Improved branching-fraction measurements of $B_{(s)}^0\to K_S^0{h}^{+}{h}^{{}^{\prime }-}$ decays and first observation of $B_s^0\to K_S^0{K}^{+}{K}^{-}$

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1123

This paper presents a study of the charmless three-body decays $B_{(s)}^0\to K_{\mathrm{S}}^0{h}^{+}{h}^{\prime -}$ (where $h^{(\prime )}=\pi ,K$), using a sample of $pp$ collision d…