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\begin{document}

\begin{tabular}{l|cccc}
\hline
Source&$\Delta_{\Lambda\xspace B}$ (ns$^{-1}$)& $\tau_{\Lambda\xspace^0_ b\xspace\xspace\xspace}/\tau_{\kern 0.18em\overline{\kern -0.18em  B\xspace}{}\xspace^0\xspace}$ & $\tau_{\Lambda\xspace^0_ b\xspace\xspace\xspace}$ (fs) \\
\hline
Decay time fit range &3.2& 0.0045 & 6.9 \\
Acceptance slope &2.3& 0.0033  & 5.0\\
Signal shape & 1.4 & 0.0021 & 3.2 \\
Background model &1.2& 0.0017 & 2.6  \\
$pK$ helicity &0.1& 0.0002 & 0.2\\
Acceptance function  &0.1& 0.0001 & 0.2\\
$\kern 0.18em\overline{\kern -0.18em  B\xspace}{}\xspace^0\xspace$ lifetime &-& 0.0001 & 6.8 \\
\hline   
Total &4.4& 0.0062 & 11.7\\
\hline    
\end{tabular}
\end{document}
