| Experiment | Measurement | Reference |
|---|---|---|
| Belle | \([4.97 \pm 0.12\mbox{ (stat)} \pm 0.28\mbox{ (syst)}] \times 10^{-4}\) | Phys. Rev. D 93, 052016 (2016) |
| BaBar | \([5.11 \pm 0.14\mbox{ (stat)} \pm 0.58\mbox{ (syst)}] \times 10^{-4}\) | PRD 85, 052003 (2012) |
| Average | \(\mathbf{[5.00 \pm 0.27\mbox{ (combined)}] \times 10^{-4}}\) | CL=0.8345 |