| Experiment | Measurement | Reference |
|---|---|---|
| BaBar | \([2.79 \pm 0.08\mbox{ (stat)} \pm 0.17\mbox{ (syst)} \pm 0.01\mbox{ (correlated syst)}] \times 10^{-3}\) | PRD 75 031101 (2007) |
| BaBar | \([2.99 \pm 0.23\mbox{ (stat)} \pm 0.24\mbox{ (syst)}] \times 10^{-3}\) | PRD 74 111102 (2006) |
| Average | \(\mathbf{[2.84 \pm 0.16\mbox{ (combined)}] \times 10^{-3}}\) | CL=0.6005 |