Analysis of the $T_{c\bar{s}}(2900)$ and related tetraquark states with the QCD sum rules

Abstract

In this research, we tentatively assign the $T_{c\bar{s}}(2900)$ as the $A\bar{A}$-type tetraquark state, and study the mass spectrum of the tetraquark states with strange and doubly strange, which have the spin-parity $J^P=0^{+}$, $1^{+}$ and $2^{+}$, in the framework of the QCD sum rules in details, where the $A$ denotes the axialvector diquark state. The predicted mass $M=2.92\pm 0.12\mathrm{GeV}$ is in consistent with the experimental values $M=2.892\pm 0.014\pm 0.015\mathrm{GeV}$ and $2.921\pm 0.017\pm 0.020\mathrm{GeV}$ from the LHCb collaboration and supports assigning the $T_{c\bar{s}}(2900)$ to be the $A\bar{A}$-type scalar $c\bar{s}q\bar{q}$ tetraquark state. The predictions for other tetraquark states can be confronted to the experimental data in the future to diagnose the nature of the fully open flavor exotic states.

20 pages, 7 figures

References in corpus (25)

• Amplitude analysis of the $B^{+}\to D^{+}{D}^{-}{K}^{+}$ decay
• Model-independent study of structure in $B^{+}\to D^{+}{D}^{-}{K}^{+}$ decays
• $X_0(2866)$ as a $D^{\ast }{\bar{K}}^{\ast }$ molecular state
• Analysis of the doubly-charmed tetraquark molecular states with the QCD sum rules
• $X_0(2900)$ and $X_1(2900)$: hadronic molecules or compact tetraquarks
• Open-charm tetraquark $X_c$ and open-bottom tetraquark $X_b$
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• Analysis of the $X_0(2900)$ as the scalar tetraquark state via the QCD sum rules
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• Open charm and bottom tetraquarks in an extended relativized quark model
• Analysis of the hidden-charm tetraquark molecule mass spectrum with the QCD sum rules
• The $X_0(2900)$ and its heavy quark spin partners in molecular picture
• Analysis of the $Z_{cs}(3985)$ as the axialvector tetraquark state
• An open charm tetraquark candidate: note on $X_0(2900)$
• Kinematical Cusp and Resonance Interpretations of the $X(2900)$
• The $T_{c\bar{s}}(2900)$ as a threshold effect from the interaction of the $D^{\ast }{K}^{\ast }$, $D_s^{\ast }\rho$ channels
• Analysis of the hidden-bottom tetraquark mass spectrum with the QCD sum rules
• Charmed-strange tetraquarks and their decays in a potential quark model
• On the structures of new scalar resonances $T_{cs0}^a(2900{)}^{++}$ and $T_{cs0}^a(2900{)}^0$
• Possible molecular states of ${\bar{D}}^{\ast }{K}^{\ast }$ ($D^{\ast }{K}^{\ast }$) and the new exotic states $X_0(2900)$ and $X_1(2900)$ ($T_{cs0}^a(2900{)}^0$ and $T_{cs0}^a(2900{)}^{++}$)
• The decays of the fully open flavor state $T_{c\bar{s}0}^0$ in a $D^{\ast }{K}^{\ast }$ molecule scenario
• Modeling the resonance $T_{cs0}^a(2900{)}^{++}$ as a hadronic molecule $D^{\ast +}{K}^{\ast +}$
• Color flux-tube nature of the states $T_{cs}(2900)$ and $T_{c\bar{s}}^a(2900)$
• Possibility of $T_{c\bar{s}}(2900)$ as the resonance-like structure induced by threshold effects

Cited by in corpus (6)

• Spectrum of the molecular tetraquarks: Unraveling the $T_{cs0}(2900)$ and $T_{c\bar{s}0}^a(2900)$
• The roles of the $T_{c\bar{s}0}(2900{)}^0$ and $D_0^{\ast }(2300)$ in the process $B^{-}\to D_s^{+}{K}^{-}{\pi }^{-}$
• Theoretical study of the open-flavor tetraquark $T_{c\bar{s}}(2900)$ in the process ${\bar{B}}_s^0\to K^0{D}^0{\pi }^0$
• Pole analysis for the $D^{\ast }\bar{K}$-$D\overline{K^{\ast }}$ coupled-channel system
• Exotic hadrons associated with $b$-quark
• Finding a clean process $B^{-}\to K^{-}{D}^0{K}^0$ to probe absolutely exotic four-quark states