{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2019:GUUB3NL2BZEKQ42K4Y5UMP6RX7","short_pith_number":"pith:GUUB3NL2","schema_version":"1.0","canonical_sha256":"35281db57a0e48a8734ae63b463fd1bfe91a15fd24d14d31aed80c7bb2298bf8","source":{"kind":"arxiv","id":"1906.09144","version":1},"attestation_state":"computed","paper":{"title":"Quantum radiation reaction in aligned crystals beyond the local constant field approximation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex","hep-ph"],"primary_cat":"physics.plasm-ph","authors_text":"A. Di Piazza, A. H. S{\\o}rensen, C. F. Nielsen, T. N. Wistisen, U. I. Uggerh{\\o}j","submitted_at":"2019-06-21T13:57:39Z","abstract_excerpt":"We report on experimental spectra of photons radiated by 50 GeV positrons crossing silicon single crystals of thicknesses 1.1 mm, 2.0 mm, 4.2 mm, and 6.2 mm at sufficiently small angles to the (110) planes that their motion effectively is governed by the continuum crystal potential. The experiment covers a new regime of interaction where each positron emits several hard photons, whose recoil are not negligible and which are formed on lengths where the variation of the crystal field cannot be ignored. As a result neither the single-photon semiclassical theory of Baier et al. nor the conventiona"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1906.09144","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2019-06-21T13:57:39Z","cross_cats_sorted":["hep-ex","hep-ph"],"title_canon_sha256":"7c53377e55e057c9862928ae9c882aa0339a16f95f3346a469ce88805ce3ea6c","abstract_canon_sha256":"8d147c6253d7a116db21b2b054636ab96a58fa56eb38972fee42a308c302bb5b"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:12:01.307187Z","signature_b64":"qFU03EXQLH0dSBKcv4SLWjcrgY3oPdu1t1ddksl11+hUfJWRz8Jm1JquOKQD6p7LLS+ZbnWKOcQIF02ptKbxDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"35281db57a0e48a8734ae63b463fd1bfe91a15fd24d14d31aed80c7bb2298bf8","last_reissued_at":"2026-07-05T00:12:01.306712Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:12:01.306712Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Quantum radiation reaction in aligned crystals beyond the local constant field approximation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex","hep-ph"],"primary_cat":"physics.plasm-ph","authors_text":"A. Di Piazza, A. H. S{\\o}rensen, C. F. Nielsen, T. N. Wistisen, U. I. Uggerh{\\o}j","submitted_at":"2019-06-21T13:57:39Z","abstract_excerpt":"We report on experimental spectra of photons radiated by 50 GeV positrons crossing silicon single crystals of thicknesses 1.1 mm, 2.0 mm, 4.2 mm, and 6.2 mm at sufficiently small angles to the (110) planes that their motion effectively is governed by the continuum crystal potential. The experiment covers a new regime of interaction where each positron emits several hard photons, whose recoil are not negligible and which are formed on lengths where the variation of the crystal field cannot be ignored. As a result neither the single-photon semiclassical theory of Baier et al. nor the conventiona"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1906.09144","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1906.09144/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"aliases":[{"alias_kind":"arxiv","alias_value":"1906.09144","created_at":"2026-07-05T00:12:01.306771+00:00"},{"alias_kind":"arxiv_version","alias_value":"1906.09144v1","created_at":"2026-07-05T00:12:01.306771+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1906.09144","created_at":"2026-07-05T00:12:01.306771+00:00"},{"alias_kind":"pith_short_12","alias_value":"GUUB3NL2BZEK","created_at":"2026-07-05T00:12:01.306771+00:00"},{"alias_kind":"pith_short_16","alias_value":"GUUB3NL2BZEKQ42K","created_at":"2026-07-05T00:12:01.306771+00:00"},{"alias_kind":"pith_short_8","alias_value":"GUUB3NL2","created_at":"2026-07-05T00:12:01.306771+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/GUUB3NL2BZEKQ42K4Y5UMP6RX7","json":"https://pith.science/pith/GUUB3NL2BZEKQ42K4Y5UMP6RX7.json","graph_json":"https://pith.science/api/pith-number/GUUB3NL2BZEKQ42K4Y5UMP6RX7/graph.json","events_json":"https://pith.science/api/pith-number/GUUB3NL2BZEKQ42K4Y5UMP6RX7/events.json","paper":"https://pith.science/paper/GUUB3NL2"},"agent_actions":{"view_html":"https://pith.science/pith/GUUB3NL2BZEKQ42K4Y5UMP6RX7","download_json":"https://pith.science/pith/GUUB3NL2BZEKQ42K4Y5UMP6RX7.json","view_paper":"https://pith.science/paper/GUUB3NL2","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1906.09144&json=true","fetch_graph":"https://pith.science/api/pith-number/GUUB3NL2BZEKQ42K4Y5UMP6RX7/graph.json","fetch_events":"https://pith.science/api/pith-number/GUUB3NL2BZEKQ42K4Y5UMP6RX7/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/GUUB3NL2BZEKQ42K4Y5UMP6RX7/action/timestamp_anchor","attest_storage":"https://pith.science/pith/GUUB3NL2BZEKQ42K4Y5UMP6RX7/action/storage_attestation","attest_author":"https://pith.science/pith/GUUB3NL2BZEKQ42K4Y5UMP6RX7/action/author_attestation","sign_citation":"https://pith.science/pith/GUUB3NL2BZEKQ42K4Y5UMP6RX7/action/citation_signature","submit_replication":"https://pith.science/pith/GUUB3NL2BZEKQ42K4Y5UMP6RX7/action/replication_record"}},"created_at":"2026-07-05T00:12:01.306771+00:00","updated_at":"2026-07-05T00:12:01.306771+00:00"}