Study of b-hadron to $J/ψh^+h^−$ decays

Using data collected by the LHCb detector corresponding to an integrated luminosity of 3 fb−1 , several types of b-hadron to J/ψh+h− decays are studied. Reported are the most recent results including amplitude analyses of B‾s0 and B‾0→J/ψπ+π− decays, precision measurement of lifetime ratio of Λb0 to B‾0 using Λb0→J/ψpK− , and first observation of a Cabibbo-suppressed decay Λb0→J/ψpπ− . Studies of f0(980) and f0(500) substructure are also discussed in π+π− final states.