Experiment	Measurement	Reference
BaBar	\([0.7 ^{+0.4}_{-0.3}\mbox{ (stat)} \pm 0.1\mbox{ (syst)}] \times 10^{0}\)	PRD(RC) 82 011101 (2010)
Average	\(\mathbf{[0.7 ^{+0.4}_{-0.3}\mbox{ (combined)}] \times 10^{0}}\)