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Evidence for Factorization in Three-body B --> D(*) K- K0 Decays

Chun-Khiang Chua·Wei-Shu Hou·Shiue-Yuan Shiau·Shang-Yuu Tsai
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Abstract

Motivated by recent experimental results, we use a factorization approach to study the three-body B --> D(*) K- K0 decay modes. Two mechanisms are proposed for kaon pair production: current-produced (from vacuum) and transition (from B meson). The Bbar0 --> D(*)+ K- K0 decay is governed solely by the current-produced mechanism. As the kaon pair can be produced only by the vector current, the matrix element can be extracted from e+ e- --> K Kbar processes via isospin relations. The decay rates obtained this way are in good agreement with experiment. Both current-produced and transition processes contribute to B- --> D(*)0 K- K0 decays. By using QCD counting rules and the measured B- --> D(*)0 K- K0 decay rates, the measured decay spectra can be understood.

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Chun-Khiang Chua, Wei-Shu Hou, Shiue-Yuan Shiau, Shang-Yuu Tsai. 2002-09-15. Evidence for Factorization in Three-body B --> D(*) K- K0 Decays. https://doi.org/10.1103/physrevd.67.034012

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