| Experiment | Measurement | Reference |
|---|---|---|
| LHCb | < \(0.07\) | PRD 85, 091103(R) (2012) |
| D0 | \([21 \pm 8\mbox{ (stat)} \pm 4\mbox{ (syst)}] \times 10^{-2}\) | PRD 89 012004 (2014) |
| CDF | \([0.149 \pm 0.039\mbox{ (stat)} \pm 0.024\mbox{ (syst)}] \times 10^{0}\) | arXiv 1101.6058 |
| Average | \(\mathbf{[16.2 \pm 4.1\mbox{ (combined)}] \times 10^{-2}}\) |