{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:CQ6RLTYJ2IA24HPL3WY4VI6PKP","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":"673c4ada192d9c38955fe5360f031c4b3b4768e8bf412ab5510d9125cfb2fdf2","cross_cats_sorted":["nucl-th","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2021-05-15T17:53:30Z","title_canon_sha256":"d6e4bd16fce14f644aa1cc7a7ed8f269aff47af54f7723b5c94623999ea468f3"},"schema_version":"1.0","source":{"id":"2105.07271","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2105.07271","created_at":"2026-07-05T03:18:27Z"},{"alias_kind":"arxiv_version","alias_value":"2105.07271v1","created_at":"2026-07-05T03:18:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2105.07271","created_at":"2026-07-05T03:18:27Z"},{"alias_kind":"pith_short_12","alias_value":"CQ6RLTYJ2IA2","created_at":"2026-07-05T03:18:27Z"},{"alias_kind":"pith_short_16","alias_value":"CQ6RLTYJ2IA24HPL","created_at":"2026-07-05T03:18:27Z"},{"alias_kind":"pith_short_8","alias_value":"CQ6RLTYJ","created_at":"2026-07-05T03:18:27Z"}],"graph_snapshots":[{"event_id":"sha256:896d10d70fde45a28b1f9c0bcd25309c840f343eec8de897ef9adc150251f9bb","target":"graph","created_at":"2026-07-05T03:18:27Z","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/2105.07271/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"A future gamma factory at CERN or accelerator-based gamma sources elsewhere can include the possibility of energetic twisted photons, which are photons with a structured wave front that can allow a pre-defined large angular momentum along the beam direction. Twisted photons are potentially a new tool in hadronic physics, and we consider here one possibility, namely the photoproduction of $\\Delta$(1232) baryons using twisted photons. We show that particular polarization amplitudes isolate the smaller partial wave amplitudes and they are measurable without interference from the terms that are ot","authors_text":"Andrei Afanasev, Carl E. Carlson","cross_cats":["nucl-th","quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2021-05-15T17:53:30Z","title":"Delta baryon photoproduction with twisted photons"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2105.07271","kind":"arxiv","version":1},"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":"sha256:49cb2162d0e77faf62d7785cbb45588cea212169809446b8631af450f6943cd9","target":"record","created_at":"2026-07-05T03:18:27Z","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":"673c4ada192d9c38955fe5360f031c4b3b4768e8bf412ab5510d9125cfb2fdf2","cross_cats_sorted":["nucl-th","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2021-05-15T17:53:30Z","title_canon_sha256":"d6e4bd16fce14f644aa1cc7a7ed8f269aff47af54f7723b5c94623999ea468f3"},"schema_version":"1.0","source":{"id":"2105.07271","kind":"arxiv","version":1}},"canonical_sha256":"143d15cf09d201ae1debddb1caa3cf53e2e43662768d5ab16bc8cfac4f8a376c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"143d15cf09d201ae1debddb1caa3cf53e2e43662768d5ab16bc8cfac4f8a376c","first_computed_at":"2026-07-05T03:18:27.632519Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:18:27.632519Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"AWWHML2tygxAmrgPkV6o8HTFZ8+59nRF4TybYCHxl/DjiEZg3SQD2C8X2unmvAoh0Ng9WgmZ9KMQRjM/cC0GAg==","signature_status":"signed_v1","signed_at":"2026-07-05T03:18:27.633003Z","signed_message":"canonical_sha256_bytes"},"source_id":"2105.07271","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:49cb2162d0e77faf62d7785cbb45588cea212169809446b8631af450f6943cd9","sha256:896d10d70fde45a28b1f9c0bcd25309c840f343eec8de897ef9adc150251f9bb"],"state_sha256":"263d6111382359d6151ab2214abd38146fe9000b9df7223e47797237cc43ba15"}