Systematical study of ${\Omega }_c$-like molecular states from interactions ${\Xi }_c^{{(}^{\prime },\ast )}{\bar{K}}^{(\ast )}$ and ${\Xi }^{(\ast )}{D}^{(\ast )}$

Abstract

In this work, the ${\Omega }_c$-like molecular states are systematically investigated in a quasipotential Bethe-Salpeter equation approach. The relevant interactions ${\Xi }_c^{(\ast {,}^{\prime })}{\bar{K}}^{(\ast )}$, ${\Xi }^{(\ast )}{D}^{(\ast )}$, and ${\Omega }_c^{(\ast )}(\pi /\eta /\rho /\omega )$ are described by light meson exchanges with the help of the effective Lagrangians with SU(3), chiral, and heavy quark symmetries. The obtained potential kernels of considered interactions are inserted into the quasipotential Bethe-Salpeter equation, and coupled-channel calculations are performed to find possible molecular states and its couplings to the channels considered. The results suggest that an isoscalar state can be produced from the ${\Xi }_c^{\ast }\bar{K}$ interaction with spin parity $3/2^{-}$, which can be related to state ${\Omega }_c(3120)$. And its isoscalar partner is predicted with a dominant decay in the ${\Omega }_c^{\ast }\pi$ channel. The isoscalar and isovector states with $1/2^{-}$ can be produced from the ${\Xi }_c^{\prime }\bar{K}$ interaction with a threshold close to the mass of the ${\Omega }_c(3050)$ and ${\Omega }_c(3065)$. Their couplings to the ${\Xi }_c\bar{K}$ channel are very weak, and the isovector one has strong coupling to ${\Omega }_c\pi$. High precision measurement is helpful to confirm or search such molecular states. Experimental search of states with higher masses generated from interactions ${\Xi }_c^{(\ast {,}^{\prime })}{\bar{K}}^{\ast }$ and ${\Xi }^{\ast }{D}^{(\ast )}$ are also suggested by the current results.

11 pages, 3 figures

References in corpus (12)

• Heavy Baryons in a Quark Model
• Strong LHCb evidence supporting the existence of the hidden-charm molecular pentaquarks
• Dynamical coupled-channel model of meson production reactions in the nucleon resonance region
• P-wave charmed baryons from QCD sum rules
• $P_{cs}(4459)$ and other possible molecular states from ${\Xi }_c^{(\ast )}{\bar{D}}^{(\ast )}$ and ${\Xi }_c^{\prime }{\bar{D}}^{(\ast )}$ interactions
• Interpretation of the new ${\Omega }_c^0$ states via their mass and width
• Study of the $B{\bar{B}}^{\ast }/D{\bar{D}}^{\ast }$ bound states in a Bethe-Salpeter approach
• Observation of excited ${\Omega }_c^0$ baryons in ${\Omega }_b^{-}\to {\Xi }_c^{+}{K}^{-}{\pi }^{-}$ decays
• The internal structures of the nucleon resonances $N(1875)$ and $N(2120)$
• New structure around 3250 MeV in the baryonic B decay and the $D_0^{\ast }(2400)N$ molecular hadron
• Predicting a new resonance as charmed-strange baryonic analog of $D_{s0}^{\ast }(2317)$
• 2$P$-wave charmed baryons from QCD sum rules

Cited by in corpus (5)

• Emergence of molecular-type characteristic spectrum of hidden-charm pentaquark with strangeness embodied in the $P_{\psi s}^{\Lambda }(4338)$ and $P_{cs}(4459)$
• Possible charmed-strange molecular dibaryons
• Possible molecular states from interactions of charmed baryons
• Production of open-charm pentaquark molecules in decay $B^0\to {\bar{D}}^{0}p\bar{p}$
• Kaon-induced production of strange hidden-charm molecular pentaquarks $P_{\psi s}^{\Lambda }$ from proton