{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:VEEYVLOYZJ5URDRTNS7V425HDU","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":"6faef0236be3d1f6bc3213effe8b27aec0df22e615e420f00b8208e1cd843ecf","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2019-02-08T14:49:02Z","title_canon_sha256":"a4abb9b60d97bada003f876072980e49d988adbfdc87792b0cd4a060b9ca5ce2"},"schema_version":"1.0","source":{"id":"1902.03117","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1902.03117","created_at":"2026-05-17T23:43:03Z"},{"alias_kind":"arxiv_version","alias_value":"1902.03117v3","created_at":"2026-05-17T23:43:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1902.03117","created_at":"2026-05-17T23:43:03Z"},{"alias_kind":"pith_short_12","alias_value":"VEEYVLOYZJ5U","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_16","alias_value":"VEEYVLOYZJ5URDRT","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_8","alias_value":"VEEYVLOY","created_at":"2026-05-18T12:33:30Z"}],"graph_snapshots":[{"event_id":"sha256:386de3ebfcf747e11afe890f15633482abc76ce6561f3b53dfb9bbcaf75a90b7","target":"graph","created_at":"2026-05-17T23:43:03Z","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":"Background: Recent theoretical and experimental researches using proton-induced $\\alpha$-knockout reactions provide direct manifestation of $\\alpha$-cluster formation in nuclei. In recent and future experiments, $\\alpha$-knockout data are available for neutron-rich beryllium isotopes. In $^{12}$Be , rich phenomena are induced by the formation of $\\alpha$-clusters surrounded by neutrons, for instance, breaking of the neutron magic number $N=8$.\n  Purpose: Our objective is to provide direct probing of the $\\alpha$-cluster formation in the $^{12}$Be target through associating the structure inform","authors_text":"Kazuki Yoshida, Kazuyuki Ogata, Mengjiao Lyu, Yoshiko Kanada-En'yo","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2019-02-08T14:49:02Z","title":"Direct probing of the cluster structure in ${}^{12}$Be via $\\alpha$-knockout reaction"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1902.03117","kind":"arxiv","version":3},"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":"sha256:72b028cc6254cad57924988de11dbc82cf9ac0da0b576cb68c581b18fb744115","target":"record","created_at":"2026-05-17T23:43:03Z","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":"6faef0236be3d1f6bc3213effe8b27aec0df22e615e420f00b8208e1cd843ecf","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2019-02-08T14:49:02Z","title_canon_sha256":"a4abb9b60d97bada003f876072980e49d988adbfdc87792b0cd4a060b9ca5ce2"},"schema_version":"1.0","source":{"id":"1902.03117","kind":"arxiv","version":3}},"canonical_sha256":"a9098aadd8ca7b488e336cbf5e6ba71d2703f9c48478cf60659d0e188d9a366b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a9098aadd8ca7b488e336cbf5e6ba71d2703f9c48478cf60659d0e188d9a366b","first_computed_at":"2026-05-17T23:43:03.479253Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:43:03.479253Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"HCHrTzt3aOw3WaJ4IHdGjVNdsrJXmJ3AClVPyTLyMsork+x1j7dlen7MnnQXYQtHmSznjy9rZgPKsT7kiEIxBA==","signature_status":"signed_v1","signed_at":"2026-05-17T23:43:03.479779Z","signed_message":"canonical_sha256_bytes"},"source_id":"1902.03117","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:72b028cc6254cad57924988de11dbc82cf9ac0da0b576cb68c581b18fb744115","sha256:386de3ebfcf747e11afe890f15633482abc76ce6561f3b53dfb9bbcaf75a90b7"],"state_sha256":"e36a4307de47d7139d64140399cc0b0324a5c7d328fbbc97d11a57aa7ed4130c"}