| Experiment | Measurement [10-5] | $\Delta\chi^2$ | Reference | Comments |
|---|---|---|---|---|
| Average | $4.21 \pm0.11$ | 5.33 | $p=0.25$ (ndf=4) | The PDG uncertainty includes a scale factor. |
| PDG | $4.18 \pm0.25$ | pdgLive | ||
| Belle | $3.96 \pm0.07 \pm0.14$ | 2.57 | Phys.Rev.Lett. 119,191802 (2017) | |
| BaBar | $4.47 \pm0.10 \pm0.16$ | 1.88 | Phys.Rev.Lett. 103,211802 (2009) | |
| Belle II | $4.5 \pm0.3 \pm0.2$ | 0.64 | arXiv:2110.08219 | |
| CLEO | $4.55\,^{+0.72}_{-0.68} \pm0.34$ | 0.19 | Phys.Rev.Lett. 84,5283 (2000) | |
| LHCb | ${\cal B}(B_s^0 \to \phi(1020) \gamma) / {\cal B}(B^0 \to K^*(892)^0 \gamma)$ | 0.01 | Nucl.Phys.B 867,1 (2013) | |
| LHCb | $( {\cal B}(\Lambda_b^0 \to \Lambda^0 \gamma) / {\cal B}(B^0 \to K^*(892)^0 \gamma) ) \frac{f_{\Lambda^0_b}}{f_d}$ | 0.00 | Phys.Rev.Lett. 123,031801 (2019) |
| Source | Parameter | Correlation [%] | Value | $\Delta\chi^2$ |
|---|---|---|---|---|
| fit | ${\cal B}(B_s^0 \to \phi(1020) \gamma)$ | 24.6 | $3.44 \pm0.33 \times 10^{-5}$ | |
| fit | ${\cal B}(\Lambda_b^0 \to \Lambda^0 \gamma)$ | 12.2 | $6.9 \pm1.5 \times 10^{-6}$ | |
| external | $\frac{f_{\Lambda^0_b}}{f_d}$ | -0.0 | $0.6000 \pm0.0050$ | 0.00 |