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\begin{tabular}{lcccc}
\hline
 Source&$\Delta_{\Lambda\xspace B}$ $(\rm ns^{-1})$& $\tau_{\Lambda\xspace^0_ b\xspace\xspace\xspace}/\tau_{\kern 0.18em\overline{\kern -0.18em  B\xspace}{}\xspace^0\xspace}$ & $\tau_{\Lambda\xspace^0_ b\xspace\xspace\xspace}$ $(\rm ps)$  \\
\hline
Signal shape         &1.5   & 0.0021  & 0.0032\\
Background model     &0.7   & 0.0010  & 0.0015  \\
Double misidentification &1.3 &0.0019 & 0.0029 \\
Acceptance slope     &2.2   & 0.0032  & 0.0049\\
Acceptance function  &0.2   & 0.0003  & 0.0004\\
Decay time fit range &0.3   & 0.0004  & 0.0006 \\
$pK$ helicity        &0.3   & 0.0004  & 0.0006\\
$\kern 0.18em\overline{\kern -0.18em  B\xspace}{}\xspace^0\xspace$ lifetime      &-     & 0.0001  & 0.0068 \\
\hline   
Total                &3.1   & 0.0044 & 0.0096\\
\hline     
 \end{tabular}
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