Experiment
Measurement
Reference
Belle
\([5.01 \pm 1.21\mbox{ (stat)} \pm 0.70\mbox{ (syst)}] \times 10^{-4}\)
PRD 83, 051102(R) (2011)
Average
\(\mathbf{[5.01 \pm 1.40\mbox{ (combined)}] \times 10^{-4}}\)
