Experiment	Measurement	Reference
LHCb	\([20.70 \pm 0.76\mbox{ (stat)} \pm 0.46\mbox{ (syst)} \pm 0.37\mbox{ (norm)}] \times 10^{-2}\)	JHEP 1605 (2016) 132
Average	\(\mathbf{[20.70 \pm 0.96\mbox{ (combined)}] \times 10^{-2}}\)