Claims & Evidence Registrar › H08

LIB2-220 · SL-17: Direct/MC top-mass 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 8

Label sentence at the locator (PDF p.325 (bytes of record)):

PDG 2026 direct-measurement (MC) mass 172.60 ± 0.27 GeV (the cross-section pole mass is a distinct object)

Statement

The ledger’s direct/MC top-mass comparator is 172.60 ± 0.27 GeV, distinct from the cross-section pole mass and not an MS-bar mass.

Parts of the statement (2)

Each part is a clause of the statement above, cut so that one part makes one claim. A reader naming the clause a quote supports can name the part.

Scope

domainPDG direct-measurement (MC) top mass; the cross-section pole mass is a distinct object
physical targetTop direct/MC mass

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.

Appendix X, Honest precision summary, top-quark comparator — PDF p.345 (bytes of record)
review state: REVIEWED · role SUPPORTS · warrant: gemini read SUITE_TEXT_EXTRACT → SUPPORTS · grok read THE_RECORD → SUPPORTS

PDG 2026 direct-measurement (MC) mass 172.60 ± 0.27 GeV (the cross-section pole mass is a distinct object)

Evidence (availability is not outcome)

kindreferenceline / keyavailabilitynote
externalSOURCE_LEDGER_REV32.csv, SL-17; Trackers/PDG_SCORECARD_S286.md (PDG 2026 RPP refresh, S286; A1531/T2 cross-scheme rule)SL-17shippedThe 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
172.60PDF p.325 (bytes of record)source ledger SL-17 central
±0.27PDF p.325 (bytes of record)source ledger SL-17 plus/minus magnitudes

Comparator card

edition2026
ledger_statusPRINTED-CITED (cross-scheme comparator; status-ineligible d_cmp)
minus0.27
plus0.27
quantitym_t direct/MC PDG 2026
scheme_scaledirect (MC) mass, not MS-bar
sl_idSL-17
source_urlhttps://pdg.lbl.gov
unitGeV
value172.60
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)C2-195

Drafting-lane note

C2-195 preserves the direct/MC convention printed in Appendix X and SL-17. Paper 2 p.36 instead uses pole-mass wording; that discrepancy is not silently reconciled. The ledger’s cross-scheme warning concerns comparison with the framework tree estimate, not an uncertainty calculation on this card.

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 633449e91a4df71c71951b7120831f01151310603120e8af7f6460f9bfb5b0f8

Review this entry

Reviewer verdict line (one per entry, as text): LIB2-220 | 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