We describe searches for B meson decays to the charmless vector-vector final states ωK* and ωρ in 89×10^6 BB̅ pairs produced in e+e- annihilation at √s=10.58 GeV. We measure the following branching fractions in units of 10-6: B(B0→ωK*0)=3.4-1.6+1.8±0.4(<6.0), B(B+→ωK*+)=3.5-2.0+2.5±0.7(<7.4), B(B0→ωρ0)=0.6-1.1+1.3±0.4(<3.3), and B(B+→ωρ+)=12.6-3.3+3.7±1.6. The first error quoted is statistical, the second systematic, and the upper limits are defined at 90% confidence level. For B+→ωρ+ we also measure the longitudinal spin alignment fraction fL=0.88-0.15+0.12±0.03 and charge asymmetry Ach=(5±26±2)%.
Measurements of B meson decays to ωK* and ωρ
MARGONI, MARTINO;SIMONETTO, FRANCO;STROILI, ROBERTO;VOCI, CESARE;SIMI, GABRIELE;
2005
Abstract
We describe searches for B meson decays to the charmless vector-vector final states ωK* and ωρ in 89×10^6 BB̅ pairs produced in e+e- annihilation at √s=10.58 GeV. We measure the following branching fractions in units of 10-6: B(B0→ωK*0)=3.4-1.6+1.8±0.4(<6.0), B(B+→ωK*+)=3.5-2.0+2.5±0.7(<7.4), B(B0→ωρ0)=0.6-1.1+1.3±0.4(<3.3), and B(B+→ωρ+)=12.6-3.3+3.7±1.6. The first error quoted is statistical, the second systematic, and the upper limits are defined at 90% confidence level. For B+→ωρ+ we also measure the longitudinal spin alignment fraction fL=0.88-0.15+0.12±0.03 and charge asymmetry Ach=(5±26±2)%.
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