{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2009:N32DOF2OF5ANODWAUYC53CPAJ7","short_pith_number":"pith:N32DOF2O","schema_version":"1.0","canonical_sha256":"6ef437174e2f40d70ec0a605dd89e04fd13b1725f1dd11c4e023353247c46f12","source":{"kind":"arxiv","id":"0908.3858","version":1},"attestation_state":"computed","paper":{"title":"Lepton universality test with K+ --> l+ nu decays","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ex","authors_text":"Evgueni Goudzovski","submitted_at":"2009-08-26T16:25:18Z","abstract_excerpt":"The NA62 experiment at CERN collected a large sample of $K^+\\to e^+\\nu$ decays during a dedicated run in 2007, which allows a precise test of lepton universality by measurement of the helicity suppressed ratio $R_K = \\Gamma(K^+\\to e^+\\nu)/\\Gamma(K^+\\to\\mu^+\\nu)$. The preliminary result of the analysis of a partial data sample of 51089 $K^+\\to e^+\\nu$ candidates is $R_K=(2.500\\pm0.016)\\times10^{-5}$, consistent with the Standard Model expectation."},"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":"0908.3858","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ex","submitted_at":"2009-08-26T16:25:18Z","cross_cats_sorted":[],"title_canon_sha256":"b06ef90aeba810e6e5c93709c8a0e7331378c3a89328c2a2cd4e72005460db92","abstract_canon_sha256":"be1700750195d9990dc131714a0da11c540ba0ff68fe8ee2dff5d852eabed2ae"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:18:13.015739Z","signature_b64":"dVDM9IZkfw6QUCancBu9r4ly1WtCKJakDjmcgf/HCzI4TNWCg7ZvW05SQRVB7LkmiFo035gkaB3T210wJJkfBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6ef437174e2f40d70ec0a605dd89e04fd13b1725f1dd11c4e023353247c46f12","last_reissued_at":"2026-05-18T04:18:13.015302Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:18:13.015302Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Lepton universality test with K+ --> l+ nu decays","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ex","authors_text":"Evgueni Goudzovski","submitted_at":"2009-08-26T16:25:18Z","abstract_excerpt":"The NA62 experiment at CERN collected a large sample of $K^+\\to e^+\\nu$ decays during a dedicated run in 2007, which allows a precise test of lepton universality by measurement of the helicity suppressed ratio $R_K = \\Gamma(K^+\\to e^+\\nu)/\\Gamma(K^+\\to\\mu^+\\nu)$. The preliminary result of the analysis of a partial data sample of 51089 $K^+\\to e^+\\nu$ candidates is $R_K=(2.500\\pm0.016)\\times10^{-5}$, consistent with the Standard Model expectation."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0908.3858","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":"0908.3858","created_at":"2026-05-18T04:18:13.015371+00:00"},{"alias_kind":"arxiv_version","alias_value":"0908.3858v1","created_at":"2026-05-18T04:18:13.015371+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0908.3858","created_at":"2026-05-18T04:18:13.015371+00:00"},{"alias_kind":"pith_short_12","alias_value":"N32DOF2OF5AN","created_at":"2026-05-18T12:26:00.592388+00:00"},{"alias_kind":"pith_short_16","alias_value":"N32DOF2OF5ANODWA","created_at":"2026-05-18T12:26:00.592388+00:00"},{"alias_kind":"pith_short_8","alias_value":"N32DOF2O","created_at":"2026-05-18T12:26:00.592388+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/N32DOF2OF5ANODWAUYC53CPAJ7","json":"https://pith.science/pith/N32DOF2OF5ANODWAUYC53CPAJ7.json","graph_json":"https://pith.science/api/pith-number/N32DOF2OF5ANODWAUYC53CPAJ7/graph.json","events_json":"https://pith.science/api/pith-number/N32DOF2OF5ANODWAUYC53CPAJ7/events.json","paper":"https://pith.science/paper/N32DOF2O"},"agent_actions":{"view_html":"https://pith.science/pith/N32DOF2OF5ANODWAUYC53CPAJ7","download_json":"https://pith.science/pith/N32DOF2OF5ANODWAUYC53CPAJ7.json","view_paper":"https://pith.science/paper/N32DOF2O","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=0908.3858&json=true","fetch_graph":"https://pith.science/api/pith-number/N32DOF2OF5ANODWAUYC53CPAJ7/graph.json","fetch_events":"https://pith.science/api/pith-number/N32DOF2OF5ANODWAUYC53CPAJ7/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/N32DOF2OF5ANODWAUYC53CPAJ7/action/timestamp_anchor","attest_storage":"https://pith.science/pith/N32DOF2OF5ANODWAUYC53CPAJ7/action/storage_attestation","attest_author":"https://pith.science/pith/N32DOF2OF5ANODWAUYC53CPAJ7/action/author_attestation","sign_citation":"https://pith.science/pith/N32DOF2OF5ANODWAUYC53CPAJ7/action/citation_signature","submit_replication":"https://pith.science/pith/N32DOF2OF5ANODWAUYC53CPAJ7/action/replication_record"}},"created_at":"2026-05-18T04:18:13.015371+00:00","updated_at":"2026-05-18T04:18:13.015371+00:00"}