Experiment	Measurement	Reference
LHCb	\([0.476 \pm 0.014\mbox{ (stat)} \pm 0.010\mbox{ (syst)} \pm 0.012\mbox{ (R(psi))}] \times 10^{0}\)	Eur. Phys.J C72 (2012) 2118
Average	\(\mathbf{[0.476 \pm 0.021\mbox{ (combined)}] \times 10^{0}}\)