{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:XQZDEWC7CHNDZTSAR2JXFJZSKP","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":"0de3c78e3332fecbbdd73c5fb29eb6c6395241be8577ca7ebdef7bb78f65eb6e","cross_cats_sorted":["hep-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2019-07-16T15:02:34Z","title_canon_sha256":"09f6d7d5f371430b125816cc08ada92e8ee349298bca8b56427e549446928dfb"},"schema_version":"1.0","source":{"id":"1907.07046","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1907.07046","created_at":"2026-07-05T00:25:12Z"},{"alias_kind":"arxiv_version","alias_value":"1907.07046v2","created_at":"2026-07-05T00:25:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1907.07046","created_at":"2026-07-05T00:25:12Z"},{"alias_kind":"pith_short_12","alias_value":"XQZDEWC7CHND","created_at":"2026-07-05T00:25:12Z"},{"alias_kind":"pith_short_16","alias_value":"XQZDEWC7CHNDZTSA","created_at":"2026-07-05T00:25:12Z"},{"alias_kind":"pith_short_8","alias_value":"XQZDEWC7","created_at":"2026-07-05T00:25:12Z"}],"graph_snapshots":[{"event_id":"sha256:ffe03c943a9fac7aa07ccdf520d5e9dde6434ab740240e64b9e6f9b28127fde4","target":"graph","created_at":"2026-07-05T00:25:12Z","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/1907.07046/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We propose to search the monophoton events at the BESIII detector and future Super Tau Charm Factory to probe the sub-GeV dark photon decay into lighter dark matter. We compute the cross section due to the dark photon associated a standard model photon production, and study the corresponding standard model irreducible/reducible backgrounds. By using the data about 17 fb$^{-1}$ collected at the BESIII detector since 2011, we derive new leading limits of the mixing strength $\\varepsilon$, $\\varepsilon\\lesssim(1.1-1.6)\\times 10^{-4}$, in the mass range of 0.04 GeV $\\lesssim m_{A^\\prime} \\lesssim$","authors_text":"Gang Li, Mao Song, Wei-Tao Zhang, Xue-An Pan, Yu Zhang, Zhong-Ming Niu","cross_cats":["hep-ex"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2019-07-16T15:02:34Z","title":"Probing invisible decay of dark photon at BESIII and future STCF via monophoton searches"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1907.07046","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":"sha256:1f89b52412a11fead6546f9247c28b02bfc323818ddb43b0a45b24969aeaa057","target":"record","created_at":"2026-07-05T00:25:12Z","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":"0de3c78e3332fecbbdd73c5fb29eb6c6395241be8577ca7ebdef7bb78f65eb6e","cross_cats_sorted":["hep-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2019-07-16T15:02:34Z","title_canon_sha256":"09f6d7d5f371430b125816cc08ada92e8ee349298bca8b56427e549446928dfb"},"schema_version":"1.0","source":{"id":"1907.07046","kind":"arxiv","version":2}},"canonical_sha256":"bc3232585f11da3cce408e9372a73253d27e580101d263eb75d5ab8e8f3db8f4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"bc3232585f11da3cce408e9372a73253d27e580101d263eb75d5ab8e8f3db8f4","first_computed_at":"2026-07-05T00:25:12.356948Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:25:12.356948Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"45MU1U5Yxo5c5NdYMM9GRMuZzI7rtuF71W0sjz480PIkdZa8kYp0oc01QAeFj5hhfHTKjvjICxO9farsovuiAQ==","signature_status":"signed_v1","signed_at":"2026-07-05T00:25:12.357413Z","signed_message":"canonical_sha256_bytes"},"source_id":"1907.07046","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1f89b52412a11fead6546f9247c28b02bfc323818ddb43b0a45b24969aeaa057","sha256:ffe03c943a9fac7aa07ccdf520d5e9dde6434ab740240e64b9e6f9b28127fde4"],"state_sha256":"d9a7af70fe5c4df287f423b7443c62b9e37cefcae0a66e203add64baabdc3fd9"}