Search for the W-exchange decays B0 --> Ds(*)- Ds(*)+

Details Search for the W-exchange decays B0 --> Ds(*)- Ds(*)+ Search for the W-exchange decays B0 --> Ds(*)- Ds(*)+

2005-10-18

arxiv.org/abs/hep-ex/0510051v1

Phys.Rev.D72:111101,2005

Physics

High Energy Physics

High Energy Physics - Experiment

8 pages, 2 figures, submitted to PRD-RC

Scientific paper

10.1103/PhysRevD.72.111101

We report a search for the decays $B^{0} \to D_{s}^{-} D_{s}^{+}$, $B^{0} \to D_{s}^{*-} D_{s}^{+}$, $B^{0} \to D_{s}^{*-} D_{s}^{*+}$ in a sample of 232 million $\Upsilon(4S)$ decays to \BBb ~pairs collected with the \babar detector at the PEP-II asymmetric-energy $e^+ e^-$ storage ring. We find no significant signal and set upper bounds for the branching fractions: ${\cal B}(B^{0} \to D_{s}^{-} D_{s}^{+}) < 1.0 \times 10^{-4}, {\cal B}(B^{0} \to D_{s}^{*-} D_{s}^{+}) < 1.3 \times 10^{-4}$ and ${\cal B}(B^{0} \to D_{s}^{*-} D_{s}^{*+}) < 2.4 \times 10^{-4}$ at 90% confidence level.

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