Hidden-charm pentaquarks and $P_c$ states

Abstract

Recently, the LHCb Collaboration reported three $P_c$ states in the $J/\psi p$ channel. We systematically study the mass spectrum of the hidden charm pentaquark in the framework of an extended chromomagnetic model. For the $nnnc\bar{c}$ pentaquark with $I=1/2$, we find that (i) the lowest state is $P_c(4327.0,1/2,1/2^{-})$ [We use $P_c(m,I,J^P)$ to denote the $nnnc\bar{c}$ pentaquark], which corresponds to the $P_c(4312)$. Its dominant decay mode is ${\Lambda }_c{\bar{D}}^{\ast }$. (ii) We find two states in the vicinity of $P_c(4380)$. The first one is $P_c(4367.4,1/2,3/2^{-})$ and decays dominantly to $NJ/\psi$ and ${\Lambda }_c{\bar{D}}^{\ast }$. The other one is $P_c(4372.4,1/2,1/2^{-})$. Its dominant decay mode is ${\Lambda }_c\bar{D}$, and its partial decay width of $N{\eta }_c$ channel is comparable to that of $NJ/\psi$. (iii) In higher mass region, we find $P_c(4476.3,1/2,3/2^{-})$ and $P_c(4480.9,1/2,1/2^{-})$, which correspond to $P_c(4440)$ and $P_c(4457)$. In the open charm channels, both of them decay dominantly to the ${\Lambda }_c{\bar{D}}^{\ast }$. (iv) We predict two states above $4.5\text{GeV}$, namely $P_c(4524.5,1/2,3/2^{-})$ and $P_c(4546.0,1/2,5/2^{-})$. The masses of the $nnnc\bar{c}$ state with $I=3/2$ are all over $4.6\text{GeV}$. Moreover, we use the model to explore the $nnsc\bar{c}$, $ssnc\bar{c}$ and $sssc\bar{c}$ pentaquark states.

arXiv comment18 pages, 4 figure; revised version accepted by PRD

References in corpus (52)

• Observation of a narrow charmonium-like state in exclusive B+ -> K+ pi+pi- J/psi decays
• Observation of a New Narrow Charmonium State in Exclusive B+-->K+ pi+pi- J/psi Decays
• 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
• Multiquark Resonances
• Pentaquark and Tetraquark states
• Heavy-Quark QCD Exotica
• Observation of a Broad Structure in the ${\pi }^{+}{\pi }^{-}J/\psi$ Mass Spectrum around 4.26 GeV/$c^2$
• Observation of a narrow pentaquark state, $P_c(4312{)}^{+}$, and of two-peak structure of the $P_c(4450{)}^{+}$
• Observation of the Narrow State $X(3872)\to J/\psi {\pi }^{+}{\pi }^{-}$ in $\bar{p}p$ Collisions at $\sqrt{s}=1.96 \TeV$
• Exotics: Heavy Pentaquarks and Tetraquarks
• Observation and Properties of the X(3872) Decaying to J/psi pi+ pi- in p-p(bar) Collisions at sqrt(s) = 1.96 TeV
• Observation of the doubly charmed baryon ${\Xi }_{cc}^{++}$
• Study of the B- --> J/psi K- pi+ pi- Decay and Measurement of the B- --> X(3872) K- Branching Fraction
• Short Range Structure in the X(3872)
• Observation of Two Resonant Structures in e+e- to pi+ pi- psi(2S) via Initial State Radiation at Belle
• Observation of a near-threshold omega-J/psi mass enhancement in exclusive B-->K omega J/psi decays
• Evidence for a Narrow Near-Threshold Structure in the $J/\psi \varphi$ Mass Spectrum in $B^{+}\to J/\psi \varphi K^{+}$ Decays
• Identifying exotic hidden-charm pentaquarks
• Evidence of a Broad Structure at an Invariant Mass of 4.32 GeV/$c^2$ in the Reaction $e^{+}{e}^{-}\to {\pi }^{+}{\pi }^{-}\psi (2S)$ Measured at BaBar
• The New Pentaquarks in the Diquark Model
• 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
• Strong LHCb evidence supporting the existence of the hidden-charm molecular pentaquarks
• Observation of $e^{+}{e}^{-}\to \gamma X(3872)$ at BESIII
• Analysis of the $P_c(4380)$ and $P_c(4450)$ as pentaquark states in the diquark model with QCD sum rules
• The Possible Interpretations of Y(4260)
• Study of $P_c(4457)$, $P_c(4440)$, and $P_c(4312)$ in a quasipotential Bethe-Salpeter equation approach
• $QQ\bar{Q}\bar{Q}$ states: masses, production, and decays
• Observation of X(3872) production in pp collisions at sqrt(s)= 7 TeV
• Pentaquark states in a diquark-triquark model
• Measurement of the X(3872) production cross section via decays to J/psi pi pi in pp collisions at sqrt(s) = 7 TeV
• 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
• Possible pentaquarks with heavy quarks
• Compact pentaquark structures
• Is pentaquark doublet a hadronic molecule?
• Analysis of $P_c^{+}(4380)$ and $P_c^{+}(4450)$ as pentaquark states in the molecular picture with QCD sum rules
• A chromomagnetic mechanism for the X(3872) resonance
• Hybridized Tetraquarks
• Hidden-charm molecular pentaquarks and their charm-strange partners
• Masses of doubly heavy-quark baryons in an extended chromomagnetic model
• Chromomagnetism, flavour symmetry breaking and S-wave tetraquarks
• QCD sum rule study of hidden-charm pentaquarks
• Hidden-charm pentaquarks and their hidden-bottom and $B_c$-like partner states
• Hidden-Charm Tetraquarks and Charged Zc States
• Color spin wave functions of heavy tetraquark states
• Stable heavy pentaquarks in constituent models
• Isovector and hidden-beauty partners of the X(3872)
• The $J^P=1^{+}$ $ud\bar{s}\bar{s}$ Tetraquark

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• Radiative decay and axial-vector decay behaviors of octet pentaquark states
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