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Evidence for the decay B0→ωω and search for B0→ωϕ
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BaBar Collaboration (Including: Gershon, T. J., Harrison, P. F. and Latham, Thomas). (2014) Evidence for the decay B0→ωω and search for B0→ωϕ. Physical Review D (Particles, Fields, Gravitation and Cosmology), 89 (5). 051101(R). doi:10.1103/PhysRevD.89.051101 ISSN 1550-7998.
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Official URL: http://dx.doi.org/10.1103/PhysRevD.89.051101
Abstract
We describe searches for B meson decays to the charmless vector-vector final states ωω and ωϕ with 471×106BB¯ 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.
Item Type: | Journal Article | ||||
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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: | 5 March 2014 | ||||
Dates: |
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Volume: | 89 | ||||
Number: | 5 | ||||
Article Number: | 051101(R) | ||||
DOI: | 10.1103/PhysRevD.89.051101 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access |
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