Evidence for the decay B0→[omega,omega] and search for B0→[omega,phi]
We describe searches for B meson decays to the charmless vector-vector final states ωω and ωϕ with 471×106B¯B pairs produced in e+e− annihilation at √s=10.58 GeV using the BABAR detector at the PEP-II collider at the SLAC National Accelerator Laboratory. We measure the branching fraction B(B0→ωω)=(1...
Gespeichert in:
| Hauptverfasser: | , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
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5 March 2014
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| In: |
Physical review. D, Particles, fields, gravitation, and cosmology
Year: 2014, Jahrgang: 89, Heft: 5 |
| ISSN: | 1550-2368 |
| DOI: | 10.1103/PhysRevD.89.051101 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1103/PhysRevD.89.051101 Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/PhysRevD.89.051101 
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| Verfasserangaben: | BABAR Collaboration, J. P. Lees, ... A. Adametz, U. Uwer, ... |
MARC
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| 520 | |a We describe searches for B meson decays to the charmless vector-vector final states ωω and ωϕ with 471×106B¯B pairs produced in e+e− annihilation at √s=10.58 GeV using the BABAR detector at the PEP-II collider at the SLAC National Accelerator Laboratory. We measure the branching fraction B(B0→ωω)=(1.2±0.3+0.3−0.2)×10−6, where the first uncertainty is statistical and the second is systematic, corresponding to a significance of 4.4 standard deviations. We also determine the upper limit B(B0→ωϕ)<0.7×10−6 at 90% confidence level. These measurements provide the first evidence for the decay B0→ωω, and an improvement of the upper limit for the decay B0→ωϕ. | ||
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