Study of baryonic decays of B mesons at $BABAR$

We report on recent $BABAR$ analyses of the baryonic $B$ decays $\bar{B}^{0}\to\Lambda_{\rm c}^{+}\bar{p}\pi^{+}\pi^{-}$, $B^{-}\to\Sigma_{\rm c}^{++}\bar{p}\pi^{-}\pi^{-}$, $\bar{B}^{0}\to\Lambda_{\rm c}^{+}\bar{p}p\bar{p}$ and $\bar{B}^{0}\to D^{0}\Lambda\bar{\Lambda}$. The used data sample contains $471\times10^{6}\,B\bar{B}$ pairs that were generated in the process $e^{+}e^{-}\to\Upsilon(4S)\to B\bar{B}$ and collected with the $BABAR$ detector at the PEP-II storage ring at SLAC. We find ${\cal B}(\bar{B}^{0}\to\Lambda_{\rm c}^{+}\bar{p}\pi^{+}\pi^{-}) = (12.3\pm0.5_{\rm stat}\pm0.7_{\rm syst}\pm3.2_{\rm\Lambda_{\rm c}})\times10^{-3}$, ${\cal B}(B^{-}\to\Sigma_{\rm c}^{++}\bar{p}\pi^{-}\pi^{-}) = (2.98\pm0.16_{\rm stat}\pm0.15_{\rm syst}\pm0.77_{\rm\Lambda_{\rm c}})\times10^{-3}$, where the last uncertainty is due to ${\cal B}(\Lambda_{\rm c}^{+}\to p K^{-}\pi^{+})$, respectively. For the decay $\bar{B}^{0}\to\Lambda_{\rm c}^{+}\bar{p}p\bar{p}$ we see no events and set an upper limit ${\cal B}(\bar{B}^{0}\to\Lambda_{\rm c}^{+}\bar{p}p\bar{p})\times \frac{{\cal B}(\Lambda_{\rm c}^{+}\to p K^{-}\pi^{+})}{0.050} < 2.8\times10^{-6}$ at $90\,\%$ CL, where we have normalized ${\cal B}(\Lambda_{\rm c}^{+}\to p K^{-}\pi^{+})$ to the world average value. There is evidence for the decay $\bar{B}^{0}\to D^{0}\Lambda\bar{\Lambda}$ and we measure ${\cal B}(\bar{B}^{0}\to D^{0}\Lambda\bar{\Lambda}) = (9.8^{+2.9}_{-2.6}\,_{\rm stat}\pm1.9_{\rm syst})\times10^{-6}$ corresponding to a significance of $3.4\sigma$.