Evidence for Factorization in Three-body B --> D(*) K- K0 Decays
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.
Cite
@article{arxiv.hep-ph/0209164,
title = {Evidence for Factorization in Three-body B --> D(*) K- K0 Decays},
author = {Chun-Khiang Chua and Wei-Shu Hou and Shiue-Yuan Shiau and Shang-Yuu Tsai},
journal= {arXiv preprint arXiv:hep-ph/0209164},
year = {2009}
}
Comments
17 pages, 6 figures