| Experiment | Measurement [10-7] | $\Delta\chi^2$ | Reference | Comments |
|---|---|---|---|---|
| Average | $9.9 \pm1.2$ | 0.05 | $p=0.82$ (ndf=1) | Treatment of charmonium intermediate components differs between the results. |
| PDG | $9.9\,^{+1.2}_{-1.1}$ | pdgLive | ||
| Belle | $9.7\,^{+1.3}_{-1.1} \pm0.7$ | 0.01 | Phys.Rev.Lett. 103,171801 (2009) | |
| BaBar | $10.3\,^{+2.2}_{-2.1} \pm0.7$ | 0.04 | Phys.Rev.Lett. 102,091803 (2009) |