Experiment	Measurement	Reference
Belle	\([2.9 \pm 0.7\mbox{ (stat)} \pm 0.5\mbox{ (syst)} \pm 0.4\mbox{ (brs)}] \times 10^{-5}\)	PRD 76 (2007) 051102
Average	\(\mathbf{[2.9 \pm 0.9\mbox{ (combined)}] \times 10^{-5}}\)