The structure of pentaquarks $P_c^{+}$ in the chiral quark model

Abstract

The recent experimental results of LHCb collaboration suggested the existence of pentaquark states with charmonium. To understand the structure of the states, a dynamical calculation of 5-quark systems with quantum numbers $I{J}^P=\frac{1}{2}(\frac{1}{2}{)}^{\pm }$, $\frac{1}{2}(\frac{3}{2}{)}^{\pm }$ and $\frac{1}{2}(\frac{5}{2}{)}^{\pm }$ is performed in the framework of chiral quark model with the help of gaussian expansion method. The results show that the negative parity states can be bound states while all of the positive parity states are the scattering states. The $P_c(4380)$ state is suggested to be the bound state of ${\Sigma }_c^{\ast }D$. Although the energy of ${\Sigma }_c{D}^{\ast }$ is very close to the mass of $P_c(4450)$, the inconsistent parity prevents the assignment. The calculated distances between quarks confirm the molecular nature of the states. Other five-quark bound states of the combination of ${\Sigma }_{c}D$ and ${\Sigma }_c^{\ast }{D}^{\ast }$ are also found in the region about 4.3GeV and 4.5GeV.

6 pages, 1 figure

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Cited by in corpus (51)

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• Doubly-heavy tetraquarks
• Remarks on the $P_c$ structures and triangle singularities
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• Nucleon Resonances with Hidden Charm in $\gamma p$ reactions
• Exotic resonances of fully-heavy tetraquarks in a lattice-QCD insipired quark model
• The S- and P-wave low-lying baryons in the chiral quark model
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• Investigating the hidden-charm and hidden-bottom pentaquark resonances in scattering process
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• Strong Decay of $P_c(4380)$ Pentaquark in a Molecular Picture
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• Electromagnetic multipole moments of the $P_c^{+}(4380)$ pentaquark in light-cone QCD
• $QQ\bar{s}\bar{s}$ tetraquarks in the chiral quark model
• Heavy Flavour Physics and CP Violation at LHCb: a Ten-Year Review
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• Analysis of the hidden-charm pentaquark states based on magnetic moment and transition magnetic moment
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• Towards the discovery of novel $B_c$ states: radiative and hadronic transitions
• Possible Molecular Pentaquark States with Different Spin and Quark Configurations
• The low-lying hidden- and double-charm tetraquark states in a constituent quark model with Instanton-induced Interaction
• Resonances in heavy meson - heavy baryon coupled-channel interactions
• Phenomenological predictions for pentaquark masses from fits to baryon masses
• Masses and magnetic moments of exotic fully heavy pentaquarks
• Exotic pentaquark states with the $qqQQ\bar{Q}$ configuration
• Hidden charm pentaquark and $\Lambda (1405)$ in the ${\Lambda }_b^0\to {\eta }_c{K}^{-}p(\pi \Sigma )$ reaction
• Bottomonium-like tetraquarks in a chiral quark model
• Study of $qqq\bar{q}Q$ pentaquark system in the Chiral Quark Model
• Heptaquarks with two heavy antiquarks in a simple chromomagnetic model
• Mass and decay width of $T_{ccs}$ from symmetries
• Investigate the pentaquark resonance in the $NK$ system
• Exotic Heavy Hadrons
• The study of doubly charmed pentaquark $cc\bar{q}qq$ with the SU(3) symmetry
• Pentaquark states with hidden charm
• A search for $B_{s0}^{\ast }$ and $B_{s1}^{\ast }$ through the $K^{-}p$ interaction
• Electromagnetic couplings of pentaquarks