# LIB2-293 — Superseded QLC-plus-cylinder correction for the Cabibbo angle

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

## Statement

The archived numerical prompt proposed Δθ_C = arctan(α^{1/3}/(r₁₂/v)) and an adjusted Cabibbo value θ_C = QLC + Δ.

## Caution

The current framework-angle readout remains route-selected by data and does not derive the physical first-row map.

## Primary source

Paper 3, §2, Kernel-line exact-framework Cabibbo readout, PDF p.49: "the canonical current value is |Vus | = 0.225256 √ (the exact framework angle arctan( 3/ϕ2 ) = 33.4880◦ , printed from the kernel line s1162;"

## Machine

- url: /library-v2/LIB2-293/
- content_sha256: 6a89b6dc957d8fcb1aa755e822e6be7d33c3417e3a9eb8d827595ce7f23b58ac
- candidate_ids: C2-009 C2-062

## Freshness

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