{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:RO2BYKVACWQBG43WLMYDJFQZYG","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":"f0d91e99f5c5b0aa2b846cfdb578a1492a181e7624cc8a8aa24a3718a2a45b65","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2011-09-06T17:27:47Z","title_canon_sha256":"9702f5f66fa0c3de15f9554a2739a15d7435eda062918177e9d4afb0b20ee9f6"},"schema_version":"1.0","source":{"id":"1109.1238","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1109.1238","created_at":"2026-05-18T03:23:21Z"},{"alias_kind":"arxiv_version","alias_value":"1109.1238v2","created_at":"2026-05-18T03:23:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1109.1238","created_at":"2026-05-18T03:23:21Z"},{"alias_kind":"pith_short_12","alias_value":"RO2BYKVACWQB","created_at":"2026-05-18T12:26:41Z"},{"alias_kind":"pith_short_16","alias_value":"RO2BYKVACWQBG43W","created_at":"2026-05-18T12:26:41Z"},{"alias_kind":"pith_short_8","alias_value":"RO2BYKVA","created_at":"2026-05-18T12:26:41Z"}],"graph_snapshots":[{"event_id":"sha256:e227af866e8f25d07e85b69bea89c6208792177fd51aef324ac9e971e6d79b91","target":"graph","created_at":"2026-05-18T03:23:21Z","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 searched for the Phi--(1860) pentaquark in the photoproduction process off the deuteron in the Xi- pi- decay channel using CLAS. The invariant mass spectrum of the Xi- pi- system does not indicate any statistically significant enhancement near the reported mass M = 1.860 GeV. The statistical analysis of the sideband-subtracted mass spectrum yields a 90% confidence level upper limit of 0.7 nb for the photoproduction cross section of Phi--(1860) with a consecutive decay into Xi- pi- in the photon energy range 4.5 GeV < Egamma < 5.5 GeV.","authors_text":"CLAS Collaboration, E.S. Smith, G. Mutchler, H. Egiyan, H. Lu, J. Langheinrich, K. Park, L. Graham, M. Holtrop, P. Mattione, R.W. Gothe, S. Stepanyan, Z.W. Zhao","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2011-09-06T17:27:47Z","title":"Upper limits for the photoproduction cross section for the Phi--(1860) pentaquark state off the deuteron"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1109.1238","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":"sha256:6232d8562c5855dcd2f8e94a8009a07860ad6d8becb788908fcb285649ae0c02","target":"record","created_at":"2026-05-18T03:23:21Z","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":"f0d91e99f5c5b0aa2b846cfdb578a1492a181e7624cc8a8aa24a3718a2a45b65","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2011-09-06T17:27:47Z","title_canon_sha256":"9702f5f66fa0c3de15f9554a2739a15d7435eda062918177e9d4afb0b20ee9f6"},"schema_version":"1.0","source":{"id":"1109.1238","kind":"arxiv","version":2}},"canonical_sha256":"8bb41c2aa015a01373765b30349619c197c2998270654f9a612a172c5af7b6cb","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8bb41c2aa015a01373765b30349619c197c2998270654f9a612a172c5af7b6cb","first_computed_at":"2026-05-18T03:23:21.381764Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:23:21.381764Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"OZIM/Nh8XI20KF3eJ2cT2HBHjb4iScQyBeR3xGX1ZVfZqWfxRE8kbYZlioKlbadnv2UFyLENSsybGyBTCzSaBw==","signature_status":"signed_v1","signed_at":"2026-05-18T03:23:21.382439Z","signed_message":"canonical_sha256_bytes"},"source_id":"1109.1238","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6232d8562c5855dcd2f8e94a8009a07860ad6d8becb788908fcb285649ae0c02","sha256:e227af866e8f25d07e85b69bea89c6208792177fd51aef324ac9e971e6d79b91"],"state_sha256":"7b1b1b4081b2e716080233aa3aec32b12d20894443a9619c77bf98f974ae4b77"}