| Experiment | Measurement | Reference |
|---|---|---|
| LHCb | \([8.46 \pm 0.14\mbox{ (stat)} \pm 0.29\mbox{ (syst)} \pm 0.40\mbox{ (norm)}] \times 10^{-4}\) | PRD92,032002(2015) |
| Belle | \([8.0 \pm 0.6\mbox{ (stat)} \pm 1.5\mbox{ (syst)}] \times 10^{-4}\) | PLB 553, 159 (2003) |
| Average | \(\mathbf{[8.42 \pm 0.49\mbox{ (combined)}] \times 10^{-4}}\) | CL=0.7861 |