Study of baryonic decays of B mesons at $BABAR$

We report on recent $BABAR$ analyses of the baryonic $B$ decays ${\bar{B}}^0\to {\mathrm{\Lambda }}_{\mathrm{c}}^{+}\bar{p}{\pi }^{+}{\pi }^{-}$, $B^{-}\to\Sigma_{\rm c}^{++}\bar{p}\pi^{-}\pi^{-}$,$\bar{B}^{0}\to\Lambda_{\rm c}^{+}\bar{p}p\bar{p}$and$\bar{B}^{0}\to D^{0}\Lambda\bar{\Lambda}$. The used data sample contains $471\times {10}^{6}B\bar{B}$ pairs that were generated in the process $e^{+}{e}^{-}\to \mathrm{{\rm Y}}(4S)\to B\bar{B}$ 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 $\mathcal{B}({\mathrm{\Lambda }}_{\mathrm{c}}^{+}\to p{K}^{-}{\pi }^{+})$, respectively. For the decay ${\bar{B}}^0\to {\mathrm{\Lambda }}_{\mathrm{c}}^{+}\bar{p}p\bar{p}$ 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 $\mathcal{B}({\mathrm{\Lambda }}_{\mathrm{c}}^{+}\to p{K}^{-}{\pi }^{+})$ to the world average value. There is evidence for the decay $\bar{B}^{0}\to D^{0}\Lambda\bar{\Lambda}$andwemeasure${\cal B}(\bar{B}^{0}\to D^{0}\Lambda\bar{\Lambda}) = (9.8^{+2.9}{-2.6},{\rm stat}\pm1.9_{\rm syst})\times10^{-6}$correspondingtoasignificanceof$3.4\sigma$.