# LIB2-125 — The tau-anchored muon tree estimate inherits the loaded ratio

- class: CLAIM · review_state: PUBLISHED · house_tier: not yet assigned
- labels as printed: math_status Structural · attachment Loaded-correspondence · scorecard tier word none (PDF p.34)
- basis: {"pdf_sha256_prefix": "b64ddcd9e16a6dcd", "release": "Rev33.1_S369"}

## Statement

Applying the retained muon-to-tau ratio to the measured tau anchor gives the tree estimate mµ = 106.05 MeV, with the printed +0.37% offset.

## Caution

This mass estimate inherits the target-first coefficient gap and is not independent of the measured tau anchor.

## Primary source

Paper 2, §3.2, Tau anchor, PDF p.34: "mτ = 1776.93(9) MeV,"

## Machine

- url: /library-v2/LIB2-125/
- content_sha256: 6f4a19cd53204689f1f07a3cf05c511c0c4b104d6cf856fa106b9d6e85ca7091
- candidate_ids: C2-018

## Freshness

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