Experiment	Measurement	Reference
Belle	\([22.7 ^{+7.3}_{-6.2}\mbox{ (stat)} \pm 6.8\mbox{ (syst)}] \times 10^{-4}\)	PRL 91,262002 (2003)
BaBar	\([2.8 \pm 0.8\mbox{ (stat)} \pm 0.5\mbox{ (syst)} ^{+1.0}_{-0.6}\mbox{ (correlated systematic)}] \times 10^{-3}\)	PRL 93,181801 (2004)
Average	\(\mathbf{[24.7 \pm 7.6\mbox{ (combined)}] \times 10^{-4}}\)