Charmless two-body baryonicBu,d,sdecays revisited

Abstract

We study charmless two-body baryonic B decays using the topological amplitude approach.We extend a previous work to include all ground state octet and decuplet final states with full topological amplitudes. Relations on rates and CP asymmetries are obtained. The number of independent topological amplitudes is significantly reduced in the large m B asymptotic limit. With the long awaited B 0 → pp data, we can finally extract information on the topological amplitudes and predict rates of all other modes. The predicted rates are in general with uncertainties of a factor of two by including corrections to the asymptotic relations and from sub-leading contributions. We point out some modes that will cascadely decay to all charged final states and have large decay up "subleading contributions", which will affect other modes including the B 0 → pp decay. We need more data to clarify the situation. The analysis presented in this work can be systematically improved when more measurements on decay rates become available.

Study of charmless two-body baryonic $B$ decays

“…Nevertheless, these decays can be analyzed with the symmetry in QCD of the strong interaction, which have been proved to be useful in Refs. [26][27][28], in which their results are compatible with the experimental value of B(B 0 → pp) in Eq. ( 2).…”

First Observation of a BaryonicBs0Decay

“…Their study provides valuable information on the dynamics of hadronic decays of B mesons. The present analysis motivates further theoretical studies of baryonic B 0 s decays in addition to those currently published [6,8,36,37].…”

Bottom baryon decays to pseudoscalar meson and pentaquark

“…1(b). By interchanging k and l indices in the second 3 The procedure is similar to the one used in [23,24]. 4 We use subscript and superscript according to the field convention.…”