Resonances in heavy meson - heavy baryon coupled-channel interactions

Abstract

The interactions of ${\bar{D}}^{(\ast )}{\Lambda }_c-{\bar{D}}^{(\ast )}{\Sigma }_c^{(\ast )}$ are studied within the framework of a dynamical coupled-channel approach. A series of bound states and resonances with different spin and parity are dynamically generated in the hidden charm sector. Four $S$-wave bound states are found in the mass range of 4.3 to 4.5 GeV, close to the pentaquark states observed by LHCb. Two of the states have a spin parity of $J^P=1/2^{-}$ and the other two have $J^P=3/2^{-}$. In addition, several resonances with different spin and parity in higher partial waves are predicted.

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Cited by in corpus (7)

• Emergence of molecular-type characteristic spectrum of hidden-charm pentaquark with strangeness embodied in the $P_{\psi s}^{\Lambda }(4338)$ and $P_{cs}(4459)$
• Light baryon resonances from a coupled-channel study including $\mathbf{K\Sigma }$ photoproduction
• Fully-charm and -bottom pentaquarks in a Lattice-QCD inspired quark model
• Molecular ${\Omega }_{cc}$ , ${\Omega }_{bb}$ and ${\Omega }_{bc}$ states
• $P_{cc}^N$ states in a unitarized coupled-channel approach
• The reaction $\pi N\to \omega N$ in a dynamical coupled-channel approach
• Molecular pentaquark states with open charm and bottom flavors