Evidence for factorization in three-body B?→D(*)K -K0 decays
Journal
Physical Review D
Journal Volume
67
Journal Issue
9
Date Issued
2003
Author(s)
Abstract
Motivated by recent experimental results, we use a factorization approach to study the three-body B̄ → D(*)K- K0 decay modes. Two mechanisms are proposed for kaon pair production: current produced (from a vacuum) and transition (from the B meson). The B̄0 → 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- → KK̄ 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(*)0K- K0 decays. By using QCD counting rules and the measured B- → D(*)0K- K0 decay rates, the measured decay spectra can be understood. © 2003 The American Physical Society.
Type
journal article