Z penguins and rare B decays

Details Z penguins and rare B decays Z penguins and rare B decays

2000-09-04

arxiv.org/abs/hep-ph/0009024v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 1 figure, talk presented at ICHEP2000 (Osaka, Japan, July 27-Aug 2, 2000)

Scientific paper

Rare B decays of the type $b \to s~\ell^+\ell^-(\nu\bar\nu)$ are analyzed in a generic scenario where New Physics effects enter predominantly via $Z$ penguin contributions. We show that this possibility is both phenomenologically allowed and well motivated on theoretical grounds. The important role played in this context by the lepton forward-backward asymmetry in $B\to K^*\ell^+\ell^-$ is emphasized.

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