{"as_of":"2026-08-06T18:13:00Z","caps":{"database_statements":6,"inbound":100,"outbound":100},"context_digest":"sha256:e2e9746f4a4b7ca611f9915af9fedca8426b0c7ea4715721cd1f0aee8fc8bc34","coverage":[{"denominator":0,"lane":"reference_resolution","note":"Typed states for the displayed outbound observations.","records_observed":0,"source":"paper_references, paper_reference_links","source_observed_at":null,"state":"measured"},{"denominator":1,"lane":"standing_notices","note":"One-hop event checks from named stored sources.","records_observed":1,"source":"scholarly_work_events, retraction_status_cache","source_observed_at":"2026-08-06T06:34:29.942622+00:00","state":"measured"},{"denominator":1,"lane":"inbound_itemization","note":"Pith citing papers itemized under the disclosed page cap.","records_observed":1,"source":"paper_references, paper_reference_links","source_observed_at":"2026-08-01T15:14:59.900883Z","state":"measured"},{"denominator":1,"lane":"external_citation_measurements","note":"A source-named dated measurement, never combined with another source.","records_observed":0,"source":"cited_works","source_observed_at":null,"state":"measured"}],"external_citation_measurements":[],"inbound":[{"citation":{"cited_paper":{"arxiv_id":"2107.06748","last_updated":"2022-02-09T15:15:49Z","snapshot_observed_at":"2026-07-06T11:29:04.092194Z","submitted_at":"2021-07-14T14:47:42Z","title":"Progress and Opportunities in Backward angle (u-channel) Physics","version":5},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"2107.06748","snapshot_observed_at":"2026-08-01T15:14:59.900883Z","title":"Ayerbe and others","venue":null,"work_id":null,"year":2021},"citing_paper":{"arxiv_id":"2607.18535","last_updated":"2026-07-20T22:01:03Z","snapshot_observed_at":"2026-08-05T06:09:37.536607Z","submitted_at":"2026-07-20T22:01:03Z","title":"Ultra-peripheral Collisions","version":1},"reference_index":76,"source":"arxiv_source","source_observed_at":"2026-08-01T15:14:59.900883Z"},"links":{"cited_paper":"/paper/2107.06748","citing_paper":"/paper/2607.18535"},"observation_digest":"sha256:d1e406228228d9816e61f525431c61d7bc76ffc1aa9767795c42429cf795f8c8","observation_id":"cd5389d8-8f35-4bac-bf16-5818ba82c830","resolution":{"observed_at":"2026-08-01T15:14:59.900883Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}}],"links":{"evidence":"/evidence","html":"/paper/2107.06748/citation-record","integrity":"/paper/2107.06748/integrity","json":"/paper/2107.06748/citation-record.json","paper":"/paper/2107.06748"},"outbound":[],"paper":{"arxiv_id":"2107.06748","last_updated":"2022-02-09T15:15:49Z","latest_version":5,"primary_category":"hep-ph","snapshot_observed_at":"2026-07-06T11:29:04.092194Z","submitted_at":"2021-07-14T14:47:42Z","title":"Progress and Opportunities in Backward angle (u-channel) Physics"},"reference_resolution":{"displayed":0,"state_counts":{"malformed_identifier":0,"metadata_mismatch":0,"parse_uncertain":0,"unresolved":0,"verified_exact":0,"verified_fuzzy":0},"total_outbound_references":0},"refusal":"A citation records a reference. It does not transfer a finding from one paper to another.","schema":"pith.paper-citation-record.v1","standing_sources":[{"observed_at":"2026-08-06T06:34:29.942622+00:00","source":"crossref"},{"observed_at":"2026-08-06T06:34:23.284952+00:00","source":"retraction_watch"}],"thesis":"As of 6 August 2026, this Paper Citation Record lists 0 of 0 outbound references and 1 inbound Pith citation observation for arXiv:2107.06748."}