${\cal B}(B_s^0 \to \pi^0 \pi^0)$
| Experiment | Measurement [10-6] | $\Delta\chi^2$ | Reference | Comments |
|---|
| Average | $< 7.7$ | | | |
| PDG | $< 210.0$ | | pdgLive | |
| Belle | $< 7.7$ | | ICHEP2022 | |
Input values in blue correspond to yet unpublished results.
Quoted upper limits are at 90% confidence level (CL), unless mentioned otherwise.