Experiment	Measurement	Reference
Belle	\([5.0 \pm 0.4\mbox{ (stat)} \pm 1.0\mbox{ (syst)} \pm 0.4\mbox{ (model)}] \times 10^{-4}\)	PRD 69, 112002(2004)
Average	\(\mathbf{[5.0 \pm 1.1\mbox{ (combined)}] \times 10^{-4}}\)