Experiment
Measurement
Reference
BaBar
\([2.99 \pm 0.21\mbox{ (stat)} \pm 0.45\mbox{ (syst)}] \times 10^{-4}\)
PRD 85, 092017 (2012)
Average
\(\mathbf{[2.99 \pm 0.50\mbox{ (combined)}] \times 10^{-4}}\)
