Mass spectrum and strong decays of tetraquark $\bar{c}\bar{s}qq$ states

Abstract

We systematically study the mass spectrum and strong decays of the S-wave $\bar{c}\bar{s}qq$ states in the compact tetraquark scenario with the quark model. The key ingredients of the model are the Coulomb, the linear confinement, and the hyperfine interactions. The hyperfine potential leads to the mixing between different color configurations, as well as the large mass splitting between the two ground states with $I(J^P)=0(0^{+})$ and $I(J^P)=1(0^{+})$. We calculate their strong decay amplitudes into the ${\bar{D}}^{(\ast )}{K}^{(\ast )}$ channels with the wave functions from the mass spectrum calculation and the quark interchange method. We examine the interpretation of the recently observed $X_0(2900)$ as a tetraquark state. The mass and decay width of the $I(J^P)=1(0^{+})$ state are $M=2941$ MeV and ${\Gamma }_X=26.6$ MeV, respectively, which indicates that it might be a good candidate for the $X_0(2900)$. Meanwhile, we also obtain an isospin partner state $I(J^P)=0(0^{+})$ with $M=2649$ MeV and ${\Gamma }_{X\to \bar{D}K}=48.1$ MeV, respectively. Future experimental search for $X(2649)$ will be very helpful.

arXiv comment11 pages, 4 figures

References in corpus (37)

• Amplitude analysis of the $B^{+}\to D^{+}{D}^{-}{K}^{+}$ decay
• Model-independent study of structure in $B^{+}\to D^{+}{D}^{-}{K}^{+}$ decays
• A new interpretation for the $D_{s2}^{\ast }(2573)$ and the prediction of novel exotic charmed mesons
• Spectrum of the fully-heavy tetraquark state $QQ{\bar{Q}}^{\prime }{\bar{Q}}^{\prime }$
• $X_0(2866)$ as a $D^{\ast }{\bar{K}}^{\ast }$ molecular state
• Molecular picture for the $X_0(2866)$ as a $D^{\ast }{\bar{K}}^{\ast }$ $J^P=0^{+}$ state and related $1^{+},2^{+}$ states
• $X_0(2900)$ and $X_1(2900)$: hadronic molecules or compact tetraquarks
• Stable double-heavy tetraquarks: spectrum and structure
• Open-charm tetraquark $X_c$ and open-bottom tetraquark $X_b$
• First exotic hadron with open heavy flavor: $cs\bar{u}\bar{d}$ tetraquark
• Triangle singularity as the origin of $X_0(2900)$ and $X_1(2900)$ observed in $B^{+}\to D^{+}{D}^{-}{K}^{+}$
• Analysis of the $X_0(2900)$ as the scalar tetraquark state via the QCD sum rules
• Strong decays of ${\bar{D}}^{\ast }{K}^{\ast }$ molecules and the newly observed $X_{0,1}$ states
• Open charm and bottom tetraquarks in an extended relativized quark model
• Probing hidden-charm decay properties of $P_c$ states in a molecular scenario
• Search for the X(5568) state decaying into ${\mathrm{B}}_{\mathrm{s}}^0{\pi }^{\pm }$ in proton-proton collisions at $\sqrt{s}=$ 8 TeV
• A study of the decays of $S-$wave ${\bar{D}}^{\ast }{K}^{\ast }$ hadronic molecules: the scalar $X_0(2900)$ and its spin partners $X_{J(J=1,2)}$
• The $X_0(2900)$ and its heavy quark spin partners in molecular picture
• Spectrum and rearrangement decays of tetraquark states with four different flavors
• $X(5568)$ and and its partner states
• $X_{0,1}$(2900) and $(D^{-}{K}^{+})$ invariant mass from QCD Laplace sum rules at NLO
• Meson-Meson Scattering in the Quark Model: Spin Dependence and Exotic Channels
• NN Core Interactions and Differential Cross Sections from One Gluon Exchange
• BB Intermeson Potentials in the Quark Model
• Search for a Structure in the $B_s^0{\pi }^{\pm }$ Invariant Mass Spectrum with the ATLAS Experiment
• A search for the exotic meson $X(5568)$ with the Collider Detector at Fermilab
• Kinematical Cusp and Resonance Interpretations of the $X(2900)$
• Discriminating among interpretations for the $X(2900)$ states
• Charmed partner of the exotic $X(5568)$ state and its properties
• Branching fractions of $B^{-}\to D^{-}{X}_{0,1}(2900)$ and their implications
• I=3/2 $K\pi$ Scattering in the Nonrelativisitic Quark Potential Model
• The strong decay patterns of $Z_c$ and $Z_b$ states in the relativized quark model
• The hidden-charm strong decays of the $Z_c$ states
• $X_J(2900)$ states in a hot hadronic medium
• Decays of $X(3872)$ to ${\chi }_{cJ}{\pi }^0$ and $J/\psi {\pi }^{+}{\pi }^{-}$
• Decay modes of the scalar exotic meson $T_{bs;\overline{u}\overline{d}}^{-}$
• In the Pursuit of $X(5568)$ and its Charmed Partner

Cited by in corpus (35)

• An updated review of the new hadron states
• Hadronic molecules in B decays
• Doubly heavy tetraquarks in an extended chromomagnetic model
• Heavy-strange meson molecules and possible candidates $D_{s0}^{\ast }(2317)$, $D_{s1}(2460)$, and $X_0(2900)$
• How to understand the $X(2900)$?
• The $\mathbf{sQ}\bar{\mathbf{q}}\bar{\mathbf{q}}$ $(\mathbf{q}=\mathbf{u},\mathbf{d};\mathbf{Q}=\mathbf{c},\mathbf{b})$ tetraquarks in the chiral quark model
• Charmed-strange tetraquarks and their decays in a potential quark model
• Newly observed $X(4630)$: a new charmoniumlike molecule
• Mass spectra and decays of open-heavy tetraquark states
• On the structures of new scalar resonances $T_{cs0}^a(2900{)}^{++}$ and $T_{cs0}^a(2900{)}^0$
• Vector resonance $X_1(2900)$ and its structure
• Modeling the resonance $T_{cs0}^a(2900{)}^{++}$ as a hadronic molecule $D^{\ast +}{K}^{\ast +}$
• Spectrum of the molecular tetraquarks: Unraveling the $T_{cs0}(2900)$ and $T_{c\bar{s}0}^a(2900)$
• Color flux-tube nature of the states $T_{cs}(2900)$ and $T_{c\bar{s}}^a(2900)$
• The ${\bar{B}}^0\to D^{\ast +}{\bar{D}}^{\ast 0}{K}^{-}$ reaction to detect the $I=0,J^P=1^{+}$ partner of the $X_0(2866)$
• Possibility of $T_{c\bar{s}}(2900)$ as the resonance-like structure induced by threshold effects
• Unified description of the $Qs\bar{q}\bar{q}$ molecular bound states, molecular resonances and compact tetraquark states in the quark potential model
• Prediction of possible $D{K}_1$ bound states
• The roles of the $T_{c\bar{s}0}(2900{)}^0$ and $D_0^{\ast }(2300)$ in the process $B^{-}\to D_s^{+}{K}^{-}{\pi }^{-}$
• Magnetic moment of the $X_1(2900)$ state in the diquark-antidiquark picture
• Looking for the exotic $X_0(2866)$ and its $J^P=1^{+}$ partner in the ${\bar{B}}^0\to D^{(\ast )+}{K}^{-}{K}^{(\ast )0}$ reactions
• Molecular states of $D^{\ast }{D}^{\ast }{\bar{K}}^{\ast }$ nature
• Searching for $X_0(2900)$ and $X_1(2900)$ through the kaon induced reactions
• Is the resonance $X_0(2900)$ a ground-state or radially excited scalar tetraquark $[ud][\overline{c}\overline{s}]$?
• Method to observe the $J^P=2^{+}$ partner of the $X_0(2866)$ in the $B^{+}\to D^{+}{D}^{-}{K}^{+}$ reaction
• Doubly charmed hexaquarks in the diquark picture
• Exotic molecular meson states of $B^{(\ast )}{K}^{(\ast )}$ nature
• Double pole structures of $X_1(2900)$ as the $P$-wave ${\bar{D}}^{\ast }{K}^{\ast }$ resonances
• Weak-decay searches for $Qs\bar{u}\bar{d}$ tetraquarks
• Observation of the open-charm tetraquark candidate $T_{cs0}^{\ast }(2870{)}^0$ in the $B^{-}\to D^{-}{D}^0{K}_{\mathrm{S}}^0$ decay
• Predictions of super-exotic heavy mesons from $K^{\ast }{B}^{\ast }{B}^{\ast }$ interactions
• $D_1(2420)$ and its interactions with a kaon: open charm states with strangeness
• Investigation of $T_{cs0}^{\ast }(2870{)}^0$ in $pp$ collisions at $\sqrt{s}$ = 7 TeV with the PACIAE model
• Exotic hadrons associated with $b$-quark
• Systematic exploration of triply heavy tetraquarks: spectroscopic and decay characteristics