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\begin{document}
    
    
    \begin{tabular}{lS[table-format=2.2]@{$\,\pm\,$}S[table-format=1.2]S[table-format=1.3]@{$\,\pm\,$}S[table-format=1.3]}
         \toprule
         Channel & \multicolumn{2}{c}{$\epsilon_\text{tag}\,[\%]$} & \multicolumn{2}{c}{$\mathcal{D}^2\,[\%]$} \\
         \midrule
         {\small $ B\xspace\xspace^0\xspace\!\rightarrow\xspace  { J\xspace\mskip -3mu/\mskip -2mu\psi\xspace}\xspace(\rightarrow\xspace\mu\xspace^+\xspace\mu\xspace^-\xspace) K\xspace\xspace^0_{\mathrm{S}}\xspace$ \xspace}     & 85.34 & 0.05 & 4.661 & 0.013 \\
         {\small $ B\xspace\xspace^0\xspace\!\rightarrow\xspace  { J\xspace\mskip -3mu/\mskip -2mu\psi\xspace}\xspace(\rightarrow\xspace e\xspace^+\xspace e\xspace^-\xspace) K\xspace\xspace^0_{\mathrm{S}}\xspace$ \xspace}       & 92.20 & 0.08 & 6.462 & 0.032 \\
         {\small $ B\xspace\xspace^0\xspace\!\rightarrow\xspace \psi\xspace{(2S)}\xspace(\rightarrow\xspace\mu\xspace^+\xspace\mu\xspace^-\xspace) K\xspace\xspace^0_{\mathrm{S}}\xspace$ \xspace}  & 84.81 & 0.15 & 4.59  & 0.04  \\
         \bottomrule
    \end{tabular}
\end{document}
