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- W4360758429 abstract "We present measurements of the branching fractions, longitudinal polarization, and direct CP-violation asymmetries for the decays B+→ρ0K*+ and B+→f0(980)K*+ with a sample of (467±5)×106BB¯ pairs collected with the BABAR detector at the PEP-II asymmetric-energy e+e− collider at the SLAC National Accelerator Laboratory. We observe B+→ρ0K*+ with a significance of 5.3σ and measure the branching fraction B(B+→ρ0K*+)=(4.6±1.0±0.4)×10−6, the longitudinal polarization fL=0.78±0.12±0.03, and the CP-violation asymmetry ACP=0.31±0.13±0.03. We observe B+→f0(980)K*+ and measure the branching fraction B(B+→f0(980)K*+)×B(f0(980)→π+π−)=(4.2±0.6±0.3)×10−6 and the CP-violation asymmetry ACP=−0.15±0.12±0.03. The first uncertainty quoted is statistical and the second is systematic.Received 22 December 2010DOI:https://doi.org/10.1103/PhysRevD.83.051101© 2011 American Physical Society" @default.
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