Experiment	Measurement	Reference
LHCb	\([1.87 ^{+1.25}_{-0.73}\mbox{ (stat)} \pm 0.19\mbox{ (syst)} \pm 0.32\mbox{ (norm)}] \times 10^{-6}\)	JHEP02(2013)043
BaBar	< \(1.9 \times 10^{-6}\)	PRD 73 (2006) 011102
Average	\(\mathbf{[1.87 ^{+1.30}_{-0.82}\mbox{ (combined)}] \times 10^{-6}}\)