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Phys. Rev. D 74, 072008 (2006) [12 pages]

Search for the decay of a B0 or B̅ 0 meson to K̅ *0K0 or K*0K̅ 0

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B. Aubert et al.
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Received 22 June 2006; published 23 October 2006

We present a search for the decay of a B0 or B̅ 0 meson to a K̅ *0K0 or K*0K̅ 0 final state, using a sample of approximately 232×106 BB̅ events collected with the BABAR detector at the PEP-II asymmetric energy e+e- collider at SLAC. The measured branching fraction is B(B0K̅ *0K0)+B(B0K*0K̅ 0)=(0.2-0.8-0.3+0.9+0.1)×10-6. We obtain the following upper limit for the branching fraction at 90% confidence level: B(B0K̅ *0K0)+B(B0K*0K̅ 0)<1.9×10-6. We use our result to constrain the standard model prediction for the deviation of the CP asymmetry in B0ϕK0 from sin⁡2β.

© 2006 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevD.74.072008
DOI:
10.1103/PhysRevD.74.072008
PACS:
13.25.Hw, 11.30.Er, 12.15.Hh