Experiment	Measurement	Reference
Belle	\([9.7 \pm 2.8\mbox{ (stat)} \pm 1.1\mbox{ (syst)}] \times 10^{-6}\)	PRL 111 (2013) 032001
Average	\(\mathbf{[9.7 \pm 3.0\mbox{ (combined)}] \times 10^{-6}}\)