| Experiment | Measurement | Reference |
|---|---|---|
| Belle | \([8.52 ^{+0.39}_{-0.38}\mbox{ (stat)}] \times 10^{-3}\) | Experiment Note |
| BaBar | \([1.33 \pm 0.18\mbox{ (stat)} \pm 0.32\mbox{ (syst)}] \times 10^{-2}\) | PRD 74 (2006) 031103 |
| Average | \(\mathbf{[8.57 \pm 0.38\mbox{ (combined)}] \times 10^{-3}}\) |