${\cal B}(B^0 \to K^*(892)^0 \bar{K}^*(892)^0)$

ExperimentMeasurement [10-7]$\Delta\chi^2$ReferenceComments
Average$8.3 \pm1.6$8.14$p=0.52$ (ndf=9)The PDG uncertainty includes a scale factor.
PDG$8.3\,^{+2.5}_{-2.3}$pdgLive
LHCb$8.34 \pm0.63 \pm1.58$ using ${\cal B}(B_s^0 \to K^*(892)^0 \bar{K}^*(892)^0)$0.00 JHEP 07,032 (2019)Multiple systematic uncertainties are added in quadrature.
Belle$2.6\,^{+3.3}_{-2.9}\,^{+1.0}_{-0.8}$2.75 Phys.Rev.D 81,071101 (2010)
BaBar$12.8\,^{+3.5}_{-3.0} \pm1.1$1.97 Phys.Rev.Lett. 100,081801 (2008)

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

SourceParameterCorrelation [%]Value$\Delta\chi^2$
fit${\cal B}(B_s^0 \to K^*(892)^0 \bar{K}^*(892)^0)$90.2$1.10 \pm0.20 \times 10^{-5}$
fit${\cal B}(B_s^0 \to \phi(1020) \mu^+ \mu^-)$-23.5$8.65\,^{+0.66}_{-0.64} \times 10^{-7}$
fit${\cal B}(B^0 \to \phi(1020) K^*(892)^0)$16.8$1.011 \pm0.048 \times 10^{-5}$
fit${\cal B}(B_s^0 \to f_2^{\prime}(1525) \mu^+ \mu^-)$-5.3$1.66\,^{+0.26}_{-0.24} \times 10^{-7}$
fit${\cal B}(B_s^0 \to \phi(1020) \phi(1020))$5.2$1.87\,^{+0.15}_{-0.14} \times 10^{-5}$
fit${\cal B}(B_s^0 \to \phi(1020) \bar{K}^*(892)^0)$2.5$1.14 \pm0.29 \times 10^{-6}$
fit${\cal B}(B^0 \to \rho^0(770) \rho^0(770))$2.4$9.6 \pm1.5 \times 10^{-7}$
external${\cal B}(B_s^0 \to J/\psi \phi(1020))$-24.2$1.074\,^{+0.074}_{-0.073} \times 10^{-3}$0.01
Parameters of interest whose average is determined from individual measurements are called fit parameters. Parameters that are needed by the fit (in particular daughter branching fraction) and whose average is not determined here, but taken from somewhere else (usually PDG) are called external parameters.