Experiment	Measurement	Reference
Belle	\([0.34 ^{+0.22}_{-0.15}\mbox{ (stat)} ^{+0.05}_{-0.04}\mbox{ (syst)}] \times 10^{-7}\)	PLB 706 (2011)
Average	\(\mathbf{[0.34 ^{+0.23}_{-0.16}\mbox{ (combined)}] \times 10^{-7}}\)