| Experiment | Measurement | Reference |
|---|---|---|
| LHCb | \([2.8 \pm 1.0\mbox{ (stat)} \pm 0.3\mbox{ (syst)} \pm 0.2\mbox{ (fs/fd)} \pm 0.4\mbox{ (norm)}] \times 10^{-4}\) | Phys. Rev. Lett. 116, 161802 (2016) |
| Average | \(\mathbf{[2.8 \pm 1.1\mbox{ (combined)}] \times 10^{-4}}\) |