$\dfrac{{\cal B}(B^0 \to \mu^+ \mu^-)}{{\cal B}(B_s^0 \to \mu^+ \mu^-)}$

ExperimentMeasurement [10-2]$\Delta\chi^2$ReferenceComments
Average$< 8.1$
LHCb$< 8.1$Phys.Rev.D 105,012010 (2022)
Quoted upper limits are at 90% confidence level (CL), unless mentioned otherwise.