Rates, Polarizations, and Asymmetries in Charmless Vector-VectorBMeson Decays

With a sample of approximately 89×10⁶ BB̄ pairs collected with the BABAR detector, we perform a search for B meson decays into pairs of charmless vector mesons (φ, ρ, and K*). We measure the branching fractions, determine the degree of longitudinal polarization, and search for $CP$ violation asymmetries in the processes B⁺→φK*+, B⁰→φK*0, B⁺→ρ⁰K*+, and B⁺→ρ⁰ρ⁺. We also set an upper limit on the branching fraction for the decay B⁰→ρ⁰ρ⁰.