2021/12/31 by Xiang-Nan Jin, Chia-Wei Liu, Chao-Qiang Geng
Mathematics · Physics and Astronomy · #Baryon #Branching fraction #Combinatorics #High-Energy Particle Collisions Research #Mathematics #Octet #Particle physics #Particle physics theoretical and experimental studies #Physics #Prime (order theory) #Quantum Chromodynamics and Particle Interactions #hep-ex #hep-ph
paper · pdf · doi:10.1103/physrevd.105.053005
published as Phys. Rev. D105, 053005 (2022) · 15 pages, 2 figures, published version
openalex publication_date 2022/03/14 · arxiv created 2022/03/15 · arxiv updated 2022/03/16 · openalex created_date 2022/04/03 · openalex updated_date 2026/08/05
We study the charmless two-body decays of B→ \bf Bn \bf Bn^′ with B = ( B+ , B0 , B0s) and \bf Bn(′) the low-lying octet baryons. The factorizable amplitudes are calculated by the modified bag model, while the nonfactorizable ones are extracted from the experimental data with the SU(3)F flavor symmetry. We are able to explain all current experimental measurements and provide predictions on the decay branching ratios in B→ \bf Bn \bf Bn^′. Particularly, we find that \cal B(Bs0 → Ξ0 Ξ0) = (19.3± 2.7 )× 10-7 and \cal B(Bs0 → Ξ- Ξ-) = (19.4± 2.7 )× 10-7, which are sizable and able to be observed in the ongoing experiments at LHCb and BELLE-II. Furthermore, the decay branching ratios of Bs0 → (pp, nn) and B0 → (Ξ0 Ξ0 ,Σ+Σ+) are expected to be O(10-10), which are suppressed due to the angular momentum conservation and chiral symmetry.