# LIB2-123 — The muon-ratio residual is the multiplicative coefficient gap

- class: CLAIM · review_state: PUBLISHED · house_tier: not yet assigned
- labels as printed: math_status NOT_PRINTED · attachment NOT_PRINTED · scorecard tier word none (PDF p.33)
- basis: {"pdf_sha256_prefix": "b64ddcd9e16a6dcd", "release": "Rev33.1_S369"}

## Statement

The +0.37% muon-to-tau residual is the multiplicative gap between Creq = 0.140894 and the offered C = 0.141421, not an additional correction above a completed derivation.

## Caution

The separate QED matching step does not supply the missing derivation of this coefficient or erase its target-first provenance.

## Primary source

Paper 2, §3.2, Required coefficient, PDF p.35: "is Creq = 0.140894;"

## Machine

- url: /library-v2/LIB2-123/
- content_sha256: 5e04be3564295b83a9c34b711191fc1a5e703dc122ceab7a3c7ae3c49dbf0676
- candidate_ids: C2-056

## Freshness

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