Experiment	Measurement	Reference
Belle	\([15.3 \pm 3.1\mbox{ (stat)} \pm 2.9\mbox{ (syst)}] \times 10^{-4}\)	PLB 542, 171 (2002)
Average	\(\mathbf{[15.3 \pm 4.2\mbox{ (combined)}] \times 10^{-4}}\)