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Measurements of branching fractions, polarizations, and direct CP-violation asymmetries in B^{+}→ρ^{0}K^{*+} and B^{+}→f_{0}(980)K^{*+} decays
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(2011) Measurements of branching fractions, polarizations, and direct CP-violation asymmetries in B^{+}→ρ^{0}K^{*+} and B^{+}→f_{0}(980)K^{*+} decays. Physical Review D (Particles, Fields, Gravitation and Cosmology), Vol.83 (No.5). article no. 051101(R). doi:10.1103/PhysRevD.83.051101 ISSN 1550-7998.
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Official URL: http://dx.doi.org/10.1103/PhysRevD.83.051101
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)×106BB̅ 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.
| Item Type: | Journal Article | ||||
|---|---|---|---|---|---|
| Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||
| Journal or Publication Title: | Physical Review D (Particles, Fields, Gravitation and Cosmology) | ||||
| Publisher: | American Physical Society | ||||
| ISSN: | 1550-7998 | ||||
| Official Date: | 2011 | ||||
| Dates: |
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| Volume: | Vol.83 | ||||
| Number: | No.5 | ||||
| Number of Pages: | 8 | ||||
| Page Range: | article no. 051101(R) | ||||
| DOI: | 10.1103/PhysRevD.83.051101 | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published |
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