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From the isovector molecular explanation of the newly $T_{c\bar{s}}^{a0(++)}(2900)$ to possible charmed-strange molecular pentaquarks
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abstract
In this work, we adopt the one-boson-exchange model to study the $D^{(*)}K^{(*)}$ interactions. With the same parameters, we can simultaneously reproduce the masses of the $D_{s0}(2317)$, $D_{s1}(2460)$, and $T_{c\bar{s}}^{a0(++)}(2900)$ recently observed by the LHCb collaboration in the hadronic molecular picture, where the $D_{s0}(2317)$, $D_{s1}(2460)$, and $T_{c\bar{s}}^{a0(++)}(2900)$ are regarded as the $DK[I(J^P)=0(0^+)]$, $D^*K[0(1^+)]$, and $D^*K^*[1(0^+)]$ charmed-strange molecular states, respectively. In addition, we extend to study the $\Lambda_cK^{(*)}$ and $\Sigma_cK^{(*)}$ interactions and predict two possible charmed-strange molecular pentaquarks, the single $\Sigma_cK^*$ state with $I(J^P)=1/2(1/2^-)$ and $3/2(3/2^-)$. After considering the coupled channel effects, our results show that the coupled $\Lambda_cK^*/\Sigma_cK^*$ molecular state with $I(J^P)=1/2(1/2^-)$ and the coupled $\Sigma_cK/\Lambda_cK^*$ molecular state with $I(J^P)=1/2(1/2^-)$ can be good hadronic molecular candidates, the $\Lambda_cK^*({}^2S_{1/2})$ and $\Sigma_cK({}^2S_{1/2})$ are the dominant channels, respectively.
Forward citations
Cited by 6 Pith papers
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Exotic $T^*_{csJ}$ and $T^*_{c\bar{s}J}$ states and coupled-channel scattering at the $SU(3)$ flavour symmetric point from lattice QCD
First lattice QCD calculation at the SU(3) flavour symmetric point finds poles in exotic charm-light meson scattering amplitudes, linking a J^P=0+ resonance to experimental T*cs0(2870)^0 and T*c s-bar0(2900) states an...
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A coupled-channel quark model study of possible $\Xi_{cc}^{(*)} K^{(*)}$ molecular states
A quark-model calculation predicts a Ξ_ccK bound state plus four other Ξ_cc^(*)K^(*) molecular candidates with definite spin-parity and narrow widths.
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Finding a clean process $B^- \to K^- D^0 K^0$ to probe absolutely exotic four-quark states
A molecular-model fit to Belle II data gives a (9.7±3.9)% Tcs0(2900)^0 fit fraction in B−→K−D0K0, proposing a clean probe of the state.
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Predicting charmed-strange molecular tetraquarks with $K^{(*)}$ and $T$-doublet charmed or anticharmed meson
X1(2900) is interpreted as a coupled K Dbar1 / K* Dbar1 / K* Dbar2* molecule, and a series of charmed-strange molecular tetraquark partners are predicted.
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Mass spectra and electromagnetic characteristics of the $K^{(*)}\bar D^{(*)}$ and $K^{(*)}{D}^{(*)}$ molecular tetraquarks from the coupled-channel dynamics
Using coupled-channel one-boson-exchange dynamics the authors predict several K(*) bar D(*) and K(*) D(*) molecular tetraquark candidates and their electromagnetic properties.
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$T_{\bar{c}\bar{s}1}^f(2750)$ production in the $B^+$ decays processes
A model calculation predicts that a \bar D K* molecular tetraquark candidate, T_{c\bar s1}^0, should appear in B+ → D(*)+ \bar D* K decays at the 10^-4 level, with the largest fit fraction in B+ → D*+ D*- K+.
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