| Experiment | Measurement [10-6] | $\Delta\chi^2$ | Reference | Comments |
|---|---|---|---|---|
| Average | $7.39 \pm0.65$ | 11.93 | $p=0.80$ (ndf=17) | |
| PDG | $7.32\,^{+0.69}_{-0.63}$ | pdgLive | ||
| BaBar | $7.1 \pm0.6\,^{+0.4}_{-0.3}$ | 0.17 | Phys.Rev.D 85,112010 (2012) | Result extracted from Dalitz-plot analysis of $B^0 \to K_S^0 K^+ K^-$ decays. |
| Belle | $9.0\,^{+2.2}_{-1.8} \pm0.7$ | 0.67 | Phys.Rev.Lett. 91,201801 (2003) | |
| LHCb | $( {\cal B}(\Lambda_b^0 \to \Lambda^0 \phi(1020)) / {\cal B}(B^0 \to \phi(1020) K^0) ) ( f_{\Lambda^0_b} / f_{d} ) 2$ | 0.00 | Phys.Lett.B 759,282 (2016) | |
| LHCb | ${\cal B}(B_s^0 \to K^0 \bar{K}^0) / {\cal B}(B^0 \to \phi(1020) K^0)$ | 0.04 | Phys.Rev.D 102,012011 (2020) | Multiple systematic uncertainties are added in quadrature. |
| Source | Parameter | Correlation [%] | Value | $\Delta\chi^2$ |
|---|---|---|---|---|
| fit | ${\cal B}(B_s^0 \to K^0 \bar{K}^0)$ | 37.6 | $1.77 \pm0.31 \times 10^{-5}$ | |
| fit | ${\cal B}(\Lambda_b^0 \to \Lambda^0 \phi(1020))$ | 33.2 | $1.02\,^{+0.30}_{-0.25} \times 10^{-5}$ | |
| fit | ${\cal B}(\Lambda_b^0 \to p \pi^-)$ | 0.2 | $4.64\,^{+0.92}_{-0.83} \times 10^{-6}$ | |
| fit | ${\cal B}(\Lambda_b^0 \to p K^-)$ | 0.1 | $5.5 \pm1.1 \times 10^{-6}$ | |
| fit | ${\cal B}(B^0 \to K^+ \pi^-)$ | -0.0 | $2.007 \pm0.040 \times 10^{-5}$ | |
| fit | ${\cal B}(B^0 \to \pi^+ \pi^-)$ | -0.0 | $5.36 \pm0.16 \times 10^{-6}$ | |
| fit | ${\cal B}(B_s^0 \to K^+ K^-)$ | -0.0 | $2.74\,^{+0.32}_{-0.28} \times 10^{-5}$ | |
| fit | ${\cal B}(B_s^0 \to K^- \pi^+)$ | -0.0 | $6.08\,^{+0.89}_{-0.78} \times 10^{-6}$ | |
| fit | ${\cal B}(B_s^0 \to \pi^+ \pi^-)$ | -0.0 | $7.4\,^{+1.2}_{-1.0} \times 10^{-7}$ | |
| fit | ${\cal B}(B^0 \to K^+ K^-)$ | -0.0 | $8.2 \pm1.5 \times 10^{-8}$ | |
| external | $f_{\Lambda^0_b}$ | -0.4 | $8.1 \pm1.1 \times 10^{-2}$ | 0.08 |
| external | $f_{d}$ | 0.0 | $0.4082 \pm0.0070$ | 0.00 |
| external | $\frac{f_s}{f_d}$ | -0.0 | $0.241 \pm0.023$ | 0.05 |