$T_{\bar{c}\bar{s}1}^f(2750)$ production in the $B^{+}$ decays processes

Abstract

In the present work, we studied the \tcs state production through the meson loop mechanism in the $B^{+}$ meson decays, where \tcs is considered as a $\bar{D}{K}^{\ast }$ molecular state with $J^P=1^{+}$. By employing the effective Lagrangian approach, we estimated the branching ratio of the $B^{+}\to D^{+}{T}_{\bar{c}\bar{s}1}^0$ and $B^{+}\to D^{\ast +}{T}_{\bar{c}\bar{s}1}^0$ processes and found them to be on the order of $10^{-5}\sim 10^{-4}$. The fit fraction of \tcs in different processes was also estimated. We propose to search for \tcs in the $B^{+}\to D^{\ast +}{\bar{D}}^{\ast -}{K}^{+}$ process, which should be accessible to the Belle II and LHCb Collaborations.

7 pages, 3 figures