Result of the fit for the $ B ^0 \rightarrow K ^{*0} \gamma $ (left) and $ B ^0_ s \rightarrow \phi \gamma $ (right). The black points represent the data and the fit result is represented as a solid line. The signal is fitted with a Crystal Ball function (light dashed line) and the background is described as an exponential (dark dashed line). Below each invariant mass plot, the Poisson $\chi^2$ residuals [21] are shown.

Animated gif made out of all figures.

Correction factors and corresponding uncertainties affecting the signal yields, in percent, induced by peaking backgrounds, partially reconstructed backgrounds, signal cross-feed and multiple candidates. The total uncertainty is obtained by summing the individual contributions in quadrature.

Summary of contributions to the relative systematic uncertainty on the ratio of branching fractions. Note that $f_s/f_d$ is quoted as a separate systematic uncertainty.