DS-EPR-PAIR-01: CMS 2016 Event-Level Electron-Positron Relational Database

DS-EPR-PAIR-01 is a qualified event-level electron–positron relational database derived from CMS 2016 Open Data and associated detector-level Standard Model simulation. It contains charge-ordered true-pair tables, deterministic marginal-preserving mixed-pair tables, signed pooled Standard Model references, provenance identifiers, schema definitions, audit ledgers and reproducibility software. The collision-data construction processed 47 Run2016G DoubleEG files containing 78,797,031 events. It produced 2,782,203 selected true pairs, of which 2,776,864 were retained and matched by 2,776,864 mixed pairs. A further 5,339 selected rows excluded only because of insufficient mixing-pool size are preserved separately. The calibration Standard Model reference contains 1,773,154 true pairs and 12,523,986 signed mixed edges under two frozen normalisation conventions. It includes Drell–Yan, ttˉt\bar tttˉ, WW, WZ and ZZ simulation and preserves signed negative generator-weight contributions. The database passed its declared structural, provenance, marginal-closure, signed-weight, split-isolation, validation-sealing and reproducibility gates. No CPDD, entropy, mutual-information, calibration endpoint or validation endpoint was evaluated during database qualification. The database is a qualified research instrument and is not itself evidence for Phase Theory. The collision validation archive remains scientifically sealed pending completion of the preregistered EPR-P02 programme.