{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2020:BY2P5IY66ISJ3TNPNQOHHSWXEB","short_pith_number":"pith:BY2P5IY6","schema_version":"1.0","canonical_sha256":"0e34fea31ef2249dcdaf6c1c73cad72065d9b50dc519a12087452f32f8037710","source":{"kind":"arxiv","id":"2011.08153","version":3},"attestation_state":"computed","paper":{"title":"Blast from the past: Constraints on the dark sector from the BEBC WA66 beam dump experiment","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Giacomo Marocco, Subir Sarkar","submitted_at":"2020-11-16T18:24:54Z","abstract_excerpt":"We derive limits on millicharged dark states, as well as particles with electric or magnetic dipole moments, from the number of observed forward electron scattering events at the Big European Bubble Chamber in the 1982 CERN-WA-066 beam dump experiment. The dark states are produced by the 400 GeV proton beam primarily through the decays of mesons produced in the beam dump, and the lack of excess events places bounds extending up to GeV masses. These improve on bounds from all other experiments, in particular CHARM II."},"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":"2011.08153","kind":"arxiv","version":3},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ph","submitted_at":"2020-11-16T18:24:54Z","cross_cats_sorted":[],"title_canon_sha256":"b6d493674a851d61d97cb09dc337d9f2c912f6db8a1cd5199a89963d12498cf5","abstract_canon_sha256":"9fc16adc1194f928062c9b5a73ed429312a149d7b5cb69151185320824042736"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:16:28.054661Z","signature_b64":"szgNFRPhgHiXM8lmDtbAaTSiTqZzBJhSqXBWSwTXLwWxplTFHwxmylPAXBePPz7AswxfNrzDh9fO8M50zqcWCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0e34fea31ef2249dcdaf6c1c73cad72065d9b50dc519a12087452f32f8037710","last_reissued_at":"2026-07-05T02:16:28.054249Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:16:28.054249Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Blast from the past: Constraints on the dark sector from the BEBC WA66 beam dump experiment","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Giacomo Marocco, Subir Sarkar","submitted_at":"2020-11-16T18:24:54Z","abstract_excerpt":"We derive limits on millicharged dark states, as well as particles with electric or magnetic dipole moments, from the number of observed forward electron scattering events at the Big European Bubble Chamber in the 1982 CERN-WA-066 beam dump experiment. The dark states are produced by the 400 GeV proton beam primarily through the decays of mesons produced in the beam dump, and the lack of excess events places bounds extending up to GeV masses. These improve on bounds from all other experiments, in particular CHARM II."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2011.08153","kind":"arxiv","version":3},"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/2011.08153/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":"2011.08153","created_at":"2026-07-05T02:16:28.054301+00:00"},{"alias_kind":"arxiv_version","alias_value":"2011.08153v3","created_at":"2026-07-05T02:16:28.054301+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2011.08153","created_at":"2026-07-05T02:16:28.054301+00:00"},{"alias_kind":"pith_short_12","alias_value":"BY2P5IY66ISJ","created_at":"2026-07-05T02:16:28.054301+00:00"},{"alias_kind":"pith_short_16","alias_value":"BY2P5IY66ISJ3TNP","created_at":"2026-07-05T02:16:28.054301+00:00"},{"alias_kind":"pith_short_8","alias_value":"BY2P5IY6","created_at":"2026-07-05T02:16:28.054301+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":5,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"2607.07406","citing_title":"Dark Neutrons as Dark Matter: Collisions in Halos and Direct Detection from Dark CP Violation","ref_index":44,"is_internal_anchor":true},{"citing_arxiv_id":"2606.09998","citing_title":"Constraints and Projections for Millicharged Dark Matter in the Sun with Water Cherenkov Neutrino Detectors","ref_index":20,"is_internal_anchor":false},{"citing_arxiv_id":"2510.26260","citing_title":"Letter of Intent: The Forward Physics Facility","ref_index":166,"is_internal_anchor":false},{"citing_arxiv_id":"2511.02023","citing_title":"Underground Production of Electromagnetic Dark States by MeV-scale Electron Beams and Detection with CCDs","ref_index":10,"is_internal_anchor":false},{"citing_arxiv_id":"2604.14282","citing_title":"Probing Neutrino Compositeness with Invisible and Displaced Signals","ref_index":56,"is_internal_anchor":false}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/BY2P5IY66ISJ3TNPNQOHHSWXEB","json":"https://pith.science/pith/BY2P5IY66ISJ3TNPNQOHHSWXEB.json","graph_json":"https://pith.science/api/pith-number/BY2P5IY66ISJ3TNPNQOHHSWXEB/graph.json","events_json":"https://pith.science/api/pith-number/BY2P5IY66ISJ3TNPNQOHHSWXEB/events.json","paper":"https://pith.science/paper/BY2P5IY6"},"agent_actions":{"view_html":"https://pith.science/pith/BY2P5IY66ISJ3TNPNQOHHSWXEB","download_json":"https://pith.science/pith/BY2P5IY66ISJ3TNPNQOHHSWXEB.json","view_paper":"https://pith.science/paper/BY2P5IY6","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2011.08153&json=true","fetch_graph":"https://pith.science/api/pith-number/BY2P5IY66ISJ3TNPNQOHHSWXEB/graph.json","fetch_events":"https://pith.science/api/pith-number/BY2P5IY66ISJ3TNPNQOHHSWXEB/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/BY2P5IY66ISJ3TNPNQOHHSWXEB/action/timestamp_anchor","attest_storage":"https://pith.science/pith/BY2P5IY66ISJ3TNPNQOHHSWXEB/action/storage_attestation","attest_author":"https://pith.science/pith/BY2P5IY66ISJ3TNPNQOHHSWXEB/action/author_attestation","sign_citation":"https://pith.science/pith/BY2P5IY66ISJ3TNPNQOHHSWXEB/action/citation_signature","submit_replication":"https://pith.science/pith/BY2P5IY66ISJ3TNPNQOHHSWXEB/action/replication_record"}},"created_at":"2026-07-05T02:16:28.054301+00:00","updated_at":"2026-07-05T02:16:28.054301+00:00"}