Experiment	Measurement	Reference
Belle	\([5.6 ^{+1.6}_{-1.5}\mbox{ (stat)} \pm 1.7\mbox{ (syst)}] \times 10^{-4}\)	PRL 91,262002 (2003)
BaBar	\([0.6 \pm 0.2\mbox{ (stat)} \pm 0.1\mbox{ (syst)} ^{+0.2}_{-0.1}\mbox{ (correlated systematic)}] \times 10^{-3}\)	PRL 93,181801 (2004)
Average	\(\mathbf{[5.8 \pm 1.8\mbox{ (combined)}] \times 10^{-4}}\)