{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:3O3DS5DJG3BJXUD5ZPBWNRA3JP","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":"f74b2254d12494b02dde5b28ce2b65a20b73e38a5bbac6ac1cea344ea2ee2f72","cross_cats_sorted":["nucl-ex","nucl-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2019-04-26T08:04:40Z","title_canon_sha256":"a34ed36dbe59607af6ef75fa057d681409e6e31d7ba67e57de8f4d980f7cddd0"},"schema_version":"1.0","source":{"id":"1904.11706","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1904.11706","created_at":"2026-05-17T23:43:32Z"},{"alias_kind":"arxiv_version","alias_value":"1904.11706v2","created_at":"2026-05-17T23:43:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1904.11706","created_at":"2026-05-17T23:43:32Z"},{"alias_kind":"pith_short_12","alias_value":"3O3DS5DJG3BJ","created_at":"2026-05-18T12:33:07Z"},{"alias_kind":"pith_short_16","alias_value":"3O3DS5DJG3BJXUD5","created_at":"2026-05-18T12:33:07Z"},{"alias_kind":"pith_short_8","alias_value":"3O3DS5DJ","created_at":"2026-05-18T12:33:07Z"}],"graph_snapshots":[{"event_id":"sha256:b40236114ee58b8098b47e55d7a9437f1a85ab77fb015513e1b7188dadb774d3","target":"graph","created_at":"2026-05-17T23:43:32Z","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":"Inspired by the observation of the pentaquark states $P_{c}(4312),P_{c}(4440)$ and $P_{c}(4457)$ at LHCb, photoproduction of these three $P_{c}$ states via the interaction $\\gamma p\\rightarrow J/\\psi p$ is investigated in an effective Lagrangian approach. The $t$-channel Pomeron exchange diffractive process is considered as the main background for the $J/\\psi $ photoproduction. The numerical results show that the theoretical cross section, which is calculated by assuming a branching ratio $Br[P_{c}\\rightarrow J/\\psi p]\\simeq 3\\%$, is consistent with the existing experimental data of the $ \\gam","authors_text":"Jun He, Xiao-Yun Wang, Xu-Rong Chen","cross_cats":["nucl-ex","nucl-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2019-04-26T08:04:40Z","title":"Possibility to study pentaquark states $P_{c}(4312), P_{c}(4440)$, and $P_{c}(4457)$ in $\\gamma p\\rightarrow J/\\psi p$ reaction"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1904.11706","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":"sha256:125d9eddc74c7dc4e31b583c0298645161d1eadcc6e4643a082db7de4816f246","target":"record","created_at":"2026-05-17T23:43:32Z","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":"f74b2254d12494b02dde5b28ce2b65a20b73e38a5bbac6ac1cea344ea2ee2f72","cross_cats_sorted":["nucl-ex","nucl-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2019-04-26T08:04:40Z","title_canon_sha256":"a34ed36dbe59607af6ef75fa057d681409e6e31d7ba67e57de8f4d980f7cddd0"},"schema_version":"1.0","source":{"id":"1904.11706","kind":"arxiv","version":2}},"canonical_sha256":"dbb639746936c29bd07dcbc366c41b4bcee3641c413d058776c523deea9c5dd0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"dbb639746936c29bd07dcbc366c41b4bcee3641c413d058776c523deea9c5dd0","first_computed_at":"2026-05-17T23:43:32.666012Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:43:32.666012Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"v3kRSCOuEIBV+yJo1arkPOpgEaFJFUnLABR3iKbWxrrUtO7FeeXhV9FPxlktIPduXYyfa/8L48K5OULK5ICQDw==","signature_status":"signed_v1","signed_at":"2026-05-17T23:43:32.666511Z","signed_message":"canonical_sha256_bytes"},"source_id":"1904.11706","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:125d9eddc74c7dc4e31b583c0298645161d1eadcc6e4643a082db7de4816f246","sha256:b40236114ee58b8098b47e55d7a9437f1a85ab77fb015513e1b7188dadb774d3"],"state_sha256":"f37527cbe9a072cc74d5ed07f26e676cff97e82892ab8efa08837249e55c6f71"}