| Experiment | Measurement | Reference |
|---|---|---|
| Belle | \([12.3 ^{+1.8}_{-1.7}\mbox{ (stat)} \pm 0.7\mbox{ (syst)}] \times 10^{-6}\) | PRD 85 (2012) 091102 |
| BaBar | < \(2.7 \times 10^{-5}\) | PRL 91 071801 (2003) |
| Average | \(\mathbf{[12.3 ^{+1.9}_{-1.8}\mbox{ (combined)}] \times 10^{-6}}\) |