Search for B --> K(*) nu nubar and invisible quarkonium decays

J.P. Lees, H.G. Raven, Collaboration BaBar

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We search for the flavor-changing neutral-current decays B→K(*) νν̄, and the invisible decays J/ψ→νν̄ and ψ(2S)→νν̄ via B→K(*) J/ψ and B→K(*) ψ(2S), respectively, using a data sample of 471×106 BB̄ pairs collected by the BABAR experiment. We fully reconstruct the hadronic decay of one of the B mesons in the Υ(4S)→BB̄ decay, and search for the B→K(*) νν̄ decay in the rest of the event. We observe no significant excess of signal decays over background and report branching fraction upper limits of B(B
Original languageEnglish
Article number112005
JournalPhysical Review D
Issue number11
Publication statusPublished - 2013

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