| Experiment | Measurement | Reference |
|---|---|---|
| Belle | \([2.1 \pm 0.2\mbox{ (stat)} \pm 0.3\mbox{ (syst)} \pm 0.5\mbox{ (Lambdac+ BF)}] \times 10^{-4}\) | PRD(RC) 75, 011101 (2007) |
| BaBar | \([21.3 \pm 1.0\mbox{ (stat)} \pm 1.0\mbox{ (syst)} \pm 5.5\mbox{ (Lambdac+ BF)}] \times 10^{-5}\) | PRD 87, 092004 (2013) |
| Average | \(\mathbf{[21.2 \pm 5.5\mbox{ (combined)}] \times 10^{-5}}\) |