On three-body B^0 \to D^{*-} D^{(*)0} K^+ decays and couplings of heavy mesons to light pseudoscalar mesons
Abstract
We analyze the decay modes B^0 \to D^{*-} D^0 K^+ and B^0 \to D^{*-} D^{*0} K^+ and, using the available experimental data, we find bounds for the constants g and h describing the strong coupling of heavy mesons to light pseudoscalar mesons. Both the decay channels are dominated by broad L=1 charm resonances; the dominance is effective also in B^0 \to D^{-} D^0 K^+ and B^0 \to D^{-} D^{*0} K^+.