{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:1995:TQGJIRWKO64VC4DVVSMAWUDBJW","short_pith_number":"pith:TQGJIRWK","canonical_record":{"source":{"id":"hep-ph/9504235","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"hep-ph","submitted_at":"1995-04-06T03:25:00Z","cross_cats_sorted":[],"title_canon_sha256":"019e70544a956f86bee278504183ca4c564f9fdda7c513517d313b8e0ab51f79","abstract_canon_sha256":"446c8f87caaf2fd0f3d4097e20bd5d657345f3daea8599f7153636f139379951"},"schema_version":"1.0"},"canonical_sha256":"9c0c9446ca77b9517075ac980b50614da08fd3a9ddb9bbecd9a52b4ea0aaa86c","source":{"kind":"arxiv","id":"hep-ph/9504235","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-ph/9504235","created_at":"2026-05-18T04:38:05Z"},{"alias_kind":"arxiv_version","alias_value":"hep-ph/9504235v1","created_at":"2026-05-18T04:38:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-ph/9504235","created_at":"2026-05-18T04:38:05Z"},{"alias_kind":"pith_short_12","alias_value":"TQGJIRWKO64V","created_at":"2026-05-18T12:25:47Z"},{"alias_kind":"pith_short_16","alias_value":"TQGJIRWKO64VC4DV","created_at":"2026-05-18T12:25:47Z"},{"alias_kind":"pith_short_8","alias_value":"TQGJIRWK","created_at":"2026-05-18T12:25:47Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:1995:TQGJIRWKO64VC4DVVSMAWUDBJW","target":"record","payload":{"canonical_record":{"source":{"id":"hep-ph/9504235","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"hep-ph","submitted_at":"1995-04-06T03:25:00Z","cross_cats_sorted":[],"title_canon_sha256":"019e70544a956f86bee278504183ca4c564f9fdda7c513517d313b8e0ab51f79","abstract_canon_sha256":"446c8f87caaf2fd0f3d4097e20bd5d657345f3daea8599f7153636f139379951"},"schema_version":"1.0"},"canonical_sha256":"9c0c9446ca77b9517075ac980b50614da08fd3a9ddb9bbecd9a52b4ea0aaa86c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:38:05.797367Z","signature_b64":"eS52HLy2rrVYaKRO01xAhQnH1vN54WZlTcdRs29H/o2krobA58//TSz7D509vvrAFUMrFFY9g/8AeYxU+KvBCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9c0c9446ca77b9517075ac980b50614da08fd3a9ddb9bbecd9a52b4ea0aaa86c","last_reissued_at":"2026-05-18T04:38:05.796819Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:38:05.796819Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"hep-ph/9504235","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T04:38:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KVi0CQqi98kl6+lFg0Kw+Uhu/q4iy2Y7wO6DB186gW/EDXvolb5UeNvl29hl02T5jtr9KVGRAFMYJ0NebYcNDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-24T04:51:29.702634Z"},"content_sha256":"94d2c9c977decbe269f1d286d0dcaff6c883de61c3fb5086de9c1619153ca48b","schema_version":"1.0","event_id":"sha256:94d2c9c977decbe269f1d286d0dcaff6c883de61c3fb5086de9c1619153ca48b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:1995:TQGJIRWKO64VC4DVVSMAWUDBJW","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Model-Independent Extraction of |V_{cb}| Using Dispersion Relations","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Benjamin Grinstein, C. Glenn Boyd, Richard F. Lebed","submitted_at":"1995-04-06T03:25:00Z","abstract_excerpt":"We present a method for parametrizing heavy meson semileptonic form factors using dispersion relations, and from it produce a two-parameter description of the B -> B elastic form factor. We use heavy quark symmetry to relate this function to B->D* l \\nu form factors, and extract |V_{cb}|=0.037^{+0.003}_{-0.002} from experimental data with a least squares fit. Our method eliminates model-dependent uncertainties inherent in choosing a parametrization for the extrapolation of the differential decay rate to threshold. The method also allows a description of B -> D l nu form factors accurate to 1% "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/9504235","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T04:38:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pIRu15LSo0tf9VhUICPrIEe7y3HsuB037NLhzqUjtHL3uUAqTWRt08L+ibc3nk/3sadWQ5q6OgKkrORZdOSLCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-24T04:51:29.703288Z"},"content_sha256":"808f06744005d4c0cf1f03759a1b2d0b31ec0c0538f562bd46b302d4554784a7","schema_version":"1.0","event_id":"sha256:808f06744005d4c0cf1f03759a1b2d0b31ec0c0538f562bd46b302d4554784a7"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/TQGJIRWKO64VC4DVVSMAWUDBJW/bundle.json","state_url":"https://pith.science/pith/TQGJIRWKO64VC4DVVSMAWUDBJW/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/TQGJIRWKO64VC4DVVSMAWUDBJW/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-05-24T04:51:29Z","links":{"resolver":"https://pith.science/pith/TQGJIRWKO64VC4DVVSMAWUDBJW","bundle":"https://pith.science/pith/TQGJIRWKO64VC4DVVSMAWUDBJW/bundle.json","state":"https://pith.science/pith/TQGJIRWKO64VC4DVVSMAWUDBJW/state.json","well_known_bundle":"https://pith.science/.well-known/pith/TQGJIRWKO64VC4DVVSMAWUDBJW/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1995:TQGJIRWKO64VC4DVVSMAWUDBJW","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"446c8f87caaf2fd0f3d4097e20bd5d657345f3daea8599f7153636f139379951","cross_cats_sorted":[],"license":"","primary_cat":"hep-ph","submitted_at":"1995-04-06T03:25:00Z","title_canon_sha256":"019e70544a956f86bee278504183ca4c564f9fdda7c513517d313b8e0ab51f79"},"schema_version":"1.0","source":{"id":"hep-ph/9504235","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-ph/9504235","created_at":"2026-05-18T04:38:05Z"},{"alias_kind":"arxiv_version","alias_value":"hep-ph/9504235v1","created_at":"2026-05-18T04:38:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-ph/9504235","created_at":"2026-05-18T04:38:05Z"},{"alias_kind":"pith_short_12","alias_value":"TQGJIRWKO64V","created_at":"2026-05-18T12:25:47Z"},{"alias_kind":"pith_short_16","alias_value":"TQGJIRWKO64VC4DV","created_at":"2026-05-18T12:25:47Z"},{"alias_kind":"pith_short_8","alias_value":"TQGJIRWK","created_at":"2026-05-18T12:25:47Z"}],"graph_snapshots":[{"event_id":"sha256:808f06744005d4c0cf1f03759a1b2d0b31ec0c0538f562bd46b302d4554784a7","target":"graph","created_at":"2026-05-18T04:38:05Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"We present a method for parametrizing heavy meson semileptonic form factors using dispersion relations, and from it produce a two-parameter description of the B -> B elastic form factor. We use heavy quark symmetry to relate this function to B->D* l \\nu form factors, and extract |V_{cb}|=0.037^{+0.003}_{-0.002} from experimental data with a least squares fit. Our method eliminates model-dependent uncertainties inherent in choosing a parametrization for the extrapolation of the differential decay rate to threshold. The method also allows a description of B -> D l nu form factors accurate to 1% ","authors_text":"Benjamin Grinstein, C. Glenn Boyd, Richard F. Lebed","cross_cats":[],"headline":"","license":"","primary_cat":"hep-ph","submitted_at":"1995-04-06T03:25:00Z","title":"Model-Independent Extraction of |V_{cb}| Using Dispersion Relations"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/9504235","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:94d2c9c977decbe269f1d286d0dcaff6c883de61c3fb5086de9c1619153ca48b","target":"record","created_at":"2026-05-18T04:38:05Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"446c8f87caaf2fd0f3d4097e20bd5d657345f3daea8599f7153636f139379951","cross_cats_sorted":[],"license":"","primary_cat":"hep-ph","submitted_at":"1995-04-06T03:25:00Z","title_canon_sha256":"019e70544a956f86bee278504183ca4c564f9fdda7c513517d313b8e0ab51f79"},"schema_version":"1.0","source":{"id":"hep-ph/9504235","kind":"arxiv","version":1}},"canonical_sha256":"9c0c9446ca77b9517075ac980b50614da08fd3a9ddb9bbecd9a52b4ea0aaa86c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9c0c9446ca77b9517075ac980b50614da08fd3a9ddb9bbecd9a52b4ea0aaa86c","first_computed_at":"2026-05-18T04:38:05.796819Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:38:05.796819Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"eS52HLy2rrVYaKRO01xAhQnH1vN54WZlTcdRs29H/o2krobA58//TSz7D509vvrAFUMrFFY9g/8AeYxU+KvBCw==","signature_status":"signed_v1","signed_at":"2026-05-18T04:38:05.797367Z","signed_message":"canonical_sha256_bytes"},"source_id":"hep-ph/9504235","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:94d2c9c977decbe269f1d286d0dcaff6c883de61c3fb5086de9c1619153ca48b","sha256:808f06744005d4c0cf1f03759a1b2d0b31ec0c0538f562bd46b302d4554784a7"],"state_sha256":"193154e776758878efbf245dd54d6fd677863e35d3815289df6d6005c03b7e5c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dtqawHo4Di6Yc2bVm2iBdgNtXa8H7nTngqzNCfjxloH5QpbrPzauIkvJCpIQZ9SmScIYfRScXCTP55u9X2TUCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-24T04:51:29.706520Z","bundle_sha256":"454081fdf440991725fd161fe7d8ff09395ffcb317714254b1e5d645b6a4f4f6"}}