${\cal B}(B_s^0 \to \gamma \gamma)$
Experiment
Measurement [10
-6
]
$\Delta\chi^2$
Reference
Comments
Average
$< 3.1$
PDG
$< 3.1$
pdgLive
Belle
$< 3.1$
Phys.Rev.D
91
,011101 (2015)
Quoted upper limits are at 90% confidence level (CL), unless mentioned otherwise.
