Evidence for Factorization in Three-body $\bar B\to D^{(*)} K^- K^0$ Decays

Details Evidence for Factorization in Three-body $\bar B\to D^{(*)} K^- K^0$ Decays Evidence for Factorization in Three-body $\bar B\to D^{(*)} K^- K^0$ Decays

2004-01-15

arxiv.org/abs/hep-ph/0401110v2

Eur.Phys.J.C33:s253-s255,2004

Physics

High Energy Physics

High Energy Physics - Phenomenology

3 pages, 6 figures. Talk presented at EPS2003 Conference, Aachen, Germany, July 2003

Scientific paper

10.1140/epjcd/s2004-03-1580-y

Motivated by experimental results on $\bar B\to D^{(*)}K^-K^{0}$, we use a factorization approach to study these decays. Two mechanisms concerning kaon pair production arise: current-produced (from vacuum) and transition (from the $B$ meson). The kaon pair in the $\bar B {}^0\to D^{(*)+}K^-K^0$ decays can be produced only by the vector current (current-produced), whose matrix element can be extracted from $e^+e^-\to K\bar K$ processes via isospin relations. The decay rates obtained this way are in good agreement with experiment. The $B^-\to D^{(*)0}K^-K^0$ decays involve both current-produced and transition processes. By using QCD counting rules and the measured $B^-\to D^{(*)0} K^- K^0$ decay rates, the measured decay spectra can be understood.

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