Exploratory study of possible resonances in the heavy meson - heavy baryon coupled-channel interactions

Abstract

We use a unitary coupled-channel model to study the $\bar{D}{\Lambda }_c-\bar{D}{\Sigma }_c$ interactions. In our calculation, SU(3) flavor symmetry is applied to determine the coupling constants. Several resonant and bound states with different spin and parity are dynamically generated in the mass range of the recently observed pentaquarks. The approach is also extended to the hidden beauty sector to study the $B{\Lambda }_b-B{\Sigma }_b$ interactions. As the $b$-quark mass is heavier than the $c$-quark mass, there are more resonances observed for $B{\Lambda }_b-B{\Sigma }_b$ interactions and they are more tightly bound.

10 pages, 11 figures, updated to the published version

References in corpus (4)

• Prediction of narrow $N^{\ast }$ and ${\Lambda }^{\ast }$ resonances with hidden charm above 4 GeV
• Analytic properties of the scattering amplitude and resonances parameters in a meson exchange model
• Eta photoproduction in a combined analysis of pion- and photon-induced reactions
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Cited by in corpus (26)

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• $P_c(4457{)}^{+}$, $P_c(4440{)}^{+}$, and $P_c(4312{)}^{+}$: molecules or compact pentaquarks?
• Selected Science Opportunities for the EicC
• Nucleon Resonances with Hidden Charm in $\gamma p$ reactions
• The impact of ${\mathbf{K}}^{+}\mathbf{\Lambda }$ photoproduction on the resonance spectrum
• Magnetic moments of the hidden-charm strange pentaquark states
• Emergence of molecular-type characteristic spectrum of hidden-charm pentaquark with strangeness embodied in the $P_{\psi s}^{\Lambda }(4338)$ and $P_{cs}(4459)$
• Decay behaviors of possible ${\Lambda }_{c\bar{c}}$ states in hadronic molecule pictures
• Investigation of magnetic moment of $P_{cs}(4338)$ and $P_{cs}(4459)$ pentaquark states
• Light baryon resonances from a coupled-channel study including $\mathbf{K\Sigma }$ photoproduction
• Investigating the hidden-charm and hidden-bottom pentaquark resonances in scattering process
• Decay behavior of the strange and beauty partners of $P_c$ hadronic molecules
• Photoproduction of hidden-bottom pentaquark and related topics
• Interpretations of the new LHCb $P_c(4337{)}^{+}$ pentaquark state
• $P_{\psi s}^{\Lambda }(4459)$ and $P_{\psi s}^{\Lambda }(4338)$ as molecular states in $J/\psi \Lambda$ invariant mass spectra
• Resonances in heavy meson - heavy baryon coupled-channel interactions
• Properties of $P_c(4312)$ pentaquark and its bottom partner
• Reanalysis of the newly observed ${\Omega }^{\ast }$ state in hadronic molecule model
• Study on possible molecular states composed of ${\Lambda }_c\bar{D}$ (${\Lambda }_{b}B$) and ${\Sigma }_c\bar{D}$ (${\Sigma }_{b}B$) within the Bethe-Salpeter framework
• Identify the hidden charm pentaquark signal from non-resonant background in electron-proton scattering
• The reaction $\pi N\to \omega N$ in a dynamical coupled-channel approach
• Prediction of five-flavored pentaquarks
• A natural interpretation on the data of ${\Lambda }_c\to \Sigma \pi$