${\cal B}(B^+ \to \mu^+ \nu_{\mu} \gamma)$
Experiment
Measurement [10
-6
]
$\Delta\chi^2$
Reference
Comments
Average
$< 3.4$
PDG
$< 3.4$
pdgLive
Belle
$< 3.4$
Phys.Rev.D
98
,112016 (2018)
$E_\gamma > 1~\text{GeV}$.
BaBar
$< 26.0$
Phys.Rev.D
80
,111105 (2009)
Quoted upper limits are at 90% confidence level (CL), unless mentioned otherwise.