Production of $Z_{cs}$ in $B$ and $B_s$ decay

Abstract

In the present work, we investigate the production of $Z_{cs}^{+}$ in $B^{+}$ and $B_s^0$ decay, where $Z_{cs}^{+}$ is assigned as a $D_s^{+}{\bar{D}}^{\ast 0}+D_s^{\ast +}{\bar{D}}^0$ molecular state. By using an effective Lagrangian approach, we evaluate the branching ratio of $B_s^0\to K^{-}{Z}_{cs}^{+}$ and $B^{+}\to \varphi Z_{cs}^{+}$ via the triangle loop mechanism. The estimated branching fractions of $B_s^0\to K^{-}{Z}_{cs}^{+}$ and $B^{+}\to \varphi Z_{cs}^{+}$ are an order of $10^{-4}$ and $10^{-5}$, respectively. The ratio of these two branching fraction is estimated to be about 5, which indicate that the $B_s^0\to K^{\pm }{Z}_{cs}^{\mp }\to K^{+}{K}^{-}J/\psi$ may be a better process of searching $Z_{cs}$ and accessible for further experimental measurement of the Belle II and LHCb collaborations.

8 pages, 3 figures

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Cited by in corpus (8)

• An updated review of the new hadron states
• Chiral perturbation theory for heavy hadrons and chiral effective field theory for heavy hadronic molecules
• Production of $D_{s0}^{\ast }(2317)$ and $D_{s1}(2460)$ in $B$ decays as $D^{(\ast )}K$ and $D_s^{(\ast )}\eta$ molecules
• Searching for doubly charmed tetraquark candidates $T_{cc}$ and $T_{cc\bar{s}}$ in $B_c$ decays
• hidden charm decays of $X(4014)$ in a $D^{\ast }{\bar{D}}^{\ast }$ molecule scenario
• Phase shifts of the light pseudoscalar meson and heavy meson scattering in heavy meson chiral perturbation theory
• Hadronic medium effects on $Z_{cs}(3985{)}^{-}$ production in heavy-ion collisions
• Investigating ${\eta }_1^{\prime }(1855)$ exotic states in $J/\psi \to {\eta }_1^{\prime }(1855){\eta }^{(\prime )}$ decays