Evidence for factorization in three-body (B)over-bar -> D(()*()) K(-) K(0) decays
Journal
European Physical Journal C
Journal Volume
779
Pages
S253-S255
Date Issued
2018
Author(s)
Abstract
Motivated by experimental results on B → D(∗)K− K0, 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 B0 → D(∗)+K− K0 decays can be produced only by the vector current (current-produced), whose matrix element can be extracted from e+e− → KK processes via isospin relations. The decay rates obtained this way are in good agreement with experiment. The B− → D(∗)0K− K0 decays involve both current-produced and transition processes. By using QCD counting rules and the measured B− → D(∗)0K− K0 decay rates, the measured decay spectra can be understood. PACS. 13.25.Hw - 14.40.Nd
Type
journal article