Measurement of the angular and lifetime parameters of the decays B_d⁰→J/ψK^*0 and B_s⁰→J/ψΦ

Abstract

We present measurements of the linear polarization amplitudes and the strong relative phases that describe the flavor-untagged decays B_d⁰→ J/ψK^*0 and B_s⁰→J/ψ∅ in the transversity basis. We also measure the mean lifetime τ¯_s of the B_s⁰ mass eigenstates and the lifetime ratio τ¯_s/t_d. The analyses are based on approximately 2.8 fb^-1 of data recorded with the D0 detector. From our measurements of the angular parameters we conclude that there is no evidence for a deviation from flavor SU(3) symmetry for these decays and that the factorization assumption is not valid for the B_d⁰→J/ψ K^*0 decay.