| Experiment | Measurement | Reference |
|---|---|---|
| LHCb | \([0.112 \pm 0.019\mbox{ (stat)} ^{+0.011}_{-0.014}\mbox{ (syst)}] \times 10^{0}\) | LHCb:LHCb-CONF-2011-036 (superseded) |
| LHCb | \([0.073 \pm 0.008\mbox{ (stat)} ^{+0.005}_{-0.006}\mbox{ (syst)}] \times 10^{0}\) | PRD 89, 032001 (2014) |
| Average | \(\mathbf{[0.073 ^{+0.009}_{-0.010}\mbox{ (combined)}] \times 10^{0}}\) |