PUBLISHED under R67 (condition T-B) — NOT house-adjudicated. Build S371a. What PUBLISHED means here (R72): two non-drafting AI lanes (gemini + grok) read this record's anchor citation on different objects and agreed it SUPPORTS the record's statement; no citation on the record is disputed as support; its machine certificate is current. What it does not mean: no person has signed off on this record (adjudication: NOT_ADJUDICATED), the drafting lane's own reads count for nothing, and 2 of 2 unblocked uses were REVIEWED — the rest were read by one lane or none. Every label shown is the label as printed in the suite of record (Rev33.1_S369 (PDF sha256 b64ddcd9e16a6dcd…)); no house tier is assigned. The state is recomputed from the uses on every build and is withdrawn if they stop justifying it. Receipt: condition R67-TB · anchor SU-598af2decfa56961b1eb578f · master 4759c9dee4bc606c · S339.

LIB2-221 · SL-18: Measured tau-mass anchor

class COMPARATORmath status (as printed) Inputattachment (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.333 (bytes of record)):

τ anchor mτ ≡ 1776.93 MeV — — Input (lepton dial)

Statement

The ledger’s measured tau-mass anchor is mτ = 1776.93 ± 0.09 MeV.

Scope

domain	PDG tau pole mass used as the suite’s external charged-lepton anchor
physical target	mτ

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 2, §3.2, Equation (16): external tau anchor — PDF p.34 (bytes of record)
review state: REVIEWED · role SUPPORTS · warrant: gemini read SUITE_TEXT_EXTRACT → SUPPORTS · grok read THE_RECORD → SUPPORTS

With the single external anchor mτ = 1776.93(9) MeV,

Appendix X, Table 4, Tau input row — PDF p.354 (bytes of record)
review state: REVIEWED · role SUPPORTS · warrant: gemini read SUITE_TEXT_EXTRACT → SUPPORTS · grok read THE_RECORD → SUPPORTS

τ anchor mτ ≡ 1776.93 MeV — — Input (lepton dial)

Evidence (availability is not outcome)

kind	reference	line / key	availability	note
external	SOURCE_LEDGER_REV32.csv, SL-18; Trackers/PDG_SCORECARD_S286.md (PDG 2026 RPP refresh, S286; A1531/T2 cross-scheme rule)	SL-18	shipped	The 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 printed	page	digit source
`1776.93`	PDF p.33 (bytes of record)	source ledger SL-18 central
`±0.09`	PDF p.33 (bytes of record)	source ledger SL-18 plus/minus magnitudes; suite Eq. (16) prints the parenthetic error (9)

Comparator card

edition	2026
ledger_status	PRINTED-CITED (suite INPUT anchor; unchanged from 2024)
minus	0.09
plus	0.09
quantity	m_tau PDG 2026 (anchor)
scheme_scale	pole
sl_id	SL-18
source_url	https://pdg.lbl.gov
unit	MeV
value	1776.93
value_kind	central_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 predicate	yes
uses on the record · unblocked	2 · 2
uses any lane has read	2 of 2
REVIEWED SUPPORTS use on the predicate, read by two non-drafting lanes	yes (2)
a SUPPORTS use on the predicate is DISPUTED	no
machine certificate current	yes

Machine certificate (R68)

state MACHINE_CHECKS_PASSED

policy sgtoe-clearance-policy-1.0-RATIFIED · sha16 ef7d6e7690514311

bound to master aad7a3ec6ce3b510 (the master the checks ran on; issued 2026-09-26T05:06Z)

checks

check	result	reason
`schema_valid`	PASS	exercised
`basis_current`	PASS	exercised
`quote_located`	PASS	exercised
`labels_literal`	N/A	class COMPARATOR not governed by the source_labels rule
`edges_resolved`	PASS	exercised
`bindings_valid`	PASS	exercised

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) antecedents	no legacy antecedent identified
candidate ids (frozen list S304)	C2-196

Drafting-lane note

C2-196 is an input anchor, not a mass predicted by the programme. Input is literal on the tau row of Appendix X p.333; it is not converted to Axiom. The explicit uncertainty is copied from SL-18 rather than calculated from the parenthetic notation. G-128 records the separate operational-anchor inventory.

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 c501c0120278ad00bd79ed689324096f5a3fd96d5922afaad1c0c251a72b1f4e

Review this entry

Reviewer verdict line (one per entry, as text): LIB2-221 | 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