# LIB2-215 — SL-12: Retained PDG |Vub| 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.46)
- basis: {"pdf_sha256_prefix": "b64ddcd9e16a6dcd", "release": "Rev33.1_S369"}

## Statement

The ledger’s retained comparator for |Vub| is 0.00389 ± 0.00016.

## Primary source

Paper 3, §2, Named Vub comparator, PDF p.48: "Against the PDG 2026 direct value |Vub | = 0.00389 ± 0.00016"

## Machine

- url: /library-v2/LIB2-215/
- content_sha256: ae5ed6f140cd0d5d3df24aa93d5bc082319724d28d3544aa6724fcdab11c159f
- candidate_ids: C2-190

## Freshness

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