Experiment	Measurement	Reference
LHCb	\([2.52 \pm 0.26\mbox{ (stat)} \pm 0.15\mbox{ (syst)}] \times 10^{-5}\)	PRD 85, 091105(R) (2012)
Average	\(\mathbf{[2.52 \pm 0.30\mbox{ (combined)}] \times 10^{-5}}\)