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UC Irvine Previously Published Works (2004)
We have performed a search for the rare leptonic decay B+ --> mu+ nu_mu with data collected at the Upsilon(4S) resonance by the BABAR experiment at the PEP-II storage ring. In a sample of 88.4 million BBbar pairs, we find no significant evidence for a signal and set an upper limit on the branching fraction BR(B+ --> mu+ nu_mu) < 6.6 x 10^{-6} at the 90% confidence level.
    Cover page: Publisher's Note: Search for the Rare Leptonic Decay B+→μ+νμ [Phys. Rev. Lett. 92, 221803 (2004)]Creative Commons 'BY' version 4.0 license
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