Decay behaviors of possible ${\Lambda }_{c\bar{c}}$ states in hadronic molecule pictures

Abstract

In 2010, ${\Lambda }_{c\bar{c}}^{\ast }$ states were predicted as the strange number $S=-1$ partners of $N_{c\bar{c}}^{\ast }$, which are well known now as the $P_c$ states and observed experimentally by LHCb Collaboration. We analyze the decay behaviors of ${\Lambda }_{c\bar{c}}$ as S-wave hadronic molecules within the effective Lagrangian framework by a similar method, which has been applied on $P_c$ states successfully. With partial widths of possible decay channels calculated, we find that ${\Lambda }_{c\bar{c}}(4213)$ and ${\Lambda }_{c\bar{c}}(4403)$, which are formed as pseudoscalar meson baryon molecules, mainly decay to the ${\eta }_c\Lambda$ channel. For the two vector meson baryon molecule states, our results show that the total decay width with $J^P={\frac{1}{2}}^{-}$ is by one order of magnitude larger than that with $J^P={\frac{3}{2}}^{-}$. The decay patterns and relative decay ratios are very different for ${\Lambda }_{c\bar{c}}(4370)$ being a $D_s^{\ast -}{\Lambda }_c^{+}$ or ${\bar{D}}^{\ast }{\Xi }_c$ molecule state. The main decay channels of ${\Lambda }_{c\bar{c}}(4550)$ are ${\bar{D}}^{(\ast )}{\Xi }_c^{(\ast ,\prime )}$ because of the pseudoscalar meson exchange mechanism. In addition, ${\bar{D}}^{\ast }{\Xi }_c$ is the dominant decay channel of ${\Lambda }_{c\bar{c}}(4490)$ which is assumed as a $\bar{D}{\Xi }_c^{\ast }$ bound state. These decay patterns of the ${\Lambda }_{c\bar{c}}^{\ast }$ states would provide a guidance for their future experimental searches and help us to understand their internal structures.

References in corpus (74)

• Hadronic molecules
• The hidden-charm pentaquark and tetraquark states
• Observation of $J/\psi p$ resonances consistent with pentaquark states in ${\Lambda }_b^0\to J/\psi K^{-}p$ decays
• Pentaquark and Tetraquark states
• Observation of a narrow pentaquark state, $P_c(4312{)}^{+}$, and of two-peak structure of the $P_c(4450{)}^{+}$
• Prediction of narrow $N^{\ast }$ and ${\Lambda }^{\ast }$ resonances with hidden charm above 4 GeV
• Evidence that the a0(980) and f0(980) are not elementary particles
• Identifying exotic hidden-charm pentaquarks
• How to reveal the exotic nature of the P_c(4450)
• Dynamically generated $N^{\ast }$ and ${\Lambda }^{\ast }$ resonances in the hidden charm sector around 4.3 GeV
• Towards exotic hidden-charm pentaquarks in QCD
• The Pentaquark Candidates in the Dynamical Diquark Picture
• Emergence of a complete heavy-quark spin symmetry multiplet: seven molecular pentaquarks in light of the latest LHCb analysis
• The possible hidden-charm molecular baryons composed of anti-charmed meson and charmed baryon
• Understanding the newly observed heavy pentaquark candidates
• Strong LHCb evidence supporting the existence of the hidden-charm molecular pentaquarks
• $\bar{D}{\Sigma }_c^{\ast }$ and ${\bar{D}}^{\ast }{\Sigma }_c$ interactions and the LHCb hidden-charmed pentaquarks
• Combining heavy quark spin and local hidden gauge symmetries in the dynamical generation of hidden charm baryons
• Coupled-channel study of crypto-exotic baryons with charm
• Analysis of the $P_c(4380)$ and $P_c(4450)$ as pentaquark states in the diquark model with QCD sum rules
• Sigma_c Dbar and Lambda_c Dbar states in a chiral quark model
• Coupled-channel dynamics in the reactions piN --> piN, etaN, KLambda, KSigma
• The ρρinteraction in the hidden gauge formalism and the f_0(1370) and f_2(1270) resonances
• Study of $P_c(4457)$, $P_c(4440)$, and $P_c(4312)$ in a quasipotential Bethe-Salpeter equation approach
• A Discussion on Triangle Singularities in the ${\Lambda }_b\to J/\psi K^{-}p$ Reaction
• Phenomenology of $P_c(4380{)}^{+}$, $P_c(4450{)}^{+}$ and related states
• Pentaquark states in a diquark-triquark model
• Exploring the molecular scenario of $P_c(4312)$, $P_c(4440)$, and $P_c(4457)$
• Nucleon Resonances with Hidden Charm in Coupled-Channel Models
• Effect of charmed meson loops on charmonium transitions
• Anatomy of the newly observed hidden-charm pentaquark states: $P_c(4312)$, $P_c(4440)$ and $P_c(4457)$
• Isospin breaking decays as a diagnosis of the hadronic molecular structure of the $P_c(4457)$
• Interpretation of the Narrow $J/\psi p$ Peaks in ${\Lambda }_b\to J/\psi p{K}^{-}$ Decay in the Compact Diquark Model
• Study of $qqqc\bar{c}$ five quark system with three kinds of quark-quark hyperfine interaction
• Evidence that the Y(4660) is a f_0(980)psi' bound state
• Some Predictions of Diquark Model for Hidden Charm Pentaquark Discovered at the LHCb
• Possible pentaquarks with heavy quarks
• Hidden charm N and Delta resonances with heavy-quark symmetry
• Looking for a hidden-charm pentaquark state with strangeness $S=-1$ from ${\Xi }_b^{-}$ decay into $J/\psi K^{-}\Lambda$
• Strong two-body decays of the Lambdac(2940)+ in a hadronic molecule picture
• Baryon states with hidden charm in the extended local hidden gauge approach
• Remarks on the $P_c$ structures and triangle singularities
• Interaction of vector mesons with baryons and nuclei
• Covariant L-S Scheme for the effective N*NM couplings
• Possible strange hidden-charm pentaquarks from ${\Sigma }_c^{(\ast )}{\bar{D}}_s^{\ast }$ and ${\Xi }_c^{{(}^{\prime },\ast )}{\bar{D}}^{\ast }$ interactions
• Charmonium absorption cross section by nucleon
• The ${\Lambda }_b\to J/\psi K^0\Lambda$ reaction and a hidden-charm pentaquark state with strangeness
• The structure of pentaquarks $P_c^{+}$ in the chiral quark model
• Strong decay mode $J/\psi p$ of hidden charm pentaquark states $P_c^{+}(4380)$ and $P_c^{+}(4450)$ in ${\Sigma }_c{\bar{D}}^{\ast }$ molecular scenario
• Coupled channel analysis of molecule picture of $P_c(4380)$
• Hidden-charm and bottom meson-baryon molecules coupled with five-quark states
• Decay behaviors of Pc hadronic molecules
• Quark model estimate of hidden-charm pentaquark resonances
• A hidden-charm $S=-1$ pentaquark from the decay of ${\Lambda }_b$ into $J/\psi \eta \Lambda$
• Hidden-charm molecular pentaquarks and their charm-strange partners
• Disentangling the hadronic molecule nature of the $P_c(4380)$ pentaquark-like structure
• Hidden-charm pentaquarks as a meson-baryon molecule with coupled channels for ${\bar{D}}^{(\ast )}{\Lambda }_{\mathrm{c}}$ and ${\bar{D}}^{(\ast )}{\Sigma }_{\mathrm{c}}^{(\ast )}$
• QCD sum rule study of hidden-charm pentaquarks
• The baryo-quarkonium picture for hidden-charm and bottom pentaquarks and LHCb $P_{\mathrm{c}}(4380)$ and $P_{\mathrm{c}}(4450)$ states
• The hidden charm pentaquarks are the hidden color-octet $uud$ baryons?
• Understanding spin parity of $P_c(4450)$ and $Y(4274)$ in a hadronic molecular state picture
• Exotic triple-charm deuteron-like hexaquarks
• The radiative decays of the singly heavy baryons in chiral perturbation theory
• LHCb pentaquarks in constituent quark models
• Exploratory study of possible resonances in the heavy meson - heavy baryon coupled-channel interactions
• Decay behavior of the strange and beauty partners of $P_c$ hadronic molecules
• Heavy quark spin multiplet structure of $P_c(4312)$, $P_c(4440)$, and $P_c(4457)$
• Strong decay patterns of the hidden-charm pentaquark states $P_c(4380)$ and $P_c(4450)$
• Looking for the hidden-charm pentaquark resonances in $J/\psi p$ scattering
• On the hidden charm pentaquark-s in ${\Lambda }_b\to J/\psi K^{-}p$ decay
• Revisiting hidden-charm pentaquarks from QCD sum rules
• Flavor-singlet charm pentaquark
• Decays of Pentaquarks in Hadrocharmonium and Molecular Pictures
• $J/\psi N$ interactions revisited and ${\Lambda }_b^0\to J/\psi K^{-}({\pi }^{-})p$ decays

Cited by in corpus (28)

• An updated review of the new hadron states
• Evidence of a $J/\psi \Lambda$ structure and observation of excited ${\Xi }^{-}$ states in the ${\Xi }_b^{-}\to J/\psi \Lambda K^{-}$ decay
• Chiral perturbation theory for heavy hadrons and chiral effective field theory for heavy hadronic molecules
• Prediction of hidden charm strange molecular baryon states with heavy quark spin symmetry
• Systematics of the heavy flavor hadronic molecules
• The $P_{cs}(4459)$ pentaquark from a combined effective field theory and phenomenological perspective
• Novel coupled channel framework connecting quark model and lattice QCD: an investigation on near-threshold $D_s$ states
• Molecular nature of $P_{cs}(4459)$ and its heavy quark spin partners
• Can discovery of hidden charm strange pentaquark states help determine the spins of $P_c(4440)$ and $P_c(4457)$?
• Magnetic moments and transition magnetic moments of $P_c$ and $P_{cs}$ states
• Strong decays of the newly $P_{cs}(4459)$ as a strange hidden-charm ${\Xi }_c{\bar{D}}^{\ast }$ molecule
• Investigation of magnetic moment of $P_{cs}(4338)$ and $P_{cs}(4459)$ pentaquark states
• Production of $P_{cs}(4459)$ from ${\Xi }_b$ decay
• New strange pentaquarks
• The double thresholds distort the lineshapes of the $P_{\psi s}^{\Lambda }(4338{)}^0$ resonance
• Hidden-charm pentaquarks with triple strangeness due to the ${\Omega }_c^{(\ast )}{\bar{D}}_s^{(\ast )}$ interactions
• Hidden charm pentaquarks with color-octet substructure in QCD Sum Rules
• Pole determination of $P_{\psi s}^{\Lambda }(4338)$ and possible $P_{\psi s}^{\Lambda }(4255)$ in $B^{-}\to J/\psi \Lambda \bar{p}$
• Spin-parities of the $P_c(4440)$ and $P_c(4457)$ in the One-Boson-Exchange Model
• Spectrum of the doubly charmed molecular pentaquarks in chiral effective field theory
• Newly observed $X(4630)$: a new charmoniumlike molecule
• $P_{\psi s}^{\Lambda }(4459)$ and $P_{\psi s}^{\Lambda }(4338)$ as molecular states in $J/\psi \Lambda$ invariant mass spectra
• Exotic Hadrons at LHCb
• The investigations of the $P$-wave $B_s$ states combining quark model and lattice QCD in the coupled channel framework
• Towards modeling the short-range interactions of hidden/open charm pentaquark molecular states
• Insights into the nature of the $P_{cs}(4459)$
• Study of the hidden charm pentaquarks ${\Lambda }_{c\bar{c}}$ above $4$ GeV
• Exotic Heavy Hadrons