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\begin{document}
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\begin{tabular}{lc}
  \toprule
	Requirement      & Ratio $\epsilon(\Lambda\xspace^0_ b\xspace\xspace\xspace\!\rightarrow\xspace \Lambda\xspace^+_ c\xspace\xspace\xspace \pi\xspace\xspace^-\xspace\xspace)$/$\epsilon(\Lambda\xspace^0_ b\xspace\xspace\xspace\!\rightarrow\xspace  D\xspace\xspace^-_ s\xspace\xspace\xspace p\xspace)$  \\
	\midrule 
	LHCb acceptance           & $0.9625 \pm 0.0016$ \\
	Software trigger and preselection &  $1.1370 \pm 0.0026$ \\
	Kinematic and geometric selection &  $0.7580 \pm 0.0018$ \\
	Particle identification selection &  $1.278\phantom{0} \pm 0.005\phantom{0}$  \\
 	Hardware trigger          &  $0.995\phantom{0} \pm 0.006\phantom{0}$  \\
	\midrule
	Total                     &  $1.070\phantom{0} \pm 0.010\phantom{0}$ \\
  \bottomrule
\end{tabular}
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\end{document}
