# LIB2-223 — SL-20: Direct unitarity-triangle angle comparator

- class: COMPARATOR · review_state: PUBLISHED · house_tier: not yet assigned
- labels as printed: math_status NOT_PRINTED · attachment NOT_PRINTED · scorecard tier word none (PDF p.48)
- basis: {"pdf_sha256_prefix": "b64ddcd9e16a6dcd", "release": "Rev33.1_S369"}

## Statement

The ledger’s direct unitarity-triangle angle comparator is γ = 66.4° with asymmetric errors +2.7° and −2.8°.

## Primary source

Paper 3, §2.1, Comparator refresh: direct UT angle, PDF p.50: "the direct UT-angle γ = 66.4+2.7 −2.8"

## Machine

- url: /library-v2/LIB2-223/
- content_sha256: 36aaa4f67ecbf8019920ef6afc3f7830098a8e58e10901a06e29351d5cf3a9e3
- candidate_ids: C2-198

## Freshness

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