Baryonic $B$ meson decays

Abstract

We review the two and three-body baryonic $B$ decays with the dibaryon ($\mathbf{B}{\bar{\mathbf{B}}}^{\prime }$) as the final states. Accordingly, we summarize the experimental data of the branching fractions, angular asymmetries, and $CP$ asymmetries. Using the $W$-boson annihilation (exchange) mechanism, the branching fractions of $B\to \mathbf{B}{\bar{\mathbf{B}}}^{\prime }$ are shown to be interpretable. In the approach of perturbative QCD counting rules, we study the three-body decay channels. In particular, we review the $CP$ asymmetries of $B\to \mathbf{B}{\bar{\mathbf{B}}}^{\prime }M$, which are promising to be measured by the LHCb and Belle~II experiments. Finally, we remark the theoretical challenges in interpreting $\mathcal{B}(B^{-}\to p\bar{p}{\rho }^{-})$ and $\mathcal{B}(B^{-}\to p\bar{p}{\mu }^{-}{\bar{\nu }}_{\mu })$.

arXiv comment15 pages, 3 tables, 2 figures, published version for the special issue "Heavy Flavor Physics and CP Violation" of Advances in High Energy Physics

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Cited by in corpus (9)

• Study of two-body doubly charmful baryonic $B$ decays with $SU(3)$ flavor symmetry
• Higher twist corrections to doubly-charmed baryonic $B$ decays
• Search for the rare hadronic decay $B_s^0\to p\bar{p}$
• Two-body Baryonic $B_{u,d,s}$ and $B_c$ to Charmless Final State Decays
• Angular asymmetries in $B\to \Lambda \bar{p}M$ decays
• Observation of the decays $B^{+}\to {\Sigma }_c(2455{)}^{++}{\overline{\Xi }}_c^{-}$ and $B^0\to {\Sigma }_c(2455{)}^0{\overline{\Xi }}_c^0$
• Hidden charm ${\mathcal{P}}_{cs}(4338{)}^0$ production in baryonic $B^{-}\to J/\psi \Lambda \bar{p}$ decay
• First observation of the ${\overline{B}}_s^0\to {\Lambda }_c^{+}{\overline{\Lambda }}_c{}^{-}$ decay and evidence for the ${\overline{B}}^0\to {\Lambda }_c^{+}{\overline{\Lambda }}_c{}^{-}$ decay
• Observation of the rare baryonic decay $B^{+}\to p\bar{\Lambda }$ and measurement of its weak decay parameter