{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2005:VVXH5AUHIWCVGVOL37H7YGPIMS","short_pith_number":"pith:VVXH5AUH","schema_version":"1.0","canonical_sha256":"ad6e7e828745855355cbdfcffc19e8648b298de7a361c9eddadecc20c0e6bb9b","source":{"kind":"arxiv","id":"hep-ph/0509090","version":2},"attestation_state":"computed","paper":{"title":"Comment on form factor shape and extraction of |V_ub| from B --> pi l nu","license":"","headline":"","cross_cats":["hep-ex"],"primary_cat":"hep-ph","authors_text":"Richard J. Hill, Thomas Becher","submitted_at":"2005-09-09T23:54:39Z","abstract_excerpt":"We point out that current experimental data for partial B --> pi l nu branching fractions reduce the theoretical input required for a precise extraction of |V_ub| to the form factor normalization at a single value of the pion energy. We show that the heavy-quark expansion provides a bound on the form factor shape that is orders of magnitude more stringent than conventional unitarity bounds. We find |V_ub| = (3.7 +/- 0.2 +/- 0.1) x [0.8/F_+(16 GeV^2)]. The first error is from the experimental branching fractions, and the second is a conservative bound on the residual form factor shape uncertain"},"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/0509090","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"hep-ph","submitted_at":"2005-09-09T23:54:39Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"983c460c4d3ba6a7558c7b3a4f77d02efd755a309fe7c21c311347434ac02080","abstract_canon_sha256":"91dc543d976aed59776d2261636d966d784f860eb768612f7ed6c1a6480615af"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T17:24:54.690048Z","signature_b64":"OswN8Ya7cXdr5MBHn/oMtbzL6hRrBMLNgFb5ES5yc7pkNec1sIrUY2WMVZGeFD6mcpDEGlcj4tu3sAWHohEGAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ad6e7e828745855355cbdfcffc19e8648b298de7a361c9eddadecc20c0e6bb9b","last_reissued_at":"2026-07-04T17:24:54.689679Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T17:24:54.689679Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Comment on form factor shape and extraction of |V_ub| from B --> pi l nu","license":"","headline":"","cross_cats":["hep-ex"],"primary_cat":"hep-ph","authors_text":"Richard J. Hill, Thomas Becher","submitted_at":"2005-09-09T23:54:39Z","abstract_excerpt":"We point out that current experimental data for partial B --> pi l nu branching fractions reduce the theoretical input required for a precise extraction of |V_ub| to the form factor normalization at a single value of the pion energy. We show that the heavy-quark expansion provides a bound on the form factor shape that is orders of magnitude more stringent than conventional unitarity bounds. We find |V_ub| = (3.7 +/- 0.2 +/- 0.1) x [0.8/F_+(16 GeV^2)]. The first error is from the experimental branching fractions, and the second is a conservative bound on the residual form factor shape uncertain"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/0509090","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-ph/0509090/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-ph/0509090","created_at":"2026-07-04T17:24:54.689736+00:00"},{"alias_kind":"arxiv_version","alias_value":"hep-ph/0509090v2","created_at":"2026-07-04T17:24:54.689736+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-ph/0509090","created_at":"2026-07-04T17:24:54.689736+00:00"},{"alias_kind":"pith_short_12","alias_value":"VVXH5AUHIWCV","created_at":"2026-07-04T17:24:54.689736+00:00"},{"alias_kind":"pith_short_16","alias_value":"VVXH5AUHIWCVGVOL","created_at":"2026-07-04T17:24:54.689736+00:00"},{"alias_kind":"pith_short_8","alias_value":"VVXH5AUH","created_at":"2026-07-04T17:24:54.689736+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":3,"internal_anchor_count":2,"sample":[{"citing_arxiv_id":"2605.26213","citing_title":"Unitarity bounds and form-factor predictions for $B$-meson decays","ref_index":85,"is_internal_anchor":true},{"citing_arxiv_id":"2601.21155","citing_title":"Nucleon axial-vector form factor and radius from radiatively-corrected antineutrino scattering data","ref_index":57,"is_internal_anchor":true},{"citing_arxiv_id":"2604.20644","citing_title":"Review of experimental studies of charmed meson decays at BESIII","ref_index":9,"is_internal_anchor":false}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/VVXH5AUHIWCVGVOL37H7YGPIMS","json":"https://pith.science/pith/VVXH5AUHIWCVGVOL37H7YGPIMS.json","graph_json":"https://pith.science/api/pith-number/VVXH5AUHIWCVGVOL37H7YGPIMS/graph.json","events_json":"https://pith.science/api/pith-number/VVXH5AUHIWCVGVOL37H7YGPIMS/events.json","paper":"https://pith.science/paper/VVXH5AUH"},"agent_actions":{"view_html":"https://pith.science/pith/VVXH5AUHIWCVGVOL37H7YGPIMS","download_json":"https://pith.science/pith/VVXH5AUHIWCVGVOL37H7YGPIMS.json","view_paper":"https://pith.science/paper/VVXH5AUH","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=hep-ph/0509090&json=true","fetch_graph":"https://pith.science/api/pith-number/VVXH5AUHIWCVGVOL37H7YGPIMS/graph.json","fetch_events":"https://pith.science/api/pith-number/VVXH5AUHIWCVGVOL37H7YGPIMS/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/VVXH5AUHIWCVGVOL37H7YGPIMS/action/timestamp_anchor","attest_storage":"https://pith.science/pith/VVXH5AUHIWCVGVOL37H7YGPIMS/action/storage_attestation","attest_author":"https://pith.science/pith/VVXH5AUHIWCVGVOL37H7YGPIMS/action/author_attestation","sign_citation":"https://pith.science/pith/VVXH5AUHIWCVGVOL37H7YGPIMS/action/citation_signature","submit_replication":"https://pith.science/pith/VVXH5AUHIWCVGVOL37H7YGPIMS/action/replication_record"}},"created_at":"2026-07-04T17:24:54.689736+00:00","updated_at":"2026-07-04T17:24:54.689736+00:00"}