Observable detail · ATOM

DUNE \(\delta_{CP}\) (forward)

Prediction / mechanismForward; DUNE will measure \(\delta_{CP}\) to \(\sim 10\)° precision and adjudicate the DCT \(\delta_{CP} = \pi/3\) prediction.
MeasuredDUNE first beam expected \(\sim 2030\).
Residual / statusOPEN / FORWARD
StatusOPEN
Source paperDCT-SM-01

Mechanism

Same closed form as `delta-cp`; DUNE is the discriminating measurement.

Derivation

The derivation chain follows the cluster paper DCT-SM-01 and reduces to the canonical DCT constants (\(P_0 = 0.851\), \(\omega_0 = 50{,}037\), \(c_{BD} = 138{,}189\), master identity \(2\omega_0 + 3 = c_{BD} \cdot P_0^2 = 100{,}077\)). See the cluster paper for the full multi-line derivation.

Methodology

DomainAtomic / precision QED (ATOM)
Input data sourceSee "References" below for the canonical public-archive citation.
Measurement procedureThe measured value used here is the most recent peer-reviewed central value plus 1σ uncertainty from the cited reference.
Acceptance thresholdHIT: residual within 1σ of measurement. SOFT: directional agreement within bracketing range. OPEN: untested or unresolved.
Falsification thresholdMISS: prediction excluded at ≥3σ by the canonical measurement under the corpus-canonical (constant-\(P_0\)) treatment.
Current statusSee verdict pill above.

Python verification

Verification script: particle_physics_tests.py. Run with python3 particle_physics_tests.py to reproduce the canonical DCT result against the public-archive measurement source listed below.

Cross-references

Related observables: delta-cp · hyperk-delta-cp · dune-atmospheric.

Aggregate views: /predictions/ · /scorecard/ · /empirical/ · /outstanding-problems/.

Audit notes

This sub-page is part of the post-build-out of the observable archive (see the observable index). Verdict reflects the corpus-canonical (constant-\(P_0\)) treatment. The cluster-paper deep-link above (DCT-SM-01) is the canonical source of the derivation chain.

References

Back to all observables or the predictions table.