Claims & Evidence Registrar › H08

LIB2-216 · SL-13: Retained PDG |Vcb| comparator

class COMPARATORmath status (as printed) NOT_PRINTEDattachment (as printed) NOT_PRINTEDscorecard tier word (as printed) none printedhouse tier not yet assignedreview state PUBLISHEDentry version 7

Label sentence at the locator (PDF p.48 (bytes of record)):

The named CKM comparators move: |Vcb | 0.0408 ± 0.0014 → 0.0407 ± 0.0013

Statement

The ledger’s retained comparator for |Vcb| is 0.0407 ± 0.0013.

Scope

domainPDG global-fit |Vcb| comparator as ledgered
physical target|Vcb|

Sources in the suite of record

Key — use ≠ record. A review state printed on a source use below names that use — one citation of the suite, read by the lane named in its warrant — not this record. The record's own review state is the one in the table above and is unchanged by any use-level state; a use may be LANE_PROPOSED or REVIEWED while the record it sits on remains IN_REVIEW (R45, R49).

Quotes are verbatim from the sha-pinned text extraction of the Rev33.1 PDF (A1584 §2.2, S309): mathematical typography — radicals, exponents, ≅ — can appear displaced in the extracted line. The PDF page is authoritative; the quote is what the machine gate matched.

Paper 3, §2.1, Comparator refresh: Vcb — PDF p.50 (bytes of record)
review state: REVIEWED · role SUPPORTS · warrant: gemini read SUITE_TEXT_EXTRACT → SUPPORTS · grok read THE_RECORD → SUPPORTS

The named CKM comparators move: |Vcb | 0.0408 ± 0.0014 → 0.0407 ± 0.0013

Evidence (availability is not outcome)

kindreferenceline / keyavailabilitynote
externalSOURCE_LEDGER_REV32.csv, SL-13; Trackers/PDG_SCORECARD_S286.md (PDG 2026 RPP refresh, S286; A1531/T2 cross-scheme rule)SL-13shippedThe comparator row is supplied in the ledger. Its external source URL and source-status label are retained, not independently fetched or revalidated in this drafting round.

The numbers this record declares, and where each one's digits come from

This table covers the values this record DECLARES, not every numeral printed on this page: group labels such as E7(7), section numbers and page numbers are not declared values and are not listed here.

value as printedpagedigit source
0.0407PDF p.48 (bytes of record)source ledger SL-13 central
±0.0013PDF p.48 (bytes of record)source ledger SL-13 plus/minus magnitudes

Comparator card

edition2026
ledger_statusPRINTED-CITED
minus0.0013
plus0.0013
quantity|V_cb| PDG 2026
scheme_scalePDG global fit
sl_idSL-13
source_urlhttps://pdg.lbl.gov
value0.0407
value_kindcentral_value

Cards carry no σ; distances live on the claims that compare with this row (charter §10.5). Ledger: SOURCE_LEDGER_REV32.csv.

Why this record is PUBLISHED (R67, condition T-B)

states a predicateyes
uses on the record · unblocked1 · 1
uses any lane has read1 of 1
REVIEWED SUPPORTS use on the predicate, read by two non-drafting lanesyes (1)
a SUPPORTS use on the predicate is DISPUTEDno
machine certificate currentyes

Machine certificate (R68)

stateMACHINE_CHECKS_PASSED
policysgtoe-clearance-policy-1.0-RATIFIED · sha16 ef7d6e7690514311
bound to masteraad7a3ec6ce3b510 (the master the checks ran on; issued 2026-09-26T05:06Z)
checks
checkresultreason
schema_validPASSexercised
basis_currentPASSexercised
quote_locatedPASSexercised
labels_literalN/Aclass COMPARATOR not governed by the source_labels rule
edges_resolvedPASSexercised
bindings_validPASSexercised

A certificate says the record is well-formed, current, quote-on-page, label-literal, edge-resolved and binding-consistent on the bytes it was issued on. It is not a review, and it goes STALE the moment the master moves under it (R68). It is one conjunct of the PUBLISHED condition (R67), never the whole of it.

History

March library (v1) antecedentsno legacy antecedent identified
candidate ids (frozen list S304)C2-191

Drafting-lane note

C2-191 keeps the refreshed comparator distinct from the historical SL-28 row shown in the same source sentence. The formula and physical-attachment tiers of the framework’s Vcb result do not label this external input.

Receipt

round D1253 · parsed 2026-09-06T00:06Z · machine gates passed: CONTRACT, G1-quote-on-page, G2-numerals-declared, G4-ids-resolve, DAG-acyclic · content sha256 8f49e2be32c5d31865926baed7a153ff14e0c519a41781e13bf98c5b24b4e828

Review this entry

Reviewer verdict line (one per entry, as text): LIB2-216 | PASS or FAIL(G1–G8) or NOT RUN | quote | PDF page | one sentence. G1 source supports the exact scoped assertion · G2 evidence class fits (numbers ≡ digit source) · G3 labels as printed, not converted · G4 comparison typed · G6 public scope · G7 history real · G8 caution present and true. Machine surfaces: index.json · capsule.md.

Generated from library_v2.jsonl. Declared volatile fields (R36): BUILD_STAMP.
BUILD_STAMP S371a · 2026-09-26T22:53Z · master 01d1a5873ede42f5 · cut 9dcc6ce9a8ee3e02