| Experiment | Measurement | Reference |
|---|---|---|
| Belle | \([5.75 \pm 0.26\mbox{ (stat)} \pm 0.32\mbox{ (syst)}] \times 10^{-4}\) | Phys. Rev. D 93, 052016 (2016) |
| BaBar | \([5.52 \pm 0.26\mbox{ (stat)} \pm 0.61\mbox{ (syst)}] \times 10^{-4}\) | PRD 85, 052003 (2012) |
| Average | \(\mathbf{[5.69 \pm 0.35\mbox{ (combined)}] \times 10^{-4}}\) | CL=0.7683 |