On three-body $B^0 \to D^{*-} D^{(*)0} K^+$ decays and couplings of heavy mesons to light pseudoscalar mesons

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 $B^0 \to D^{ -} D^{ *0} K^+$.

Categories: hep-ph