Search for Decays of B^{0} Mesons into Pairs of Leptons: B{0} -> e^{+}e^{-}, B^{0} -> \mu^{+}\mu^{-} and B^{0} -> e^{\pm}\mu^{\mp}
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We search for the decays of the $B^0$ meson into $e^+e^-$, $\mu^+\mu^-$ $e^{\pm}\mu^{\mp}$ pairs in a sample of $9.7\times 10^6$ $B{\bar B}$ pairs recorded by CLEO detector. No signal is found, and the following upper limits on the corresponding branching fractions are established: $ 27$ TeV is established at 90% confidence level.
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