{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:LGI7YLUA4IP2XGX4UVWKADT42R","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":"928fb340025523f9d4865efe302afca40efc92631f466eb4d8f446240e71a62d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2015-08-03T08:08:24Z","title_canon_sha256":"6b940978f93175d7d2f5f9459588c33577f3b183440b5a35f67d2974e1f85e31"},"schema_version":"1.0","source":{"id":"1508.00339","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1508.00339","created_at":"2026-05-18T01:34:15Z"},{"alias_kind":"arxiv_version","alias_value":"1508.00339v2","created_at":"2026-05-18T01:34:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1508.00339","created_at":"2026-05-18T01:34:15Z"},{"alias_kind":"pith_short_12","alias_value":"LGI7YLUA4IP2","created_at":"2026-05-18T12:29:29Z"},{"alias_kind":"pith_short_16","alias_value":"LGI7YLUA4IP2XGX4","created_at":"2026-05-18T12:29:29Z"},{"alias_kind":"pith_short_8","alias_value":"LGI7YLUA","created_at":"2026-05-18T12:29:29Z"}],"graph_snapshots":[{"event_id":"sha256:8849a536997ba793fbb9666323d6ea67ec3570836fee63a642f48d8f5a43e226","target":"graph","created_at":"2026-05-18T01:34:15Z","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":"We propose to study the pentaquark candidates of $P_c^+(4380)$ and $P_c^+(4450)$ in $J/\\psi$ photoproduction and look for further experimental evidence for their nature. Since the photoproduction process does not satisfy the so-called \"anomalous triangle singularity\" condition their presence in $J/\\psi$ photoproduction would conclude that they should be genuine states and provide further evidence for their existence.","authors_text":"Qiang Zhao, Qian Wang, Xiao-Hai Liu","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2015-08-03T08:08:24Z","title":"Photoproduction of hidden charm pentaquark states $P_c^+(4380)$ and $P_c^+(4450)$"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1508.00339","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":"sha256:27630eeadf42fa8c3141cbbf7b7ab7eacad056e4d58e443042915d1a22549505","target":"record","created_at":"2026-05-18T01:34:15Z","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":"928fb340025523f9d4865efe302afca40efc92631f466eb4d8f446240e71a62d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2015-08-03T08:08:24Z","title_canon_sha256":"6b940978f93175d7d2f5f9459588c33577f3b183440b5a35f67d2974e1f85e31"},"schema_version":"1.0","source":{"id":"1508.00339","kind":"arxiv","version":2}},"canonical_sha256":"5991fc2e80e21fab9afca56ca00e7cd45fe16be428410ed75be674fae3270957","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5991fc2e80e21fab9afca56ca00e7cd45fe16be428410ed75be674fae3270957","first_computed_at":"2026-05-18T01:34:15.154201Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:34:15.154201Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"YBPE0UjIljA61Y4PsAnqCyYsZy8IxMPVAy/9Y2QPkIdENFxktLEZoZQvrJWa9mDV3fNhCr2hf0RNlF5ctJR0AQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:34:15.154987Z","signed_message":"canonical_sha256_bytes"},"source_id":"1508.00339","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:27630eeadf42fa8c3141cbbf7b7ab7eacad056e4d58e443042915d1a22549505","sha256:8849a536997ba793fbb9666323d6ea67ec3570836fee63a642f48d8f5a43e226"],"state_sha256":"3d0a84e46a288abacfef0a71c6c9a1a0e1647e748f3f6dd47ee2600083a46598"}