Experiment	Measurement	Reference
BaBar	\([6.3 \pm 1.4\mbox{ (stat)} \pm 0.8\mbox{ (syst)} \pm 0.6\mbox{ (correlated syst)}] \times 10^{-4}\)	PRD 73(2006) 112004
Average	\(\mathbf{[6.3 \pm 1.7\mbox{ (combined)}] \times 10^{-4}}\)