Experiment	Measurement	Reference
Belle	\([1.73 \pm 0.70\mbox{ (stat)} ^{+0.31}_{-0.53}\mbox{ (syst)}] \times 10^{-4}\)	PRL 97, 162002 (2006)
Average	\(\mathbf{[1.73 ^{+0.77}_{-0.88}\mbox{ (combined)}] \times 10^{-4}}\)