| Experiment | Measurement [10-5] | $\Delta\chi^2$ | Reference | Comments |
|---|---|---|---|---|
| Average | $3.95 \pm0.11$ | 3.35 | $p=0.34$ (ndf=3) | The PDG uncertainty includes a scale factor. |
| PDG | $3.92 \pm0.22$ | pdgLive | ||
| Belle | $3.76 \pm0.10 \pm0.12$ | 1.53 | Phys.Rev.Lett. 119,191802 (2017) | |
| Belle II | $4.04 \pm0.13\,^{+0.13}_{-0.15}$ | 0.20 | arXiv:2411.10127 | |
| BaBar | $4.22 \pm0.14 \pm0.16$ | 1.57 | Phys.Rev.Lett. 103,211802 (2009) | |
| CLEO | $3.76\,^{+0.89}_{-0.83} \pm0.28$ | 0.05 | Phys.Rev.Lett. 84,5283 (2000) |