{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2001:53KFEFF3ENYFHNPHMRO4PHS4PU","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":"feb850f6aedef0a66457aa64d40bbed30f2f730b532daff5079eb33e1ad2a42c","cross_cats_sorted":["astro-ph","hep-ex","nucl-ex"],"license":"","primary_cat":"hep-ph","submitted_at":"2001-01-26T13:54:37Z","title_canon_sha256":"f582031fbb9e35774de096e575649d84c8ec101a3a73c243fa4a4527e64dd3aa"},"schema_version":"1.0","source":{"id":"hep-ph/0101298","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-ph/0101298","created_at":"2026-07-04T16:27:12Z"},{"alias_kind":"arxiv_version","alias_value":"hep-ph/0101298v2","created_at":"2026-07-04T16:27:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-ph/0101298","created_at":"2026-07-04T16:27:12Z"},{"alias_kind":"pith_short_12","alias_value":"53KFEFF3ENYF","created_at":"2026-07-04T16:27:12Z"},{"alias_kind":"pith_short_16","alias_value":"53KFEFF3ENYFHNPH","created_at":"2026-07-04T16:27:12Z"},{"alias_kind":"pith_short_8","alias_value":"53KFEFF3","created_at":"2026-07-04T16:27:12Z"}],"graph_snapshots":[{"event_id":"sha256:acf597269cc787045bbdb14b41dff35252e28859cf1dc88773bae85b982f1797","target":"graph","created_at":"2026-07-04T16:27:12Z","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/hep-ph/0101298/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Two dedicated experiments on internal pair conversion (IPC) of isoscalar M1 transitions were carried out in order to test a 9 MeV/c2 X-boson scenario. In the 7Li(p,e+e-)8Be reaction at 1.1 MeV proton energy to the predominantly T=0 level at 18.15 MeV, a significant deviation from IPC was observed at large pair correlation angles. In the 11B(d,n e+e-)12C reaction at 1.6 MeV, leading to the 12.71 MeV 1+ level with pure T=0 character, an anomaly was observed at 9 MeV/c2. The compatibility of the results with the scenario is discussed.","authors_text":"F.W.N. de Boer, H. Bokemeyer, J. van Klinken, K.A. Mueller, K. Bethge, K.E. Stiebing, R. van Dantzig, V. Mironov","cross_cats":["astro-ph","hep-ex","nucl-ex"],"headline":"","license":"","primary_cat":"hep-ph","submitted_at":"2001-01-26T13:54:37Z","title":"Further search for a neutral boson with a mass around 9 MeV/c2"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/0101298","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":"sha256:655247a3ed8051fd7b08f4ef76a99556e896a9697c87b86819385329ee735f21","target":"record","created_at":"2026-07-04T16:27:12Z","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":"feb850f6aedef0a66457aa64d40bbed30f2f730b532daff5079eb33e1ad2a42c","cross_cats_sorted":["astro-ph","hep-ex","nucl-ex"],"license":"","primary_cat":"hep-ph","submitted_at":"2001-01-26T13:54:37Z","title_canon_sha256":"f582031fbb9e35774de096e575649d84c8ec101a3a73c243fa4a4527e64dd3aa"},"schema_version":"1.0","source":{"id":"hep-ph/0101298","kind":"arxiv","version":2}},"canonical_sha256":"eed45214bb237053b5e7645dc79e5c7d18dcbd05690848f93c37d0e388d13229","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"eed45214bb237053b5e7645dc79e5c7d18dcbd05690848f93c37d0e388d13229","first_computed_at":"2026-07-04T16:27:12.612773Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:27:12.612773Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Gdzx5JG1wQmFJu2LJPiN+LTd+oabCrdlsV92je6Nr3JbwJjnSuXIq+OtyvRD+nRcXz4glk3MotdevlmoRcwxBg==","signature_status":"signed_v1","signed_at":"2026-07-04T16:27:12.613213Z","signed_message":"canonical_sha256_bytes"},"source_id":"hep-ph/0101298","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:655247a3ed8051fd7b08f4ef76a99556e896a9697c87b86819385329ee735f21","sha256:acf597269cc787045bbdb14b41dff35252e28859cf1dc88773bae85b982f1797"],"state_sha256":"2b40608b2534c43363342e79c18af3f31ae2512a7dfac473d65091024360d400"}