Search for B -> h(*) nu nubar Decays at Belle

Details Search for B -> h(*) nu nubar Decays at Belle Search for B -> h(*) nu nubar Decays at Belle

2007-07-02

arxiv.org/abs/0707.0138v2

Phys.Rev.Lett.99:221802,2007

Physics

High Energy Physics

High Energy Physics - Experiment

6 pages, 2 figures, submit to PRL

Scientific paper

10.1103/PhysRevLett.99.221802

We present a search for the rare decays B -> h(*) nu nubar, where h(*) stands for a light meson. A data sample of 535 million BBbar pairs collected with the Belle detector at the KEKB e+e- collider is used. Signal candidates are required to have an accompanying B meson fully reconstructed in a hadronic mode and signal-side particles consistent with a single h(*) meson. No significant signal is observed and we set upper limits on the branching fractions at 90% confidence level. The limits on B0 -> K*0 nu nubar and B+ -> K+ nu nubar decays are more stringent than the previous constraints, while the first searches for B0 -> K0 nu nubar, pi0 nu nubar, rho0 nu nubar, phi nu nubar and B+ -> K*+ nu nubar, rho+ nu nubar are reported.

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