{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:1999:5AD2KZWJSA576VZ7Y5H37KNF4V","short_pith_number":"pith:5AD2KZWJ","schema_version":"1.0","canonical_sha256":"e807a566c9903bff573fc74fbfa9a5e54839109d401c52a97869deeaef6b7f3e","source":{"kind":"arxiv","id":"hep-ph/9909404","version":2},"attestation_state":"computed","paper":{"title":"Extracting V_{ub} Without Recourse to Structure Functions","license":"","headline":"","cross_cats":["hep-ex"],"primary_cat":"hep-ph","authors_text":"Adam K. Leibovich, Ian Low, I. Z. Rothstein","submitted_at":"1999-09-16T17:45:08Z","abstract_excerpt":"We present a closed form expression for |V_{ub}|^2/ |V_{tb} V_{ts}^*|^2 in terms of the endpoint photon and lepton spectra from the inclusive decays B -> X_s\\gamma and B -> X_u\\ell\\nu, respectively, which includes the resummation of the endpoint logs at next to leading order and is completely independent of the B meson structure function. The use of this expression for extracting V_{ub} would eliminate the large systematic errors usually incurred due to the modeling of the heavy quarks' Fermi motion."},"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-ph/9909404","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"hep-ph","submitted_at":"1999-09-16T17:45:08Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"bfbd655511c9cf58fa931db229460833133dd1859a26816ac5612c384943bc31","abstract_canon_sha256":"533b34f6b4a1e4136aad1af11b95503ec1b8600592c816a0f81318d3afa28c80"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:36:27.527300Z","signature_b64":"xhBA+5ysDqLNwz7+vaetJcn1cwIrF7oW8eMbt4e/HQrolnC3s+w5ldEU+y7UoIilAS7co6y+ydWQG5zzzdDFAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e807a566c9903bff573fc74fbfa9a5e54839109d401c52a97869deeaef6b7f3e","last_reissued_at":"2026-05-18T02:36:27.526733Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:36:27.526733Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Extracting V_{ub} Without Recourse to Structure Functions","license":"","headline":"","cross_cats":["hep-ex"],"primary_cat":"hep-ph","authors_text":"Adam K. Leibovich, Ian Low, I. Z. Rothstein","submitted_at":"1999-09-16T17:45:08Z","abstract_excerpt":"We present a closed form expression for |V_{ub}|^2/ |V_{tb} V_{ts}^*|^2 in terms of the endpoint photon and lepton spectra from the inclusive decays B -> X_s\\gamma and B -> X_u\\ell\\nu, respectively, which includes the resummation of the endpoint logs at next to leading order and is completely independent of the B meson structure function. The use of this expression for extracting V_{ub} would eliminate the large systematic errors usually incurred due to the modeling of the heavy quarks' Fermi motion."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/9909404","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":""},"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-ph/9909404","created_at":"2026-05-18T02:36:27.526803+00:00"},{"alias_kind":"arxiv_version","alias_value":"hep-ph/9909404v2","created_at":"2026-05-18T02:36:27.526803+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-ph/9909404","created_at":"2026-05-18T02:36:27.526803+00:00"},{"alias_kind":"pith_short_12","alias_value":"5AD2KZWJSA57","created_at":"2026-05-18T12:25:49.038998+00:00"},{"alias_kind":"pith_short_16","alias_value":"5AD2KZWJSA576VZ7","created_at":"2026-05-18T12:25:49.038998+00:00"},{"alias_kind":"pith_short_8","alias_value":"5AD2KZWJ","created_at":"2026-05-18T12:25:49.038998+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/5AD2KZWJSA576VZ7Y5H37KNF4V","json":"https://pith.science/pith/5AD2KZWJSA576VZ7Y5H37KNF4V.json","graph_json":"https://pith.science/api/pith-number/5AD2KZWJSA576VZ7Y5H37KNF4V/graph.json","events_json":"https://pith.science/api/pith-number/5AD2KZWJSA576VZ7Y5H37KNF4V/events.json","paper":"https://pith.science/paper/5AD2KZWJ"},"agent_actions":{"view_html":"https://pith.science/pith/5AD2KZWJSA576VZ7Y5H37KNF4V","download_json":"https://pith.science/pith/5AD2KZWJSA576VZ7Y5H37KNF4V.json","view_paper":"https://pith.science/paper/5AD2KZWJ","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=hep-ph/9909404&json=true","fetch_graph":"https://pith.science/api/pith-number/5AD2KZWJSA576VZ7Y5H37KNF4V/graph.json","fetch_events":"https://pith.science/api/pith-number/5AD2KZWJSA576VZ7Y5H37KNF4V/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/5AD2KZWJSA576VZ7Y5H37KNF4V/action/timestamp_anchor","attest_storage":"https://pith.science/pith/5AD2KZWJSA576VZ7Y5H37KNF4V/action/storage_attestation","attest_author":"https://pith.science/pith/5AD2KZWJSA576VZ7Y5H37KNF4V/action/author_attestation","sign_citation":"https://pith.science/pith/5AD2KZWJSA576VZ7Y5H37KNF4V/action/citation_signature","submit_replication":"https://pith.science/pith/5AD2KZWJSA576VZ7Y5H37KNF4V/action/replication_record"}},"created_at":"2026-05-18T02:36:27.526803+00:00","updated_at":"2026-05-18T02:36:27.526803+00:00"}