New physics effects inB→K(*)ννdecays

Abstract

We present a model-independent analysis of exclusive rare B decays, B→K ( * ) . The effect of possible new physics is written in terms of dimension-6 four-Fermi interactions. The lepton number violating scalarand tensor-type interactions are included, and they induce B→K ( * ) ( ) decays. We show systematically how the branching ratios and missing mass-squared spectrum depend on the coefficients of the four-Fermi interactions. ͓S0556-2821͑99͒00421-X͔ PACS number͑s͒: 13.20.He †

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