Observation of the $B_s^0\to J/\psi K_{\mathrm{S}}^0{K}^{\pm }{\pi }^{\mp }$ decay

LHCb collaboration, R. Aaij, B. Adeva +696

Decays of the form $B_{(s)}^0\to J/\psi K_{\mathrm{S}}^0{h}^{+}{h}^{\left(\prime \right)-}$ ($h^{(\prime )}=K,\pi$) are searched for in proton-proton collision data corresponding to…