Analysis profile
Flavor anomalies
Belle II · \(B^+\to K^+\nu\bar\nu\)
Forward model (pdf)The released binned likelihood provides explicit count probabilities and nuisance constraints; templates can be reweighted.
| Forward | 0.1 core-h |
|---|---|
| Params | 300 |
| Analysis | 10 core-h |
| Input | 1 MB |
| Tools | 3 |
| Code | 5000 LOC |
| Cites | 300 |
Approximate analysis-scale values; costs depend on the workload and implementation.
About this profile
An explicit probability model or likelihood, including count probabilities. Monte Carlo may have been used to prepare templates or calibrate tests.
Metrics describe the scoped analysis and are approximate unless explicitly measured. Colored squares show metric-specific size bands; they are not scores. “Cites” is a reference-count estimate, not a live citation count.
Belle II · \(B^+\to K^+\nu\bar\nu\) ¶
A released likelihood and response tables open a route from the rare \(B^+\to K^+\nu\bar\nu\) decay measurement to alternative theoretical predictions.
Reproduction status
In progress. Independent validation pending. Status updated 2026-07-17.
Statistical model ¶
Reweight the signal kinematics, apply the released response and combine signal and background templates.
Fit the signal strength, then repeat for a reweighted theoretical model.
Model ingredients ¶
Reusing this model requires the ingredients below. Availability and limitations are described in the reproduction evidence.
- Tagging categories, fitted observables and binning
- signal response and kinematic reweighting
- background templates, normalizations, nuisance constraints and correlations
- mapping to the released binned likelihood.
Reproduction objective and evidence ¶
Objective: Signal-strength profile-likelihood scan from the released likelihood, plus one worked reinterpretation
Scope and limitations: Public likelihood and response resources have been identified. The reproduction has not yet completed the Standard Model fit and reweighted reinterpretation.
A FlatPPL prototype can be found here.
Public release ¶
The HEPData reinterpretation release is the primary provenance link for the likelihood and its response resources.
Figures ¶
Reference figure from the publication cited below.
Publications ¶
- Evidence for \(B^+\to K^+\nu\bar\nu\) decays (2024) · DOI: 10.1103/PhysRevD.109.112006 · arXiv:2311.14647
- Model-agnostic likelihood for the reinterpretation of the \(B^+\to K^+\nu\bar\nu\) measurement at Belle II (2025) · DOI: 10.1103/pr66-sd36 · arXiv:2507.12393