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Search for B0 -> J/psi D0bar and B+ -> J/psi D0bar pi+ decays

L. M. Zhang·Z. P. Zhang
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Abstract

We report the results of a search for the decay modes B0 -> J/psi D0bar and B+ -> J/psi D0bar pi+. The analysis is based on 140 $\rm fb^{-1}$ of data accumulated by the Belle detector at the KEKB asymmetric-energy $e^{+} e^{-}$ collider. No significant signals are observed and we determine the branching fraction upper limits B(B0 -> J/psi D0bar) < 2.0 10^{-5} and B(B+ -> J/psi D0bar pi+) < 2.5 10^{-5} at 90% confidence level. These results rule out the explanation of the excess in the low momentum region of the inclusive J/psi spectrum as intrinsic charm content in the B meson. The branching fractions of the corresponding non-resonant decay channels are also reported.

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L. M. Zhang, Z. P. Zhang. 2005-06-01. Search for B0 -> J/psi D0bar and B+ -> J/psi D0bar pi+ decays. https://doi.org/10.1103/physrevd.71.091107

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