| Experiment | Measurement [10-4] | $\Delta\chi^2$ | Reference | Comments |
|---|---|---|---|---|
| Average | $< 4.6$ | Derived from the ratio in the previous entry using ${\cal B} (B^+ \to K^0 \pi^+) = (23.97 \pm 0.53 \pm 0.71)\times 10^{-6}$, $f_u=0.33$ and $f_c=0.001$. | ||
| LHCb | $< 4.6$ | Phys.Lett.B 726,646 (2013) |