Dalitz plot of the $ D ^{\mp}_ s \rightarrow K ^\pm K ^\mp \pi ^\mp $ decay for selected $ D ^{\mp}_ s \mu^{\pm}$ candidates, with the three selection regions indicated. To suppress combinatorial background, a narrow invariant mass window, between 1950 and 1990 $ {\mathrm{ Me V /}c^2}$ , is required for the $ D ^{\mp}_ s $ candidates in this plot.

Distributions of $ K ^+ K ^- \pi ^\mp $ mass in the three Dalitz plot regions, summed over both magnet polarities and data-taking periods. Overlaid is the result of the fit, with signal and combinatorial background components as indicated in the legend.

Overview of the most precise measurements of $ a_{\rm sl}^{d}$ and $ a_{\rm sl}^{s}$ . The horizontal and vertical bands indicate the naive averages of pure $ a_{\rm sl}^{s}$ and $ a_{\rm sl}^{d}$ measurements [22,30,31,32,33,34]. The yellow ellipse represents the D0 dimuon measurement with $\Delta\Gamma_{ d } /\Gamma_{ d } $ set to its SM expectation value [5]. The error bands and contours correspond to 68% confidence level.

Animated gif made out of all figures.

Overview of contributions in the determination of $ a_{\rm sl}^{s}$ , averaged over Dalitz plot regions, magnet polarities and data taking periods, with their statistical and systematic uncertainties. All numbers are in percent. The central value of $ a_{\rm sl}^{s}$ is calculated according to Eq. 3. The uncertainties are added in quadrature and multiplied by $2/(1- f_{\rm bkg} )$, which is the same for all twelve subsamples, to obtain the uncertainties on $ a_{\rm sl}^{s}$ .