Speaker
Description
Search for the charmless baryonic decay $B^+\to\bar{\Lambda}p\bar{p}p$ is performed using proton-proton collision data recorded by the LHCb experiment, corresponding to an integrated luminosity of 5.4$\text{fb}^{-1}$. The branching fraction is measured to be $\mathcal{B}(B^+\to\bar{\Lambda}p\bar{p}p) = (2.08 \pm 0.34 \pm 0.10 \pm 0.26) \times 10^{-7}$, where the first uncertainty is statistical, the second is systematic, and the third arises from the normalization channel. The $CP$ asymmetry is measured to be $\mathcal{A}_{CP}=(5.4\pm 15.6\pm 2.4)\%$, where the uncertainties are statistical and systematic. The background-subtracted invariant mass distributions of baryon-antibaryon pairs exhibit pronounced enhancements at both kinematic thresholds.
