312.01703v1","created_at":"2026-07-05T07:19:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2312.01703","created_at":"2026-07-05T07:19:58Z"},{"alias_kind":"pith_short_12","alias_value":"VROROVSLHFAD","created_at":"2026-07-05T07:19:58Z"},{"alias_kind":"pith_short_16","alias_value":"VROROVSLHFADXBR2","created_at":"2026-07-05T07:19:58Z"},{"alias_kind":"pith_short_8","alias_value":"VROROVSL","created_at":"2026-07-05T07:19:58Z"}],"graph_snapshots":[{"event_id":"sha256:84ad39e23fac935e81b8b237fd98240c725d2ee897fb3d470c0cb1eb2205f520","target":"graph","created_at":"2026-07-05T07:19:58Z","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/2312.01703/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We consider an experiment to search for dark sector particles in dark photon kinetic mixing model by analyze invisible and semi-invisible decays of neutral mesons $M^0 = \\pi^0$, $\\eta$, $\\eta'$, $\\omega$, $f_2(1270)$, produced in the NA64 experiment at the CERN SPS. The approach proposed in Ref.~\\cite{Gninenko:2014sxa} is to use the charge-exchange reactions $\\pi^- + (A, Z) \\to M^0 + (A,Z-1); M^0 \\to$ invisible or semi-invisible of high-energy pions (or kaons) at a nuclei target as a source of $M^0$s, which subsequently decay invisibly into dark sector. This reaction chain would lead to a stri","authors_text":"Alexey S. Zhevlakov, Dmitry V. Kirpichnikov, Sergei N. Gninenko, Sergey Kuleshov, Valery E. Lyubovitskij","cross_cats":[],"headline":"","license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"hep-ph","submitted_at":"2023-12-04T07:47:58Z","title":"Test of vector portal with dark fermions in the charge-exchange reactions in the NA64 experiment at CERN SPS"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2312.01703","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":"sha256:6206f666635fc1e2362eed579b98e746ee97b04e816dd0b2660865a8574864d4","target":"record","created_at":"2026-07-05T07:19:58Z","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":"0ec2179f9c5c32bd1ac500e939292ee6b9482c6a422dafb6ac868e3b47868f14","cross_cats_sorted":[],"license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"hep-ph","submitted_at":"2023-12-04T07:47:58Z","title_canon_sha256":"8f0b5d515f2138d2b893c5654d20d85d6b8911c31c24c5085697f1a1be8a8615"},"schema_version":"1.0","source":{"id":"2312.01703","kind":"arxiv","version":1}},"canonical_sha256":"ac5d17564b39403b863ae149395434be38b98e032a5f884eddcb6d84ca2ae6b8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ac5d17564b39403b863ae149395434be38b98e032a5f884eddcb6d84ca2ae6b8","first_computed_at":"2026-07-05T07:19:58.438273Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T07:19:58.438273Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"TaVIiCpfNctbMWdf3DtuBREiE33r6h1FgpcM8iBHVPIL3tQqSVtJ8TIyh3nl5JStg4Ko7h3ukKLxGa5Y17JsCw==","signature_status":"signed_v1","signed_at":"2026-07-05T07:19:58.438718Z","signed_message":"canonical_sha256_bytes"},"source_id":"2312.01703","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6206f666635fc1e2362eed579b98e746ee97b04e816dd0b2660865a8574864d4","sha256:84ad39e23fac935e81b8b237fd98240c725d2ee897fb3d470c0cb1eb2205f520"],"state_sha256":"a20614058d5f9d4092e1859a006d11ccf9adbe873ece185cb453668a4ac21821"}