Toward charged $Z_{cs}(3985)$ structure under a reflection mechanism

Abstract

Very recently, the BESIII collaboration reported a charged hidden-charm structure with strangeness in the recoil mass of $K^{+}$ of a process $e^{+}{e}^{-}\to D_s^{\ast -}{D}^0{K}^{+}$ or $D_s^{-}{D}^{\ast 0}{K}^{+}$, which is named as $Z_{cs}(3985{)}^{-}$. The newly observed charged structure can be treated as a partner structure with strangeness of well-known $Z_c(3885{)}^{-}$ reported in a process $e^{+}{e}^{-}\to D^{\ast -}{D}^0{\pi }^{+}$. In this work, we propose a novel picture to understand the nature of $Z_{cs}(3985)$. By performing a combined analysis for the line shape of the recoil mass distribution of $K^{+}$ at five energy points $\sqrt{s}=4.628,4.641,4.661,4.681,4.698$ GeV, we find that the $Z_{cs}(3985)$ can be explained as a reflection structure of charmed-strange meson $D_{s2}^{\ast }(2573)$, which is produced from the open-charm decay of $Y(4660)$ with a $D_s^{\ast }$ meson. Furthermore, we predicted the angular distribution of final state $D_s^{\ast -}$ in process $e^{+}{e}^{-}\to D_s^{\ast -}{D}^0{K}^{+}$ based on our proposed reaction mechanism, which may be an essential criterion to test the non-resonant nature of $Z_{cs}(3985)$ further.

arXiv comment5 pages, 1 table and 3 figures

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Cited by in corpus (28)

• An updated review of the new hadron states
• Chiral perturbation theory for heavy hadrons and chiral effective field theory for heavy hadronic molecules
• Hadronic molecules in B decays
• $Z_{cs}(3985{)}^{-}$: a strange hidden-charm tetraquark resonance or not?
• Exotic ${\bar{D}}_s^{(\ast )}{D}^{(\ast )}$ molecular states and $sc\bar{q}\bar{c}$ tetraquark states with $J^P=0^{+},1^{+},2^{+}$
• Predicting the ${\bar{D}}_s^{(\ast )}{D}_s^{(\ast )}$ bound states as the partners of $X(3872)$
• Implications of the $Z_{cs}(3985)$ and $Z_{cs}(4000)$ as two different states
• A combined analysis of the $Z_c(3900)$ and the $Z_{cs}(3985)$ exotic states
• Hidden-charm tetraquarks with strangeness in the chiral quark model
• Magnetic dipole moment of the $Z_{cs}(3985)$ state: diquark-antidiquark and molecular pictures
• Correlation of the hidden-charm molecular tetraquarks and the charmoniumlike structures existing in the $B\to XYZ+K$
• Is $Z_{cs}(3982)$ a molecular partner of $Z_c(3900)$ and $Z_c(4020)$ states?
• ${\bar{D}}_s^{(\ast )}{D}^{(\ast )}$ molecular state with $J^P=1^{+}$
• Photoproduction of strange hidden-charm and hidden-bottom states
• Magnetic dipole moments of the $Z_c(4020{)}^{+}$, $Z_c(4200{)}^{+}$, $Z_{cs}(4000{)}^{+}$ and $Z_{cs}(4220{)}^{+}$ states in light-cone QCD
• Strange hidden-charm tetraquarks in constituent quark models
• Threshold effects as the origin of $Z_{cs}(4000)$, $Z_{cs}(4220)$ and $X(4700)$ observed in $B^{+}\to J/\psi \varphi K^{+}$
• Study on $Z_{cs}$ and excited $B_s^0$ states in the chiral quark model
• Production of $Z_{cs}$ in $B$ and $B_s$ decay
• $Z_{cs}$ states from the $D_s^{\ast }{\bar{D}}^{\ast }$ and $J/\psi K^{\ast }$ coupled channels: Signal in $B^{+}\to J/\psi \varphi K^{+}$ decay
• Connection between near the $D_s^{+}{D}_s^{-}$ threshold enhancement in $B^{+}\to D_s^{+}{D}_s^{-}{K}^{+}$ and conventional charmonium ${\chi }_{c0}(2P)$
• Evidence supporting the existence of $P_c(4380{)}^{\pm }$ from the recent measurements of $B_s\to J/\psi p\bar{p}$
• $Z_{cs}(3985)$ in next-to-leading-order chiral effective field theory -- the first truncation uncertainty analysis
• Hadronic medium effects on $Z_{cs}(3985{)}^{-}$ production in heavy-ion collisions
• Study of the $Y(4660)$ from a light-quark perspective
• The $Z_{cs}$ states and the mixture of hadronic molecule and diquark-anti-diquark components within effective field theory
• Spectrum of Hidden-Charm, Open-Strange Exotics in the Dynamical Diquark Model
• Hunting for the heavy quark spin symmetry partner of $Z_{cs}$