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\begin{document}
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\begin{tabular}{@{}c|r@{ $\pm$ }l@{  }|r@{ $\pm$ }l@{ }|r@{ $\pm$ }l@{ }|r@{\ $\pm$\ }l@{ }}
    \hline
     & \multicolumn{8}{c}{Selection efficiency (\%)} \rule{0pt}{2.6ex} \\
    \multicolumn{1}{c|}{Selection} & \multicolumn{2}{c}{$ B\xspace\xspace^0_ s\xspace\xspace\xspace\rightarrow\xspace D\xspace\xspace^+_ s\xspace\xspace\xspace D\xspace\xspace^-_ s\xspace\xspace\xspace$} & \multicolumn{2}{c}{$ B\xspace\xspace^0_ s\xspace\xspace\xspace\rightarrow\xspace  D\xspace\xspace^{*\pm}_ s\xspace\xspace\xspace D\xspace\xspace^{\mp}_ s\xspace\xspace\xspace$} & \multicolumn{2}{c}{$ B\xspace\xspace^0_ s\xspace\xspace\xspace\rightarrow\xspace D\xspace\xspace^{*+}_ s\xspace\xspace\xspace D\xspace\xspace^{*-}_ s\xspace\xspace\xspace$}  & \multicolumn{2}{c}{$ B\xspace\xspace^0\xspace\rightarrow\xspace  D\xspace\xspace^+_ s\xspace\xspace\xspace D\xspace\xspace^-\xspace$} \rule{0pt}{2.6ex}   \\ 
    \hline
    Reconstruction & 0.1184 & 0.0003 & 0.1127 & 0.0005 & 0.1061 & 0.0005 & 0.1071 & 0.0002 \rule{0pt}{2.6ex} \\
    Initial selection & 1.362 & 0.008 & 1.250 & 0.010 & 1.100 & 0.010 & 1.416 & 0.009 \\
    Mass requirements & 89.4 & 0.6 & 87.8 & 1.0 & 88.3 & 1.0 & 88.5 & 0.6 \\
    BDT & 97.9 & 0.7 & 96.6 & 1.1 & 96.7 & 1.1 & 97.6 & 0.7 \\
     $ D\xspace\xspace^+$ \xspace veto & 48.7 & 0.5 & 50.3 & 0.8 & 48.9 & 0.8 & 68.7 & 0.6 \\
     $ D\xspace\xspace^+_ s\xspace\xspace$ \xspace veto & \multicolumn{2}{c|}{$-$} & \multicolumn{2}{c|}{$-$} & \multicolumn{2}{c|}{$-$} & 64.8 & 0.7 \\
     $\Lambda\xspace^+_ c\xspace\xspace$ \xspace veto & 96.3 & 1.0 & 96.3 & 1.6 & 95.9 & 1.6 & 98.2 & 0.8 \\
    Trig. requirement & 96.6 & 0.7 & 96.7 & 1.1 & 96.6 & 1.1 & 96.8 & 0.7 \\
    PID requirements & 82.4 & 0.2 & 82.4 & 0.2 & 82.4 & 0.2 & 84.2 & 0.1 \\
    \hline
    Total & 0.0527 & 0.0067 & 0.0460 & 0.0095 & 0.0372 & 0.0081 & 0.0467 & 0.0060 \rule{0pt}{2.6ex} \\
    \hline
\end{tabular}
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