| Experiment | Measurement [10-5] | $\Delta\chi^2$ | Reference | Comments |
|---|---|---|---|---|
| Average | $1.029 \pm0.037$ | 0.18 | $p=0.67$ (ndf=1) | PDG uses the BABAR result including the $\chi_{c0}$ intermediate state. |
| PDG | $1.049 \pm0.037$ | pdgLive | ||
| Belle | $1.042 \pm0.043 \pm0.022$ | 0.07 | Phys.Rev.D 99,031102 (2019) | |
| BaBar | $1.01 \pm0.05 \pm0.03$ | 0.11 | Phys.Rev.D 85,112010 (2012) | Result extracted from Dalitz-plot analysis of $B^+ \to K_S^0 K_S^0 K^+$ decays. All charmonium resonances are vetoed. The analysis also reports ${\cal{B}}( B^{+} \to K^0_S K^0_S K^+ ) = (10.6 \pm 0.5 \pm 0.3) \times 10^{-6}$ including the $\chi_{c0}$ intermediate state. |