Experiment	Measurement	Reference
BaBar	\([0.6 \pm 0.2\mbox{ (stat)} \pm 0.1\mbox{ (syst)}] \times 10^{-5}\)	PRD(RC) 82 011101 (2010)
Average	\(\mathbf{[0.6 \pm 0.2\mbox{ (combined)}] \times 10^{-5}}\)