{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2011:MJMR7IB3IAZKKJ7HJCGVLJPIDR","short_pith_number":"pith:MJMR7IB3","schema_version":"1.0","canonical_sha256":"62591fa03b4032a527e7488d55a5e81c5849cc3fba370c0d721ae996a8e46837","source":{"kind":"arxiv","id":"1111.4075","version":1},"attestation_state":"computed","paper":{"title":"The Large-Angle Photon Veto System for the NA62 Experiment at CERN","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.ins-det","authors_text":"A. Antonelli, B. Angelucci, D. Di Filippo, E. Leonardi, F. Ambrosino, F. Costantini, F. Rafaelli, G. D'Agostini, G. Saracino, I. Mannelli, M. Moulson, M. Napolitano, M. Raggi, M. Serra, P. Massarotti, P. Valente, R. Fantechi, S. Gallorini, S. Giudici, S. Venditti, T. Spadaro, V. Palladino","submitted_at":"2011-11-17T12:34:23Z","abstract_excerpt":"The branching ratio (BR) for the decay K^+ \\rightarrow \\pi^+ \\nu \\bar{\\nu} is a sensitive probe for new physics. The NA62 experiment at the CERN SPS will measure this BR to within about 10%. To reject the dominant background from channels with final state photons, the large-angle vetoes (LAVs) must detect photons of energy as low as 200 MeV with an inefficiency of less than 10^-4, as well as provide energy and time measurements with resolutions of 10% and 1 ns for 1 GeV photons. The LAV detectors make creative reuse of lead glass blocks recycled from the OPAL electromagnetic calorimeter barrel"},"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":"1111.4075","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2011-11-17T12:34:23Z","cross_cats_sorted":[],"title_canon_sha256":"d2ec0d99b8742309be1344c983eaf28358c0bb2d5aa4295358fd910a850b76c5","abstract_canon_sha256":"be0c33906f2f7febedc536b31b87f3ee8b33e0481c329abd0b3cca391ccb1208"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:08:12.023338Z","signature_b64":"QH+Mm/h76Jl+jz4m6X4PNqb8LBT9NdxX7K8DRss1vlaqaJQiTlEY/KaPoBcum/uy1g9fr4Q+mCGMRpsYSpaNBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"62591fa03b4032a527e7488d55a5e81c5849cc3fba370c0d721ae996a8e46837","last_reissued_at":"2026-05-18T04:08:12.022915Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:08:12.022915Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"The Large-Angle Photon Veto System for the NA62 Experiment at CERN","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.ins-det","authors_text":"A. Antonelli, B. Angelucci, D. Di Filippo, E. Leonardi, F. Ambrosino, F. Costantini, F. Rafaelli, G. D'Agostini, G. Saracino, I. Mannelli, M. Moulson, M. Napolitano, M. Raggi, M. Serra, P. Massarotti, P. Valente, R. Fantechi, S. Gallorini, S. Giudici, S. Venditti, T. Spadaro, V. Palladino","submitted_at":"2011-11-17T12:34:23Z","abstract_excerpt":"The branching ratio (BR) for the decay K^+ \\rightarrow \\pi^+ \\nu \\bar{\\nu} is a sensitive probe for new physics. The NA62 experiment at the CERN SPS will measure this BR to within about 10%. To reject the dominant background from channels with final state photons, the large-angle vetoes (LAVs) must detect photons of energy as low as 200 MeV with an inefficiency of less than 10^-4, as well as provide energy and time measurements with resolutions of 10% and 1 ns for 1 GeV photons. The LAV detectors make creative reuse of lead glass blocks recycled from the OPAL electromagnetic calorimeter barrel"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1111.4075","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":""},"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":"1111.4075","created_at":"2026-05-18T04:08:12.022987+00:00"},{"alias_kind":"arxiv_version","alias_value":"1111.4075v1","created_at":"2026-05-18T04:08:12.022987+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1111.4075","created_at":"2026-05-18T04:08:12.022987+00:00"},{"alias_kind":"pith_short_12","alias_value":"MJMR7IB3IAZK","created_at":"2026-05-18T12:26:34.985390+00:00"},{"alias_kind":"pith_short_16","alias_value":"MJMR7IB3IAZKKJ7H","created_at":"2026-05-18T12:26:34.985390+00:00"},{"alias_kind":"pith_short_8","alias_value":"MJMR7IB3","created_at":"2026-05-18T12:26:34.985390+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/MJMR7IB3IAZKKJ7HJCGVLJPIDR","json":"https://pith.science/pith/MJMR7IB3IAZKKJ7HJCGVLJPIDR.json","graph_json":"https://pith.science/api/pith-number/MJMR7IB3IAZKKJ7HJCGVLJPIDR/graph.json","events_json":"https://pith.science/api/pith-number/MJMR7IB3IAZKKJ7HJCGVLJPIDR/events.json","paper":"https://pith.science/paper/MJMR7IB3"},"agent_actions":{"view_html":"https://pith.science/pith/MJMR7IB3IAZKKJ7HJCGVLJPIDR","download_json":"https://pith.science/pith/MJMR7IB3IAZKKJ7HJCGVLJPIDR.json","view_paper":"https://pith.science/paper/MJMR7IB3","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1111.4075&json=true","fetch_graph":"https://pith.science/api/pith-number/MJMR7IB3IAZKKJ7HJCGVLJPIDR/graph.json","fetch_events":"https://pith.science/api/pith-number/MJMR7IB3IAZKKJ7HJCGVLJPIDR/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/MJMR7IB3IAZKKJ7HJCGVLJPIDR/action/timestamp_anchor","attest_storage":"https://pith.science/pith/MJMR7IB3IAZKKJ7HJCGVLJPIDR/action/storage_attestation","attest_author":"https://pith.science/pith/MJMR7IB3IAZKKJ7HJCGVLJPIDR/action/author_attestation","sign_citation":"https://pith.science/pith/MJMR7IB3IAZKKJ7HJCGVLJPIDR/action/citation_signature","submit_replication":"https://pith.science/pith/MJMR7IB3IAZKKJ7HJCGVLJPIDR/action/replication_record"}},"created_at":"2026-05-18T04:08:12.022987+00:00","updated_at":"2026-05-18T04:08:12.022987+00:00"}