Heavy-strange meson molecules and possible candidates $D_{s0}^{\ast }(2317)$, $D_{s1}(2460)$, and $X_0(2900)$

Abstract

In this work, we systematically investigate the heavy-strange meson systems, $D^{(\ast )}{K}^{(\ast )}/{\bar{B}}^{(\ast )}{K}^{(\ast )}$ and ${\bar{D}}^{(\ast )}{K}^{(\ast )}/B^{(\ast )}{K}^{(\ast )}$, to study possible molecules in a quasipotenial Bethe-Salpter equation approach together with the one-boson exchange model. The potential is achieved with the help of the hidden-gauge Lagrangians. Molecular states are found from all six $S$-wave isoscalar interactions of $D^{(\ast )}{K}^{(\ast )}$ or ${\bar{B}}^{(\ast )}{K}^{(\ast )}$. The charmed-strange mesons $D_{s0}^{\ast }(2317)$ and $D_{s1}(2460)$ can be related to the $DK$ and $D^{\ast }K$ states with spin parities $0^{+}$ and $1^{+}$, respectively. In the current model, the $\bar{B}{K}^{\ast }$ molecular state with $1^{+}$ is the best candidate of the recent observed $B_{sJ}(6158)$. Four molecular states are produced from the interactions of ${\bar{D}}^{(\ast )}{K}^{(\ast )}$ or $B^{(\ast )}{K}^{(\ast )}$. The relation between the ${\bar{D}}^{\ast }{K}^{\ast }$ molecular state with $0^{+}$ and the $X_0(2900)$ is also discussed. No isovector molecular states are found from the interactions considered. The current results are helpful to understand the internal structure of $D_{s0}^{\ast }(2317)$, $D_{s1}(2460)$, $X_0(2900)$, and new $B_{sJ}$ states. The experimental research for more heavy-strange meson molecules is suggested.

8 pages,5 figure

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• Possible S-wave Bound-States of Two Pseudoscalar Mesons
• Molecular picture for the $X_0(2866)$ as a $D^{\ast }{\bar{K}}^{\ast }$ $J^P=0^{+}$ state and related $1^{+},2^{+}$ states
• Effects of S-wave thresholds
• $X_0(2900)$ and $X_1(2900)$: hadronic molecules or compact tetraquarks
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• Strong decays of ${\bar{D}}^{\ast }{K}^{\ast }$ molecules and the newly observed $X_{0,1}$ states
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• Open charm and bottom tetraquarks in an extended relativized quark model
• More kaonic bound states and a comprehensive interpretation of the D_{sJ} states
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• A study of the decays of $S-$wave ${\bar{D}}^{\ast }{K}^{\ast }$ hadronic molecules: the scalar $X_0(2900)$ and its spin partners $X_{J(J=1,2)}$
• $D_{s0}(2317)$ as a tetraquark state with QCD sum rules in heavy quark limit
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• An open charm tetraquark candidate: note on $X_0(2900)$
• Hadron Spectroscopy: Theory and Experiment
• Kinematical Cusp and Resonance Interpretations of the $X(2900)$
• Molecular picture for $X_0(2900)$ and $X_1(2900)$
• Tetraquarks with open charm favor
• Monte-Carlo Based QCD Sum Rules Analysis of $X_0(2900)$ and $X_1(2900)$
• Observation of new excited $B_s^0$ states

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
• Novel coupled channel framework connecting quark model and lattice QCD: an investigation on near-threshold $D_s$ states
• The $T_{c\bar{s}}(2900)$ as a threshold effect from the interaction of the $D^{\ast }{K}^{\ast }$, $D_s^{\ast }\rho$ channels
• Heavy Flavour Physics and CP Violation at LHCb: a Ten-Year Review
• Molecular ${\Omega }_{cc}$ , ${\Omega }_{bb}$ and ${\Omega }_{bc}$ states
• The ${\bar{B}}^0\to D^{\ast +}{\bar{D}}^{\ast 0}{K}^{-}$ reaction to detect the $I=0,J^P=1^{+}$ partner of the $X_0(2866)$
• 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
• Searching for $X_0(2900)$ and $X_1(2900)$ through the kaon induced reactions
• The investigations of the $P$-wave $B_s$ states combining quark model and lattice QCD in the coupled channel framework
• Method to observe the $J^P=2^{+}$ partner of the $X_0(2866)$ in the $B^{+}\to D^{+}{D}^{-}{K}^{+}$ reaction
• Exploring the mass spectrum and the electromagnetic properties of the possible ${\Xi }_{cc}{K}^{(\ast )}$ and ${\Xi }_{cc}{\bar{K}}^{(\ast )}$ molecules
• Possible charmed-strange molecular dibaryons
• Possible open charm molecular pentaquarks from ${\Lambda }_c{K}^{(\ast )}/{\Sigma }_c{K}^{(\ast )}$ interactions
• The assignments of the $B_s$ mesons within the screened potential model and ${}^3{P}_0$ model
• Possible molecular states from interactions of charmed baryons
• Masses and radiative decay widths of the $D_{s0}^{\ast }(2317)$ and $D_{s1}^{\prime }(2460)$ and their bottom analogs
• Observation of the open-charm tetraquark candidate $T_{cs0}^{\ast }(2870{)}^0$ in the $B^{-}\to D^{-}{D}^0{K}_{\mathrm{S}}^0$ decay
• Theoretical study of the open-flavor tetraquark $T_{c\bar{s}}(2900)$ in the process ${\bar{B}}_s^0\to K^0{D}^0{\pi }^0$
• $D_1(2420)$ and its interactions with a kaon: open charm states with strangeness
• Pole analysis for the $D^{\ast }\bar{K}$-$D\overline{K^{\ast }}$ coupled-channel system
• Investigating $S$-wave bound states composed of two pseudoscalar mesons
• A coupled-channel perspective analysis on bottom-strange molecular pentaquarks
• Analysis of the hadronic molecules $DK$, $D^{\ast }K$, $D{K}^{\ast }$ and their bottom analogs with QCD sum rules
• Five-flavor molecular pentaquarks in the ${\Xi }_b^{(\prime ,\ast )}{\bar{D}}^{(\ast )}$ and ${\Xi }_c^{(\prime ,\ast )}{B}^{(\ast )}$ systems
• Exotic hadrons associated with $b$-quark
• Investigation of $T_{cs0}^{\ast }(2870{)}^0$ in $pp$ collisions at $\sqrt{s}$ = 7 TeV with the PACIAE model