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Evidence for the Rare Decay B^{+}→Λ[over ¯]pμ^{+}μ^{-}

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A search for the rare decay B^{+}→Λ[over ¯]pμ^{+}μ^{-} is performed using proton-proton collision data recorded by the LHCb experiment at a center-of-mass energy of sqrt[s]=13 TeV, corresponding to an integrated luminosity of 5.4 fb^{-1}. An excess of eve... ...