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Measurement of CP asymmetries in B-0 ->phi K-0 and B-0 -> K+ K- K-s(0) decays
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BABAR Collaboration (Including: UNSPECIFIED). (2005) Measurement of CP asymmetries in B-0 ->phi K-0 and B-0 -> K+ K- K-s(0) decays. PHYSICAL REVIEW D, 71 (9). -. doi:10.1103/PhysRevD.71.091102 ISSN 1550-7998.
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Official URL: http://dx.doi.org/10.1103/PhysRevD.71.091102
Abstract
We measure the time-dependent CP asymmetry parameters in B-0 -> K+ K- K-0 based on a data sample of approximately 227 x 10(6) B-meson pairs recorded at the Upsilon(4S) resonance with the BABAR detector at the PEP-II B-meson Factory at SLAC. We reconstruct two-body B-0 decays to phi(1020)K-S(0) and phi(1020)K-L(0), and the three-body decay K+ K- K-S(0) with phi(1020)K-S(0) excluded. For the B-0 -> phi K-0 decays, we measure sin2 beta(eff)(phi K-0) = +0.50 +/- 0.25(stat)(-0.04)(+0.07)(syst). The B-0 -> K+ K- K-S(0) decays are dominated by K+ K- S wave, as determined from an angular analysis; we measure sin2 beta(eff)((K+K-KS0)) = +0.55 +/- 0.22(stat) +/- 0.04(syst) +/- 0.11(CP), where the last error is due to the uncertainty in the fraction of CP-even contributions to the decay amplitude. We find no evidence for direct CP violation.
| Item Type: | Journal Article | ||||
|---|---|---|---|---|---|
| Subjects: | Q Science > QB Astronomy Q Science > QC Physics |
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| Journal or Publication Title: | PHYSICAL REVIEW D | ||||
| Publisher: | AMERICAN PHYSICAL SOC | ||||
| ISSN: | 1550-7998 | ||||
| Official Date: | May 2005 | ||||
| Dates: |
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| Volume: | 71 | ||||
| Number: | 9 | ||||
| Number of Pages: | 8 | ||||
| Page Range: | - | ||||
| DOI: | 10.1103/PhysRevD.71.091102 | ||||
| Publication Status: | Published |
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