Measurement of the Quasi-Two-Body B Decays

We study the contributions of the $B\to \psi (3770)K[\psi (3770)\to D\bar{D}]$, $B\to K^{\ast }(1410)\pi [K^{\ast }(1410)\to K\pi ]$ and $B\to X(3872)K[X(3872)\to J\mathrm{/}\psi \gamma ,\psi (2S)\gamma ,D\bar{D}\pi ,J\mathrm{/}\psi \omega ,J\mathrm{/}\psi \pi \pi$ and $D{\bar{D}}^{\ast }\pi ]$ quasi-two-body decays. There are no existing previous measurement of the three-body branching fractions for three final states of the $X(3872)\to J\mathrm{/}\psi \gamma$, $\psi (2S)\gamma$ and $D\bar{D}\pi$ but several quasi-two-body modes that can decay to this final state have been seen.