We propose that the search of the $B\to D^{ *}_{ sJ}M$ decays, $M=D$, $\pi$ and $K$, can discriminate the different theoretical postulations for the nature of the recently observed $D^{ *}_{ sJ}$ mesons. The ratio of the branching ratios $B(B\to D^{ *}_{ sJ}M)/B(B\to D^{ (*)}_{ s}M)\approx 1$ (0.1) supports that the $D^{ *}_{ sJ}$ mesons are quark-antiquark (multi-quark) bound states. The Belle measurement of the $B\to D^{ *}_{ sJ}D$ branching ratios seems to indicate an unconventional picture.
Categories: hep-ph