ExperimentMeasurementReference
Belle\([1.30 \pm 0.34\mbox{ (stat)} \pm 0.25\mbox{ (syst)} \pm 0.18\mbox{ (k(1270) br (correlated))}] \times 10^{-3}\)PRL 87, 161601 (2001)
Average \(\mathbf{[1.30 \pm 0.46\mbox{ (combined)}] \times 10^{-3}}\)