CERN Accelerating science

Distributions of $D\mu$ mass for (top panel) reference candidates, formed by combining $\Dm \to K^+K^-\pi^-$ candidates with $\mu^+$ candidates, and (bottom panel) signal candidates formed by $\Dsm \to K^+K^-\pi^-$ candidates combined with $\mu^+$ candidates. The inset shows the $K^+K^-\pi^-$-mass distribution with vertical lines enclosing the \Dm (\Dsm) candidates used to form the reference (signal) candidates. The dark-filled histograms show same-sign candidate distributions.

Distributions of $D\mu$ mass for (top panel) reference candidates, formed by combining $\Dm \to K^+K^-\pi^-$ candidates with $\mu^+$ candidates, and (bottom panel) signal candidates formed by $\Dsm \to K^+K^-\pi^-$ candidates combined with $\mu^+$ candidates. The inset shows the $K^+K^-\pi^-$-mass distribution with vertical lines enclosing the \Dm (\Dsm) candidates used to form the reference (signal) candidates. The dark-filled histograms show same-sign candidate distributions.

Corrected-mass distributions for (top panel) reference $\Bz \to [K^+ K^- \pi^-]_{\DSm} \mu^+ \nu_\mu$ and (bottom panel) signal $\Bs \to [K^+K^-\pi^-]_{\DSSm} \mu^+ \nu_\mu$ candidates satisfying the selection. Results of the global composition-fit are overlaid. In the signal sample the lower- and higher-mass backgrounds are independently fit as described in the text, but merged into a single ``physics background" component in the above projection.

Corrected-mass distributions for (top panel) reference $\Bz \to [K^+ K^- \pi^-]_{\DSm} \mu^+ \nu_\mu$ and (bottom panel) signal $\Bs \to [K^+K^-\pi^-]_{\DSSm} \mu^+ \nu_\mu$ candidates satisfying the selection. Results of the global composition-fit are overlaid. In the \Bs fit projection, the lower- and higher-mass background components described in the text are displayed as a single, merged ``physics background" component.

Ratio between acceptance-corrected yields of signal $\Bs \to [K^+K^-\pi^-]_{\DSSm} \mu^+\nu_\mu$ and reference $\Bz \to [K^+K^-\pi^-]_{\DSm} \mu^+\nu_\mu$ decay yields as a function of (top panel) charm-meson and (middle panel) bottom-meson decay time. The bottom panel shows the ratio between acceptance-corrected \Bz decay yields in the $[K^+\pi^-\pi^-]_{\DSm} \mu^+\nu_\mu$ and $[K^+K^-\pi^-]_{\DSm} \mu^+\nu_\mu$ channels as a function of \Bz decay time. Fit results are overlaid. Relevant for the results is only the slope of the ratios as a function of decay time; absolute ratios, which depend on the decay yields, weighting, and efficiencies, are irrelevant.

Ratio between acceptance-corrected yields of signal $\Bs \to [K^+K^-\pi^-]_{\DSSm} \mu^+\nu_\mu$ and reference $\Bz \to [K^+K^-\pi^-]_{\DSm} \mu^+\nu_\mu$ decay yields as a function of (top panel) charm-meson and (middle panel) bottom-meson decay time. The bottom panel shows the ratio between acceptance-corrected \Bz decay yields in the $[K^+\pi^-\pi^-]_{\DSm} \mu^+\nu_\mu$ and $[K^+K^-\pi^-]_{\DSm} \mu^+\nu_\mu$ channels as a function of \Bz decay time. Fit results are overlaid. Relevant for the results is only the slope of the ratios as a function of decay time; absolute ratios, which depend on the decay yields, weighting, and efficiencies, are irrelevant.