With a sample of approximately 89×10^6 BB̅ 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.
Rates, polarizations, and asymmetries in charmless vector- vector B meson decays
MARGONI, MARTINO;SIMONETTO, FRANCO;STROILI, ROBERTO;SIMI, GABRIELE;
2003
Abstract
With a sample of approximately 89×10^6 BB̅ 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.File in questo prodotto:
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