${\cal B}(B^+ \to \eta^\prime K^+)$

ExperimentMeasurement [10-5]$\Delta\chi^2$ReferenceComments
Average$6.89 \pm0.23$3.47$p=0.48$ (ndf=4)
PDG$7.04 \pm0.25$pdgLive
BaBar$7.15 \pm0.13 \pm0.32$0.55 Phys.Rev.D 80,112002 (2009)
Belle$6.92 \pm0.22 \pm0.37$0.00 Phys.Rev.Lett. 97,061802 (2006)
Belle II$6.34\,^{+0.34}_{-0.33} \pm0.34$1.33 arXiv:2104.06224
Belle$6.1\,^{+1.0}_{-0.8} \pm0.1$0.65 Phys.Lett.B 662,323 (2008)
CLEO$8.0\,^{+1.0}_{-0.9} \pm0.7$0.94 Phys.Rev.Lett. 85,520 (2000)
LHCb${\cal B}(B_s^0 \to \eta^\prime \eta^\prime) / {\cal B}(B^+ \to \eta^\prime K^+)$0.00 Phys.Rev.Lett. 115,051801 (2015)
Input values that appear in red are not included in the PDG average.
Input values in blue correspond to yet unpublished results.

Further parameters used in the fit and their correlation with the average

SourceParameterCorrelation [%]Value$\Delta\chi^2$
fit${\cal B}(B_s^0 \to \eta^\prime \eta^\prime)$15.4$3.24 \pm0.69 \times 10^{-5}$
Parameters of interest whose average is determined from individual measurements are called fit parameters.