{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2006:2UG2LOK5KPNE3T2JXZR7GZDO6C","short_pith_number":"pith:2UG2LOK5","schema_version":"1.0","canonical_sha256":"d50da5b95d53da4dcf49be63f3646ef0a1bab40f00d5f2c2930544b047f1fec3","source":{"kind":"arxiv","id":"hep-ex/0609015","version":2},"attestation_state":"computed","paper":{"title":"Improved measurements of branching fractions for B -> K pi and B -> pi pi decays","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ex","authors_text":"et al. (for the Belle Collaboration), P. Chang, S.-W. Lin","submitted_at":"2006-09-08T06:08:06Z","abstract_excerpt":"We report improved measurements of branching fractions for B -> K pi and B -> pi pi decays based on a data sample of 449 million B Bbar pairs collected at the Upsilon(4S) resonance with the Belle detector at the KEKB e^+e^- collider. We also calculate the ratios of partial widths for the decays B -> K pi and pi pi, namely R_c = 1.08 +- 0.06 +- 0.08 and R_n = 1.08 +-0.08 +0.09-0.08, where the first and second errors are statistical and systematical, respectively. These ratios are sensitive to enhanced electroweak penguin contributions from new physics; the new measurements are, however, consist"},"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":"hep-ex/0609015","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"hep-ex","submitted_at":"2006-09-08T06:08:06Z","cross_cats_sorted":[],"title_canon_sha256":"a0c6ccfa20ea715f5195589a9ef04fd4dd060531e721feb942ae6d555ca5453c","abstract_canon_sha256":"e4920c33be99d50aee2517cde7036b49ab619ca718b77b4c06c925cf179b6286"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T23:54:23.486607Z","signature_b64":"RpTahrJ1EBnO1tI8hn8bx89/5H+RQSmIB3n2zQq432uprsp8jtCo0WXBfepcrIctLlvbUnnYfH6dIRKmZ3WfCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d50da5b95d53da4dcf49be63f3646ef0a1bab40f00d5f2c2930544b047f1fec3","last_reissued_at":"2026-07-04T23:54:23.486202Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T23:54:23.486202Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Improved measurements of branching fractions for B -> K pi and B -> pi pi decays","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ex","authors_text":"et al. (for the Belle Collaboration), P. Chang, S.-W. Lin","submitted_at":"2006-09-08T06:08:06Z","abstract_excerpt":"We report improved measurements of branching fractions for B -> K pi and B -> pi pi decays based on a data sample of 449 million B Bbar pairs collected at the Upsilon(4S) resonance with the Belle detector at the KEKB e^+e^- collider. We also calculate the ratios of partial widths for the decays B -> K pi and pi pi, namely R_c = 1.08 +- 0.06 +- 0.08 and R_n = 1.08 +-0.08 +0.09-0.08, where the first and second errors are statistical and systematical, respectively. These ratios are sensitive to enhanced electroweak penguin contributions from new physics; the new measurements are, however, consist"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ex/0609015","kind":"arxiv","version":2},"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/hep-ex/0609015/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":"hep-ex/0609015","created_at":"2026-07-04T23:54:23.486258+00:00"},{"alias_kind":"arxiv_version","alias_value":"hep-ex/0609015v2","created_at":"2026-07-04T23:54:23.486258+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-ex/0609015","created_at":"2026-07-04T23:54:23.486258+00:00"},{"alias_kind":"pith_short_12","alias_value":"2UG2LOK5KPNE","created_at":"2026-07-04T23:54:23.486258+00:00"},{"alias_kind":"pith_short_16","alias_value":"2UG2LOK5KPNE3T2J","created_at":"2026-07-04T23:54:23.486258+00:00"},{"alias_kind":"pith_short_8","alias_value":"2UG2LOK5","created_at":"2026-07-04T23:54:23.486258+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/2UG2LOK5KPNE3T2JXZR7GZDO6C","json":"https://pith.science/pith/2UG2LOK5KPNE3T2JXZR7GZDO6C.json","graph_json":"https://pith.science/api/pith-number/2UG2LOK5KPNE3T2JXZR7GZDO6C/graph.json","events_json":"https://pith.science/api/pith-number/2UG2LOK5KPNE3T2JXZR7GZDO6C/events.json","paper":"https://pith.science/paper/2UG2LOK5"},"agent_actions":{"view_html":"https://pith.science/pith/2UG2LOK5KPNE3T2JXZR7GZDO6C","download_json":"https://pith.science/pith/2UG2LOK5KPNE3T2JXZR7GZDO6C.json","view_paper":"https://pith.science/paper/2UG2LOK5","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=hep-ex/0609015&json=true","fetch_graph":"https://pith.science/api/pith-number/2UG2LOK5KPNE3T2JXZR7GZDO6C/graph.json","fetch_events":"https://pith.science/api/pith-number/2UG2LOK5KPNE3T2JXZR7GZDO6C/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/2UG2LOK5KPNE3T2JXZR7GZDO6C/action/timestamp_anchor","attest_storage":"https://pith.science/pith/2UG2LOK5KPNE3T2JXZR7GZDO6C/action/storage_attestation","attest_author":"https://pith.science/pith/2UG2LOK5KPNE3T2JXZR7GZDO6C/action/author_attestation","sign_citation":"https://pith.science/pith/2UG2LOK5KPNE3T2JXZR7GZDO6C/action/citation_signature","submit_replication":"https://pith.science/pith/2UG2LOK5KPNE3T2JXZR7GZDO6C/action/replication_record"}},"created_at":"2026-07-04T23:54:23.486258+00:00","updated_at":"2026-07-04T23:54:23.486258+00:00"}