| Experiment | Measurement | Reference |
|---|---|---|
| Belle | \([7.82 \pm 0.38\mbox{ (stat)} \pm 0.60\mbox{ (syst)}] \times 10^{-4}\) | PRD 86 (2012) 071103 |
| BaBar | \([8.1 \pm 0.6\mbox{ (stat)} \pm 0.9\mbox{ (syst)} \pm 0.5\mbox{ (correlated syst)}] \times 10^{-4}\) | PRD 73(2006) 112004 |
| Average | \(\mathbf{[7.90 \pm 0.61\mbox{ (combined)}] \times 10^{-4}}\) |