Effects of new physics in the rare decays $B \to K \ell^+ \ell^-$ and $B \to K^\ast \ell^+ \ell^-$

C. Greub; A. Ioannissian; D. Wyler

doi:10.1016/0370-2693(94)01624-l

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arXiv · hep-ph/9408382

Effects of new physics in the rare decays $B \to K \ell^+ \ell^-$ and $B \to K^\ast \ell^+ \ell^-$

C. Greub·A. Ioannissian·D. Wyler

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Abstract

We parametrize phenomenologically possible new physics effects and calculate their influence on the invariant dilepton mass spectrum and the Dalitz plot for the decays $B \to K \ell^+ \ell^-$ and $B \to K^\ast \ell^+ \ell^-$. Especially the decay into $K^*$ yields a wealth of new information on the form of the new interactions since the Dalitz plot is sensitive to subtle interference effects. We also show how transversely polarized $K^*$-mesons give additional information.

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C. Greub, A. Ioannissian, D. Wyler. 1994-08-29. Effects of new physics in the rare decays $B \to K \ell^+ \ell^-$ and $B \to K^\ast \ell^+ \ell^-$. https://doi.org/10.1016/0370-2693(94)01624-l

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