We report a search for the decays B0→Ds-Ds+, B0→Ds*-Ds+, and B0→Ds*-Ds*+ in a sample of 232×10^6 Υ(4S) decays to BB̅ 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: B(B0→Ds-Ds+)<1.0×10^-4, B(B0→Ds*-Ds+)<1.3×10^-4, and B(B0→Ds*-Ds*+)<2.4×10^-4 at 90% confidence level.
Search for the W-exchange decays B0→Ds(*)-Ds(*)+
SIMI, GABRIELE;MARGONI, MARTINO;SIMONETTO, FRANCO;STROILI, ROBERTO;
2005
Abstract
We report a search for the decays B0→Ds-Ds+, B0→Ds*-Ds+, and B0→Ds*-Ds*+ in a sample of 232×10^6 Υ(4S) decays to BB̅ 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: B(B0→Ds-Ds+)<1.0×10^-4, B(B0→Ds*-Ds+)<1.3×10^-4, and B(B0→Ds*-Ds*+)<2.4×10^-4 at 90% confidence level.
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