This title appears in the Scientific Report :
2014
Please use the identifier:
http://hdl.handle.net/2128/8208 in citations.
Please use the identifier: http://dx.doi.org/10.1103/PhysRevD.89.051101 in citations.
Evidence for the decay B0→ωω and search for B0→ωϕ
Evidence for the decay B0→ωω and search for B0→ωϕ
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)=(...
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Please use the identifier: http://dx.doi.org/10.1103/PhysRevD.89.051101 in citations.
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. |