Experiment	Measurement	Reference
LHCb	\([20.86 \pm 0.96\mbox{ (stat)} \pm 1.34\mbox{ (syst)}] \times 10^{-2}\)	JHEP 1605 (2016) 132
Average	\(\mathbf{[20.86 \pm 1.65\mbox{ (combined)}] \times 10^{-2}}\)