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

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

1994-08-29

arxiv.org/abs/hep-ph/9408382v1

Phys.Lett.B346:149-158,1995

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages and 9 Figures, ZU-TH 25/94, August 1994

Scientific paper

10.1016/0370-2693(94)01624-L

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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