$P_c(4457)$ interpreted as a $J^P=1/2^{+}$ state by ${\bar{D}}^0{\Lambda }_c^{+}(2595)$-${\pi }^0{P}_c(4312)$ interaction

Abstract

$P_c(4457)$ has been discovered over five years, but the parity of this particle remains undetermined. In this letter we propose a new interpretation for $P_c(4457)$, which is the state generated from the coupled-channel ${\bar{D}}^0{\Lambda }_c^{+}(2595)$ and ${\pi }^0{P}_c(4312)$ since they can exchange an almost on-shell ${\Sigma }_c^{+}$. In this scenario, the parity of $P_c(4457)$ will be positive, which is different from the candidate of the bound state of ${\bar{D}}^{\ast }{\Sigma }_c$. The main decay channel of $P_c(4457)$ in this model is $P_c(4312)\pi$. We propose three processes ${\Lambda }_b^0\to J/\psi K_{s}p{\pi }^{-}$, ${\Lambda }_b^0\to J/\psi K^{-}p{\pi }^0$, and ${\Lambda }_b^0\to J/\psi p{\pi }^{-}{\pi }^{+}{K}^{-}$ to verify $P_c(4457)\to P_c(4312)\pi$.

arXiv comment7 Pages, 2 figures

References in corpus (42)

• 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
• The $XYZ$ states: experimental and theoretical status and perspectives
• Multiquark Resonances
• Non-Standard Heavy Mesons and Baryons, an Experimental Review
• Pentaquark and Tetraquark states
• Heavy-Quark QCD Exotica
• Observation of a narrow pentaquark state, $P_c(4312{)}^{+}$, and of two-peak structure of the $P_c(4450{)}^{+}$
• An updated review of the new hadron states
• Exotics: Heavy Pentaquarks and Tetraquarks
• 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
• A review of the open charm and open bottom systems
• Exotic Hadrons with Heavy Flavors -X, Y, Z and Related States-
• New Exotic Meson and Baryon Resonances from Doubly-Heavy Hadronic Molecules
• Threshold cusps and triangle singularities in hadronic reactions
• Dynamically generated $N^{\ast }$ and ${\Lambda }^{\ast }$ resonances in the hidden charm sector around 4.3 GeV
• Multiquark States
• The possible hidden-charm molecular baryons composed of anti-charmed meson and charmed baryon
• Combining heavy quark spin and local hidden gauge symmetries in the dynamical generation of hidden charm baryons
• Sigma_c Dbar and Lambda_c Dbar states in a chiral quark model
• Model-independent evidence for $J/\psi p$ contributions to ${\Lambda }_b^0\to J/\psi p{K}^{-}$ decays
• Nucleon Resonances with Hidden Charm in Coupled-Channel Models
• Evidence for exotic hadron contributions to ${\Lambda }_b^0\to J/\psi p{\pi }^{-}$ decays
• Diquark Correlations in Hadron Physics: Origin, Impact and Evidence
• Explaining the Many Threshold Structures in the Heavy-Quark Hadron Spectrum
• Study of $qqqc\bar{c}$ five quark system with three kinds of quark-quark hyperfine interaction
• Evidence for a new structure in the $J/\psi p$ and $J/\psi \bar{p}$ systems in $B_s^0\to J/\psi p\bar{p}$ decays
• Study of the production of ${\Lambda }_b^0$ and ${\overline{B}}^0$ hadrons in $pp$ collisions and first measurement of the ${\Lambda }_b^0\to J/\psi p{K}^{-}$ branching fraction
• Molecular Interpretation of the $P_c(4440)$ and $P_c(4457)$ States
• Hidden charm N and Delta resonances with heavy-quark symmetry
• The XYZ states revisited
• Analysis of $P_c^{+}(4380)$ and $P_c^{+}(4450)$ as pentaquark states in the molecular picture with QCD sum rules
• Baryon states with hidden charm in the extended local hidden gauge approach
• A Review on Partial-wave Dynamics with Chiral Effective Field Theory and Dispersion Relation
• Decay behaviors of Pc hadronic molecules
• Coupled-channel effects of the ${\Sigma }_c^{(\ast )}{\bar{D}}^{(\ast )}$-${\Lambda }_c(2595)\bar{D}$ system and molecular nature of the $P_c$ pentaquark states from one-boson exchange model
• LHCb pentaquarks in constituent quark models
• Scale Invariance in Heavy Hadron Molecules
• On the hidden charm pentaquark-s in ${\Lambda }_b\to J/\psi K^{-}p$ decay
• Hadronic molecules for charmed and bottom baryons near thresholds

Cited by in corpus (2)

• Decay behavior of hidden-strange hadronic molecular state $N(2270)$
• Low-energy $N\varphi$ scattering from a pole-enhanced triangle diagram