| Experiment | Measurement | Reference |
|---|---|---|
| CDF | \([1.74 \pm 0.20\mbox{ (stat)} \pm 0.18\mbox{ (syst)}] \times 10^{-3}\) | PRD 58 072001 (1998) |
| Belle | \([1.19 \pm 0.01\mbox{ (stat)} \pm 0.08\mbox{ (syst)}] \times 10^{-3}\) | arXiv:1408.6457 |
| BaBar | \([13.09 \pm 0.26\mbox{ (stat)} \pm 0.74\mbox{ (syst)} \pm 0.22\mbox{ (jpsi br (correlated))}] \times 10^{-4}\) | PRL 94 141801 (2005) |
| Average | \(\mathbf{[12.70 \pm 0.56\mbox{ (combined)}] \times 10^{-4}}\) |