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Search for baryon and lepton number violating decays boldsymbol{D rightarrow pell}
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arxiv 2310.07412 v2 pith:3YCJ6N2H submitted 2023-10-11 hep-ex
Search for baryon and lepton number violating decays boldsymbol{D rightarrow pell}
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We search for the baryon and lepton number violating charm decays, $D \rightarrow p\ell$, where $D$ is either a $D^0$ or a $\overline{D}^0$ and $\ell$ is a muon or an electron, using a data sample of $921\,\mathrm{fb}^{-1}$ collected by the Belle detector at the KEKB asymmetric energy $e^{+}e^{-}$ collider. In the absence of significant signals, we set upper limits on the branching fractions in the range $(5 - 8) \times 10^{-7}$ at a 90\% confidence level, depending on the decay mode.
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